Angular contact ball bearings Jixiang heart Thrust Ball Bearings

Angular contact ball roller bearing manufacturer Jixiang heart Thrust Ball Bearings , as can be loaded more of the ball, the radial load carrying capacity greater than the ordinary ball bearings , can withstand large axial load or bear the pure axial load, which allows work speed and bearing deep groove ball bearing similarities more rigid , but requires precise installation for misalignment error is very sensitive, it is generally not used alone to bear radial load , radial load while at the same time will bring additional axes to the load . This variant bearing many varieties of applications is very broad, often made with 15 °, 25 ° and 40 ° contact angle of three kinds of series, the greater the contact angle , the higher the axial load capacity , but should be used at high speed small roller bearing suppliers contact angle is appropriate.
Most of these bearings in pairs for a small span rigid double precision spindle bearing axis or , when used to carefully adjust the clearance, change the bearing inner and outer axial distance , you can adjust the bearing internal clearance , while the several sets of bearings installed in parallel and give some preloaded amount , can improve the rigidity of the bearing system .
This type of single bearings can withstand axial load in one direction , while others need to be configured in order to offset the additional axial bearing force when it is made on the installation of additional axial force which cancel each other out , and can withstand up two forces axial load , and has two strong axial direction limit ability to be installed in pairs generally use two sets of bearing outer race wide face with its relative ( back to back ) or a relatively narrow end ( face to face ) two installation forms , where rigid bearing system mounted back to back best . For ease of installation in pairs or groups , some bearing factory supply in pairs, a group of three and four sets of a group such as bearings, bearing the same batch so that the supply of processing consistency, use bear the load more evenly , additional axial forces cancel each other more thoroughly .
This type of bearing and non- separable non-ionic type two, the separation of bearings for restricted installation conditions , requirements from the entire outer or inner ring bearings were installed in order to remove the case , since the separation of angular contact ball bearings are widely used in magnetic motor , it is also known as magneto bearings. This type of bearing on the inner ring in the locking variety, can be adapted to higher speeds .

Here is NSK NSK bearings distributor in China in the global video conference that

Here is NSK NSK bearings distributor in China in the global video conference that, NSK Europe Division in 1998 and the PSA Group group cooperation, mainly for PSA Group and NSK NSK Bearing slim bearings  NSK solutions for powertrain and chassis, over the years, NSK and the PSA Group has always been a close cooperation, and hit a six-year PPM (to ensure product qualification rate reached an average height of a level of quality management methods) O record, won the PSA Group's "Global quality Award." PSA Group Vice President, Mr. Jean-Christophe Quémard the NSK won the "Global Quality Award" talked about: "NSK as our parts suppliers to provide us with NSK products and solutions to ensure that our energy efficient environmentally friendly cars, and whether it is NSK's product quality performance or R & D capabilities, have reached an excellent water products. "NSK Europe Marketing Director Ralf Duning President in this get PSA Group "Global Quality Award", said: We want to constantly improve our production processes cross bearing and innovative ideas, so as to ensure that we "MOTION & CONTROL" (Operation and Control) of the technology world lead, provide a variety of human life and on the global energy conservation movement and contribute to resource protection.About the PSA Group: PSA Peugeot Citroen PSA Group is a group, in 1976 merged Peugeot and Citroen PSA Peugeot Citroen Group, 2006 PSA Group global sales 3,366,000 units, the global market share of 5.2%. PSA Group, as Europe's second largest car manufacturer, PSA Group in the European market continues to increase sales outside (especially in Latin America and China), total sales of 1.069 million units, accounting for 32% of the Group's total sales.

Has 20 years of history, Since 1987 began

NTN Corporation (hereafter, NTN) will provide specially designed bearings for the Institute of the University to participate in the "World Solar Challenge" international solar car cross bearing  race was held in Australia in October this year. NTN interaction with  the Institute of the University College of Engineering increased by Mechanical Engineering Tribology workshop, and the development of the motor shaft and bearings as a student, "Institute of the University of automatic" support for the activities section, will participate in the first challenge. World Solar Challenge "is one of the largest solar car race in the world, participants race over 3021 km, through the Australian desert between Darwin and Adelaide, using the sun as the only power source. Has 20 years of history, Since 1987 began, the race attracts participants from around the world, including many spherical roller bearing  universities and businesses. Institute's goal is to win in the game the first time on the podium. Solar car electric car, the sun's energy into electrical energy drive motor and steering tires. With minimal power dissipation structure design requires long-distance driving using only electric power obtained from solar cells. Deep groove ball bearings NTN challenges provided by the JIS 5 magnitude, which is higher than the general JIS 0 级 two levels to help improve machining accuracy. Ceramic balls has changed ball rolling contact surface curvature is optimized to reduce the contact area and achieve a lower torque, while stirring resistance with minimal low-viscosity grease has been used. This helps to reduce 50% of the torque compared to conventional products. Gangdun has been changed to non-contact rubber seals to improve driving through the desert to prepare to resist the penetration of foreign substances. In addition to wheel motors, NTN bearings used in the drive wheel shaft rotational torque reduction. This helps to achieve high speed with minimum power consumption, but also contribute to long-distance driving.

The main target market is industrial machinery

SKF lubrication systems Lincoln Industrial new members
??????SKF China distributor in Sweden SKF Group global video conference that, SKF lubrication systems to expand the U.S. aftermarket and increased SKF company in North America and Asian markets and enhance market coverage SKF's production capacity, and determine its lubrication system increase in membership - Lincoln Industrial.
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???????SKF bearings distributor in China, according to introduction, SKF Group will be $ 1 billion cash acquisition is headquartered in St. Louis, Missouri, United States Lincoln Industrial lubrication system manufacturers, this new member of SKF lubrication systems Lincoln Industrial, the current SKF lubrication existing business has a high complementary value in the market area with SKF, technology development and production at the coincidence is very limited, especially in North America and Asia.

??????The increase SKF include Lincoln (Lincoln), Arnie Mitt (Alemite) and Rui Technology (Reelcraft) all business entities and brands. SKF Company believes that the acquisition is completed to bring more and better sales channels and better operating efficiency, the company gained a great synergy. The acquisition will be high speed bearings per share thickening of the company, the acquisition using the company's existing cash and credit tools. In addition, Lincoln also enable industry to get into the North American SKF lubrication tools and equipment aftermarket better channels.SKF China Office news that Lincoln Industrial currently has nearly 2,000 employees and 2010 revenues expected to sell $ 400 million, operating margin close to 24%. Lincoln Industrial is a world-class lubrication systems, lubrication tools and equipment supplier, has a consistently strong financial performance. Lincoln Industrial's three main product lines for the automatic lubrication system, reels and grease gun, focus on lubricating products. Sales come from the automatic lubrication systems and related thin section ball bearings. The main target market is industrial machinery, energy, machinery, engineering machinery, mining machinery, agricultural machinery and steel.
"We are very pleased that SKF acquired us, and look forward to the development of the SKF Group to make its own contribution to the development of Lincoln Industrial over the years are very good, strong growth, financial stability. Lincoln Industrial and existing SKF lubrication systems business and customer groups The combination will provide significant growth opportunities for the company to create greater value. "Lincoln Industrial, Chairman and CEO, Mr. Bart A Aitken SKF acquisition of new members in the Lincoln Industrial talked about.

A circular truncated cone

Roller Roller bearing is cylindrical, conical or drum-shaped roller for rolling element bearing. Roller bearings are mainly radial cylindrical roller, double row spherical roller, tapered roller and thrust roller and structure type.
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Roller Bearings

Cylindrical roller bearings
Such roller is mainly used for cylindrical roller bearings, roller assemblies can also be used directly for machinery. This class roller has been standardized in size, can be used as commodities roller for design and user choice. [1]
Long cylindrical roller bearings
This class roller shaft divided in two with and without shaft, mainly for long cylindrical roller bearings, roller assemblies can also be used directly for machinery.
Needle roller bearings
Such is mainly used for needle roller bearings, needle bearing universal joints and thrust needle roller bearings, needle roller assembly can also be used directly for machinery. This class roller has been serialized in size for the design choices. Bearing structure according to the needs of both ends of the needle shape of cone-shaped head, flat head shape, round shape.
Tapered Roller Bearings
A circular truncated cone, the cone angle is typically 1 ° ~ 4 ° 20 ', is also less than 1 ° or greater than 4 ° 20', mostly 2 °. Roller length is generally not more than twice the diameter of the large end rollers. Such rollers are used for tapered roller bearings, roller large cone angle is basically used for thrust tapered roller bearings.
Spherical roller bearings
Roller raceway spherical shape. With this roller thin section ball bearings with self-aligning properties, can withstand large loads. Spherical roller of asymmetric and symmetric shape, generally large end asymmetrical spherical, symmetrical both end faces of the flat face. Symmetrical spherical roller better performance, rather than the symmetrical form for elimination. Such roller for spherical roller bearings and spherical roller thrust bearings.
Spiral roller bearings
It is a special section of the hollow roll made steel rollers, two kinds of left and right hand. The roller application is not very extensive, mainly used by the impact load spiral roller bearings.
Pillar hole roller bearings
Roller central pillar holes band-pass hole that used to hold pillar to pillar cage fixed to the sheet. This class roller shape cylindrical, conical, spherical shape, mainly for large bearings.

SKF delegation once again visit Henan University of Technology

 Henan SKF Special bearings sales center there is news that today one of the world's largest bearing company - SKF Group , recently sent a delegation to visit again , Henan University of Technology ( HKUST referred River ), SKF delegation and the river HKUST the leadership of Mechanical Engineering on personnel training, joint bearing basic technology research and academic exchanges , and business products and technology demonstrations and other issues were widely discussed and reached consensus on a number of intentions and . We follow Henan SKF bearings distributor SKF Group sales center to find access to Henan University of Technology on angular bearing of the whole process .Henan University of Technology is located in the historical and cultural city , the modern industrial and tourist city of Luoyang . Last December , SKF delegation paid a visit to Henan University of Technology , the SKF Group re-visit the river HKUST delegation SKF Group Human Resources Director Asia and Ms. Tina Jiang SKF Bearing China Ltd. , Henan tribology and lubrication experts University professor Dr. George TYWan line of five people . SKF Group Asia Director of Human Resources Ms. Tina Jiang introduced the SKF Group and the Chinese company's organizational structure, management philosophy, corporate culture and human resource development . And listen to the river HKUST College of Mechanical and Electrical Engineering , bearing professional personnel training and the introduction of basic scientific research . The two sides exchange visits of experts to give lectures , scientific and academic cooperation , personnel training and other aspects to achieve cooperation and consensus.

Timken China: Timken thermal power industry success stories

TIMKEN bearing manufacturers thermal power industry in the section we describe the application of thermal power industry with a lot of Timken bearings. But perhaps someone will doubt that these may not be used in thermal power industry is the Timken bearings ah, in order to help you eliminate this doubt, we are going to use some thermal power TIMKEN Chinese success stories to prove. Timken company has with many years of application experience and a full range of production-quality Timken thin bearings, worldwide power equipment manufacturers and users to provide a quality Timken bearings and effective solutions in some of China's thermal power industry is important customers are Shanghai Boiler Factory Co. company, Shanghai heavy Machinery Plant Co., a large power plant TIMKEN bearings directly from the Shanghai Branch will provide Timken bearings and services, but also to serve China Datang Corporation, China Datang Corporation and other large power generation enterprise group specially set up in Hunan imken Hunan Electric bearing Company and for the sound development of China's energy industry and unlimited operation provides a reliable protection. This is also an aspect of practice from the Timken Company is committed to the development of the Chinese term commitment. Timken Timken in China is only part of the market, Foster Wheeler USA Corporation, the world's leading power equipment suppliers. Timken's friction with advanced management solutions, reliable Timken products and sincere service, a long time for Foster Wheeler company provides TIMKEN bearing products and services. Timken Company and the city of Florida Indian Pacific Gas / Electric Company engineers, in just one month to study and developed a solution grinder serious bearing damage solutions, with the "anti-wear grain steel "manufacturing tapered / cylindrical roller bearing assembly to replace the original spherical / cylindrical roller bearing construction. The new design uses the original bearing timken bearing housing, life beyond the original design life of five times for customers to save funds totaling more than $ 300,000, directly reduce the company's costs.

NSK won the 60th JSAE outstanding scientific paper award

 05.20, in Yokohama, Kanagawa Prefecture, Japan held JSAE outstanding scientific paper award ceremony, the Japanese Society of Automotive Engineers (referred JSAE) in recognition of NSK in CVT, improved fuel efficiency of technical papers contribution awarded to the first 60 NSK JSAE paper Award for outstanding scientific sessions. We follow NSK Special bearings distributor in China to understand NSK won the 60th JSAE outstanding scientific paper award. JSAE Paper Award for outstanding scientific .1951 by the Japan Society of Automotive Engineers was founded in order to enhance achievements in the field of automotive. NSK to the "temperature on the toroidal CVT transmission analysis" as the theme of the paper better articulated and demonstrated NSK CVT transmissions to improve fuel efficiency point of view, therefore, the solution NSK won JSAE outstanding scientific paper award.With the rising fuel efficiency of cars on demand, there is a greater transmission efficiency of large-scale motor vehicle continuously variable transmission and a corresponding needs. NSK to the "temperature on the toroidal CVT transmission analysis" as the theme of the paper, the purpose is to help in the calculation and verification of the proposed increase in temperature toroidal CVT transmission with a standard formula for empirical data to help predict toroidal CVT gearbox transmission efficiency more accurately in further improve vehicle fuel efficiency measures thesis literature. And NSK Pacific Convention Center in Yokohama, Japan on May 19 to 21 on the Automotive Double roller bearing Exposition held detailing the toroidal CVT transmission, highlighting NSK transmission technologies to improve fuel efficiency. NSK won the 60th JSAE Paper Award is outstanding scientific NSK transmission technology research in the affirmation that we provide will enable NSK NSK Bearings more efficient products and services, as well as a product manufacturer NSK, will further reduce the realization of energy losses contribute to global sustainable development

New frequency induction heaters

Timken in 2010 International Wind Energy Conference and Exhibition unveiled products include:
    ( 1 ) New UltraWind Timken tapered roller Angular contact ball bearing , with Germanischer Lloyd (Germanischer Lloyd) certified the industry's highest rated life . This large aperture spindle bearings simplified drivetrain design , saving equipment costs ;
    ( 2 ) The new Timken? Antifriction bearings, including cylindrical roller bearings and spherical roller Ball bearing company : Compared to standard cylindrical roller bearings or spherical roller bearings, bearing this breakthrough technology will extend bearing life expectancy threefold. This new antifriction bearings can be reduced by up to 15 percent of torque, and can withstand abrasions , scratches , vibration and micro pitting corrosion and other damage ;
    ( 3 ) three new wind seal products, including : EcoTurn labyrinth , its non -contact design prevents grease leaks and contamination , ideal for Timken's low-pressure lubrication system ; Elastomer wind seal , in the design of the elastic sealing lip , can cope with the bearing deflection , and makes friction and minimize wear of the bearing inner ring ; , and wind seal PTFE , with excellent chemical inertness and low friction characteristics , helps to maximize product performance ;
    ( 4 ) of new wind energy equipment lubrication systems, precisely and evenly inject fresh grease lubricated bearings at the same time slot , can remove the old grease, significantly enhanced mechanical and electrical equipment performance and wind can produce . Its use is equipped with progressive or injector -based transmission -type centralized grease lubrication device ;
    ( 5 ) New frequency induction heaters , new frequency induction heaters , Timken? Clean steel , online intelligent monitoring systems , and Timken bearings company-specific Syber advanced wind energy systems analysis software performance products .

the customer's production growth in demand

Guangzhou NSK Bearings: NSK Honda presented to the "2010 Outstanding Supplier Award"December 28, NSK bearing manufacturers sales center in Guangzhou News - Guangzhou Honda Automobile, Dongfeng Honda Engine, Honda Motor (China) 3 companies in Guangzhou Baiyun International Convention and Exhibition Center jointly organized a grand 2011 Procurement Conference, to 2010 Excellent supplier awards, a total of 15 suppliers to get this award, NSK China is Honda "2010 excellent Supplier" award winner, one of the following NSK Bearings sales center in Guangzhou reported.  NSK Slim bearing distributor in China, according to reports, NSK (NSK China) Sales Co., Ltd. for the first time won the Honda three company's annual Supplier Excellence Award. Because NSK Southern Automotive Division and related auto parts production plants in terms of quality, price, delivery and other aspects of the previous year has been greatly improved, the maximum extent possible to meet the customer's production growth in demand, and thus subject to the customer's positive assessment. We know that Guangzhou Honda, Dongfeng Honda, Honda (China) 3 Corporation is China's major automobile manufacturers, the main production Accord, Odyssey, Feng Fan, Fit, Costa figure, jazz and other models, and their suppliers standard is quite stringent. Guangzhou Honda, Dongfeng Honda Honda (China) 3 companies for outstanding supplier evaluation criteria QCDDM scoring criteria. Ie Q (quality)-C (Price)-D (delivery address)-D (technical response)-S (service counter)-M (management level), etc., while NSK China supplier with three Honda has reached All out of a monthly evaluation QCDDMS excellent results, so Guangqi Honda, Dongfeng Honda, Honda (China) jointly awarded the NSK "2010 outstanding supplier Award."

NSK established a joint venture with Toshiba Corporation

  2010.10.29 NSK distributor in China editor, recently, the Japanese Special bearings, automotive products, precision machinery parts, and machinery and electronics products manufacturer Seiko Co., Ltd. (NSK LTD.) And the world's top 500 industrial, mechanical and electrical industries in Japan relatively large monopolies Toshiba joint venture company established ADTech automotive steering systems.ADTech joint venture total investment of about 500 million yen, about 60 employees, the main objective is to develop an effective integration of NSK, electronic, mechanical, and other vehicle safety technology experience and Toshiba advanced electronics and software technology automotive steering systems. NSK and Toshiba hopes that the demand of the system as the number of green vehicles increases, because, compared to hydraulic power steering, electric power steering system is more energy efficient. NSK established a joint venture with Toshiba ADTech NSK Steering Systems, the joint venture will own a 51% stake, while Toshiba will occupy a total investment of 200 million yen ($ 2,480,000 aggregate) 49% of the shares. About NSK NSK China introduce and Toshiba Corporation: Seiko Corporation of Japan (NSK LTD.) Was founded in 1916, is Japan's first domestic design and production of bearings. For decades, NSK NSK developed countless new slim bearings, to meet the needs of users around the world, and for industrial development and technological progress have made a great contribution. NSK also by virtue of its precision machining technology, continuous development of automobile parts, precision machinery components, precision products, electronic applications in the field of active diversification. Toshiba Corporation is a Japanese multinational companies. Japan's relatively large electromechanical industry monopoly. Predecessor was founded in 1875, Tanaka Seisakusho. 1893 was renamed Tokyo Shibaura Seisakusho. 1934 and Tokyo Electric Company merger, said Tokyo Shibaura Electric Company. Headquartered in Tokyo. Toshiba Corporation is closely related with the U.S. General Electric Company. The company's products very much, mainly in the heavy electrical equipment, industrial electronic equipment and electronic components, consumer electronics and other products. 1970s to develop atomic energy, ocean development and space development and other industries.

it resistant to chemical agents

 We know bearings to withstand high loads, only a limited return transit movement. This will cause the bearing does not run smoothly, the noise increased, early Big ball bearing failure. Germany FAG Group To solve this problem, and launched with ELGOGLIDE sliding bearings. We follow FAG Bearing distributor look with ELGOGLIDE sliding bearing structure, characteristics and applications.FAG sliding bearing structure with ELGOGLIDE: FAG maintenance-free plain bearing with the development of a ELGES 0.5 mm thick, highly wear-resistant sliding layer ELGOGLIDE. And this is made of PTFE fibers ELGOGLIDE (PTFE) is made to be embedded in synthetic resin coating and bonding with the bearing outer diameter corresponding raceway is hard chrome coating. LGOGLIDE sliding layer material neither exposure to moisture expansion, it will not form a welded metal. In addition, it resistant to chemical agents, the rolling and linear motion equally suitable. Its advantage is particularly prominent in the swing motion.FAG Bearings with ELGOGLIDE sliding characteristics: ELGOGLIDE Slewing bearing at high loads and small rotation angle of application conditions with a variety of advantages. High load carrying capacity, long service life, small installation space and low friction, and all of them maintenance-free, which reduces downtime and reduce service costs. FAG is equipped with a sliding bearing applications ELGOGLIDE: ELGOGLIDE bearing the main application in a similar forklift machinery, including heavy truck applications include container spreader boom and stays in the connection and the associated hydraulic cylinder connection. Industrial forklift Typical applications include bearings and steering tie rod for adjusting the inclination mast mast lifting mechanism connections.

How to install the rear thrust bearing test

Install thrust bearing manufacturers, shaft ring and shaft should examine the vertical centerline. Method is fixed to the tank shell dial gauge face, the head of the table to touch the top of the bearing shaft rotating bearing ring raceway, while observing dial gauge pointer, if the pointer deflection, indicating ring and shaft centerline axis is not perpendicular. Tank shell hole deeper, we can still use an extension of the dial gauge head test.
Thrust bearing is installed correctly, the seat can automatically adapt to the rolling elements rolling, make sure to scroll down raceway body is located. If installed backwards, not only Double roller bearing is not working properly, and each mating surface would be subjected to severe wear. As shaft ring and seat ring and the difference is not very obvious, the assembly should be careful not to mistake. In addition, the thrust bearing race with the bearing hole should be left between 0.2-0.5mm gap to compensate for parts processing, the error caused by mounting inaccuracy, when in operation bearing ring center offset, this gap would ensure its automatic adjustment, avoid touching the friction to operate normally. Otherwise, it will cause severe damage to the bearing.

In shutdown, how to check of rolling bearings

In shutdown, how to check of rolling bearings
Periodically check the roller bearing co seal is a very important step. Optimal inspection time is arranged in a regular stop check period.
First, the importance of a clean bearings:A check is required prior to clean the surface of the machine, and then remove the bearing surrounding parts.2, the seal is very fragile parts, so need to be careful disassembly, do not use excessive force.3, then carefully check the seal and the surrounding parts, if you have shown adverse symptoms, be sure to replace the lost, poor seal will lead to bearing damage and lead to equipment downtime.Second, check the lubricant
Stained point lubricant friction between two fingers, if contaminants can feel it, or coated with a thin layer on the back of the hand lubricant and seal-ray.
Describes the importance of imports bearing lubrication and effect
Lubrication of the thin bearings, in particular, the fatigue life of the rolling bearing and friction, wear, temperature, vibration, etc. have a major impact. Without proper lubrication, the bearings will not work. Analysis to understand: Bearing causes of damage showed that about 40% of the bearing damage are related with poor lubrication. Therefore, well lubricated bearings is to reduce bearing friction and wear of effective measures.
Bearing lubrication effects can be briefly described as follows

Schaeffler UK product support engineer Derek Peasley

Schaeffler for the project provided a total of more than 300 bearings. These slewing bearing suppliers consist of fag-aligning roller bearings , mainly used for supporting both ends of the roof arch hinge radial load and thrust roller bearings for supporting the roof of the cable taut expand the axial loads. Provide maximum self-aligning roller bearings, an outer diameter of 200 mm , can withstand 300kN (30 tonnes) standard radial load , mainly used at both ends of the arch bracket hinge . Thrust roller bearings will assume approximately 600kN (60 tonnes) of the axial loads that are supported by the support structure and roofing materials arched cables produced .

        Since the bearing is completely sealed in the hinge group, not exposed to external weather conditions . In other words, Schaeffler can choose from standard products, china roller bearing, its easy to use and offers . These bearings are filled with high-quality internal grease when the roof is expanded , and in the center of the stadium at the top is closed, the top of the dome architecture designed to help building forces from wind, rain , snow pressure.

         Schaeffler UK product support engineer Derek Peasley , Mr. Tsang and Street CraneXpress company's engineers work closely together. He said: " We are very pleased with the Street CraneXpress company in this prestigious project together from the design process, we have the company's professionalism impressed , we are convinced that the selected bearing in this grim application environment, good performance . "

         In selecting suitable for installation in the fold hinge bearing rolling elements supporting the internal , the Schaeffler UK company and its customers Street CraneXpress Ltd has worked closely , the company is a mechanical processing company located in Sheffield . Street CraneXpress Ltd company responsible for the design , manufacture and installation of roof can be opened for all mechanical and electrical components .

FAG Bearings train control system application

  FAG engineers are good at innovation beyond the traditional practice . This means that challenged the traditional theory , following extraordinary way and dare to look at things with a different kind of perspective . All of these are emerging understanding of the concept of the premise. Recently , FAG bearings distributor in China from Germany FAG Group understands , FAG latest train control system developed for FAG Generator Sensor Bearing .

      FAG high speed bearings based train control system box and generator sensor bearing (GSB) ( as an independent power source ) combined well , for example, truck , FAG 's electronics engineers , are integrated into the software to learn GSB , so formation of a vehicle unit . Coupled with the information processing system , route operators and railway companies can achieve enhanced security and ease of maneuverability truck . GSB in the number of different signals are recorded and transmitted to the central processor . Complete data ( deep groove ball bearing on train system ) contains train schedules , route , schedule and risk analysis , location, residence time , and the associated temporary variable part .
  
       And general comparison , FAG GSB in axle by rotational movement of electrical induction magnet . This force is the typical power , 100w 24v .. so just have a separate , self-contained power source, the power storage unit , an increase of more features, such as automatic door, detection switches and sensors. To train control system , FAG Group with a sophisticated electronic system into a so-called commercial -vehicle unit and connecting with senior management information systems. Such signal processing , not only records the FAG bearings , but is also transmitted GPS satellite technology.
  

Germany FAG Bearing Group Automotive Division: skilled, powerful

Schaeffler Group's three active Division With FAG, LUK and three strong brands INA Schaeffler (Germany FAG bearings) Group, its mainly active in the automotive division, industrial and aerospace division Division.Germany FAG spherical roller bearing Group Automotive Division: skilled, powerfulSchaeffler Group's largest customer is the most important automotive industry, about 60% of the Schaeffler Group's sales from the automotive industry, the Schaeffler Group, as an almost all major automobile manufacturers and suppliers a reliable partner, FAG slewing ring bearing Group Automotive Division for the entire drive train, passenger commercial vehicle engines, chassis, transmissions and other parts units and suppliers to provide the most professional knowledge and innovative ideas and products. Germany FAG Bearing Group Aerospace Division: aerospace equipment and aerospace manufacturing partner of choiceGermany FAG Bearing Group Aerospace Division to support the development and production of special bearings for aerospace applications. Almost all aircraft using modern techniques to accomplish FAG Bearings, FAG is to become the world's leading technology development partners helicopter manufacturers and suppliers.

the automotive industry will benefit from this.

Schaeffler Group became the Patent Office, one of the top ten most innovative
        As of March 16, 2008, the German Patent and Trademark Office published the patent number. high speed bearings (Germany fag bearings) in the German Patent and Trademark Office Group ranked as the most active patent application units whose major brands FAG, LUK and INA. Which brand FAG and INA to 605 patents and 221 patent ranked eighth and twenty-one, which means that in the German Patent Office INA, FAG and LUK brand ranking for the fifth to become the most innovative companies a. Even Schaeffler with other brands IDAM, F "IS, Patton, Office for patent applications last year handed over more than 1,250 patents to. Also equivalent to an average of more than 5 per working day patents. Schaeffler Group's Executive Management Board Member responsible for worldwide roll bearings development techniques, Dr. Peter Piot, Gutzmer that "this innovative strength, is the mainstay of the company, the Schaeffler Group's solid foundation in more than 60 different industrial sector gives us the opportunity hardly any other company can transfer our expertise and introduce a new solution and our customers, the automotive industry will benefit from this. "For example, the Schaeffler focused on efforts to develop new developments aimed at more efficient use of resources. A recent example is the MultiAir valve train is completely changed. Developed by the Schaeffler Group and Fiat Powertrain, this is the first time to our customers at the Geneva Motor Show. At the same time strengthen the power, and the traditional car, the result is reduced by up to per cent of fuel consumption and carbon dioxide emissions.

the automotive industry will benefit from this.

Schaeffler Group became the Patent Office, one of the top ten most innovative
        As of March 16, 2008, the German Patent and Trademark Office published the patent number. Schaeffler (Germany fag bearings) in the German Patent and Trademark Office Group ranked as the most active patent application units whose major brands FAG, LUK and INA. Which brand FAG and INA to 605 patents and 221 patent ranked eighth and twenty-one, which means that in the German Patent Office INA, FAG and LUK brand ranking for the fifth to become the most innovative companies a. Even Schaeffler with other thin section ball bearings IDAM, F "IS, Patton, Office for patent applications last year handed over more than 1,250 patents to. Also equivalent to an average of more than 5 per working day patents. Schaeffler Group's Executive Management Board Member responsible for worldwide product development techniques, Dr. Peter Piot, Gutzmer that "this innovative strength, is the mainstay of the company, the Schaeffler Group's solid foundation in more than 60 different industrial sector gives us the opportunity ball bearing screw any other company can transfer our expertise and introduce a new solution and our customers, the automotive industry will benefit from this. "  For example, the Schaeffler focused on efforts to develop new developments aimed at more efficient use of resources. A recent example is the MultiAir valve train is completely changed. Developed by the Schaeffler Group and Fiat Powertrain, this is the first time to our customers at the Geneva Motor Show. At the same time strengthen the power, and the traditional car, the result is reduced by up to per cent of fuel consumption and carbon dioxide emissions.

A coil connected to a power receiving AC power

Tapered roller bearings mainly bear radial diameter and axial joint load. Load bearing capacity depends on the outer ring raceway angle, angle greater carrying capacity. These bearings are separable bearings, rolling bearing according to the number of rows into single row, double row and four row tapered roller bearings. Single row tapered roller bearing clearance to be adjusted during installation the user; double row and four row tapered roller bearing clearance in the factory according to user requirements is given, not to be user adjusted.
Tapered roller bearings have tapered inner and outer ring raceway, Tapered Roller arranged in between. All conical surface projection lines are the same point on the bearing axis together. This design makes tapered roller bearings particularly suitable for combined (radial and axial) loads. Most of the axial load bearing capacity is determined by the contact angle α; α angle increases, the higher the axial load capacity. Angle size calculation factor e; e larger the contact angle the greater the bearing axial load greater applicability.
Tapered roller bearings are usually separated type, namely the belt roller and cage assembly of inner components can be composed with tapered conical outer inner (outer) installed separately.
Tapered roller bearings are widely used in automotive, mill, mining, metallurgy, plastics machinery and other industries.
Power transformer is the function of power transmission, voltage conversion and insulation isolation, as a major soft magnetic components, power supply technology and power electronics technology has been widely used. According to the size of the power transmission, power transformers can be divided into several files: 10kVA above for high-power, 10kVA ~ 0.5kVA to medium power, 0.5kVA ~ 25VA for the low-power, 25VA following micro-power. Different transmission power, power transformer design are not the same, it should be self-evident. It was based on its main function is to power transmission, the English name "Power Transformers" translated as "Power Transformer", in many literature is still in use. What is called "power transformer" or called "Power Transformer" is good? Pending technology terminology of authority to choose and decide.
In almost all ball bearing manufacturer products should be used, it is simple in principle but according to different occasions (for different purposes) of the transformer winding process will be different requirements. The main function of the transformer: voltage conversion; impedance transformation; isolation; regulator (magnetic saturation transformers), etc., the general shape of the iron core transformer used with the E-and C-type core.
A transformer ---- stationary electromagnetic devices
A voltage-transformer can be converted into AC power with the frequency of another voltage AC power
The main Slim bearing of the voltage is set in a core and two windings on the core.
Transformer
A coil connected to a power receiving AC power, is called the primary winding, also known as the primary winding.
A coil connected to the load, send AC power, is called the secondary winding, also known as the secondary winding.
The primary winding of the secondary winding
Voltage phasor voltage phasors U1 U2
Current phasor current phasor I1 I2
Emf emf phasor phasor E1 E2
Turns turns N1 ??N2

Timken University at large have learning experience

Attaches great importance to the interests of employees
Under normal circumstances , Timken interests hoping to achieve three unified , that shareholders 'interests , the interests of customers , employees' interests .
Here, not only refers to the remuneration of employees' interests , but also including the work environment , individual capacity building , career development and so on. Provide resources to help employees self-study, in order to achieve the ability to enhance , is one of them .
Timken employees, Timken University at large have learning experience . This is an online site that offers mentoring programs and online training resources , covering about leadership , speech and eloquence , cultural differences, anti-corruption , ball bearing manufacturing technology, curriculum over 20,000 .
Take general manager Zhong Zhiyong , the April this year , has completed 15 courses , more than 20 courses in the second half there waiting for him .
"Different positions , every year a different course. Course functions, one to help employees improve , the second is for employees in mind , such as legal provisions updated, personal knowledge will have to make ."
In addition, Timken employees worldwide Education Foundation will offer scholarships to children and encourage them to pursue higher education .
Committed to creating sustainable value
As flagship product is the fan bearings , Xiangtan plant renewable energy industry has become an important part . Meanwhile, the plant also uses advanced LEED (LeadershipinEnergyandEnvironmentalDesign) environmental standards as a basis for bearing roller design , green energy saving in strict accordance with the standard factory building , and in 2011 received a LEED Gold certification. These are Timken responsibilities embodied in the environmental field .
In addition, Xiangtan plant also became the province's first national two safety standardization enterprises.
Among employees , spontaneous ride , pick up litter along the way along the Xiangjiang River ; donate team award , visit the orphanage children ; cooperation with Hunan University , Job Shadow Day ...... conduct these activities so that each participant felt to join communities, fulfilling and enjoyable .

is the largest amount of single row tapered roller bearings

Tapered Roller Bearings defined Alibaba mechanical 2012-03-19 Source: Alibaba mechanical information themes: mechanical printing machinery] [Alibaba tapered roller bearings can be separated from the inner ring with roller and cage assemblies and components outside ring can be installed separately. Roller and raceway contact at the contact line can reduce the stress concentration. Tapered roller bearings can withstand high radial and axial load. The tapered roller bearings can only pass one-way axial load, so as to pass the opposite direction of the axial load on the need install another with symmetrical tapered roller bearings.
Tapered roller bearings is the largest amount of single row tapered roller bearings. In the car's front wheels in recent years to spend the small size of the double row tapered roller angular contact bearing. Four tapered roller bearings used in large-scale cold rolling mill and other heavy machines.
Single row tapered roller bearings have an outer ring, the inner ring and a set of tapered roller by a box-type cage into an inner components. Outer and inner component separation, tapered roller roller bearing company according to ISO standard dimensions, any standard model of a tapered roller bearing outer or inner component and the outer or inner components of the same model to achieve international interchangeable. Except that portion of the outer ring of the same model dimensions, tolerances must comply with ISO492 (GB307) requirements, the cone angle of the inner components, component cone diameter must also comply with the relevant provisions of the swap.
Typically, single row tapered roller bearing outer ring raceway of the cone angle of 10 ° ~ 19 ° before to be able to withstand the load and radial load bearing joint action. Cone angle larger axial load capacity are greater. Large cone angle of the bearing, post code plus B, cone angle between 25 ° ~ 29 °, which can withstand greater axial load. In addition, single row tapered roller bearings can be adjusted during installation size of the clearance.

Here is SKF's exclusive distributor in China reported

SKF executives of leading enterprises of Chinese fansRecently, in 2010, ball bearing the International Wind Energy Conference, SKF global renewable energy sector, Mr. Stefan Karlsson responsible person to accept an interview with reporters and fans on Chinese enterprises into the development status, and published a point of view.
Here is SKF's exclusive distributor in China reported, according to officials Stefan Karlsson SKF introduced similar Sinovel, Goldwind and other Chinese domestic wind turbine equipment leading enterprises, has reached more advanced international level of manufacturing wind turbines. Currently there are about 80 local Chinese wind power generators around the manufacturer, SKF have partnerships with most of them.Mr Stefan Karlsson SKF executives of leading enterprises of Chinese fans, said: "Although China has reached international advanced level bearing roller wind turbine, wind turbines have several years of operating experience, to go through the test of time in the long run, fans of quality problems is the relationship between the nature of the final cost of the problem. domestic wind turbine manufacturer in the measure of costs have a feature often easier to consider only wind turbine manufacturing costs, but it ignores some important aspects, that is, wind power machine throughout its life cycle subsequent running costs in the Chinese market, SKF's main competitors or those who have international background of the imported bearings manufacturers for the domestic wind turbine manufacturers, they are more willing to choose some meet international quality standards. "

Install needle bearing notes

 roll bearings clearance is defined as a case of a fixed ring, another ring in the radial or axial flow by the maximum amount, the clearance is divided into radial clearance and axial clearance two kinds . Move needle bearing assembly, the clearance is not too big, not too small. Clearance is too large, it will cause the load to move the body to withstand the reduced number of individual load increases to move the body, thereby reducing the accuracy of rotation of the bearing, reducing the service life; clearance is too small, the friction will increase, the heat generated increases, increased wear, also can reduce bearing life. Therefore, the bearing assembly must strictly control and adjust the clearance.

china bearing supplier temperature causes are: oil quality does not meet the requirements or deterioration, lubricant viscosity is too high; institutions assembly too tight (lack of space); bearing assembly tight; bearing ring on the shaft or housing rotation; overload large; bearing cage or rolling fragmentation.

1), the shaft and housing bore roundness and the vertical shoulder block bearing according to the appropriate precision requirements.

2), it is necessary to accurately calculate the rotating rings fit the amount of interference, but also suitable for accurate calculation of the amount of the fixed ring. Rotating rings blanch the amount of interference to the extent possible should also get smaller. As long as the operating temperature and ensure the effect of thermal expansion, and the maximum speed of the centrifugal force, resulting in a tight fit so as not to creep or sliding surfaces. Fixed ring size according to the work load and bearing size, select small clearance fit or interference fit, too loose or too tight is not conducive to maintaining the original shape exactly.

Summary of basic knowledge of automotive bearings

class = MsoNormal> Auto Bearing installation, use and maintenance of common sense : FANUCCNC systems and tools to connect and adjust wire cutting in the selection of the drive wire range of applications and market analysis procedures D80 constant volume blower forging technology SINUMERIK810D / 840D condensed commissioning Manual - alarm PowerMILL7.0 new functions and features threaded parts 9 CNC lathe programming source NC machining tool compensation Botek system is suitable for deep hole machining tool parts CNC milling CNC type which is suitable for this part milling plus KV800 inverter knitting machine for the processing plant on the application brings powerful advantages machine 5 axis machine tool industry commonly bilingual history of the development project VSR solder joint fatigue life prediction horizontal Lathe modular and programmable controller applications motor shaft bearing currents caused by burning and preventive measures 240 vibration machine manufacturing Information Practice progress World maintenance knowledge to use to install a car bearing assembly tool is demolished car an important distinction ordinary mechanical bearings automotive ball roller bearing mobile environment using force status working conditions more complex automotive catch into a very precision machine parts installed correctly using lubrication and maintenance is essential to achieve the basic functions of catch into a clean kerosene petrol bearing mounting and dismounting bearings with matching check related parts cleaned ready for use .
Car with ordinary mechanical bearing an important difference is that in the mobile automotive crossed roller bearing used in an environment , so its force status and working conditions more complex, while catching a car as a very precise mechanical parts , the correct installation and use , lubrication and maintenance for the realization of the basic functions essential to catch .
Bearing installation and removal
With clean kerosene or gasoline will bearings and related parts mated to clean ;
Check the bearing is ready to use consistent with the original model , with matching part size is qualified ;
With a special assembly tool pressed into the bearing sleeve , tool sleeve diameter must not exceed the outside diameter of the bearing wall , mounting force should be uniform , not shock and barbaric assembly ;
Bearings should be rotated after installation of bearings and related components to see if there catching phenomenon and abnormal noise ;
By host components required to fill the specified grease or oil ;

In the assembly of large bearings and bearing and shaft bore large amount of interference between the products must be the bearing oil bath heating, oil temperature at 80 degrees Celsius ; bearing removal , you must use special tools drawing class

how to install the rear thrust bearing test

Install thrust china bearing supplier, shaft ring and shaft should examine the vertical centerline. Method is fixed to the tank shell dial gauge face, the head of the table to touch the top of the bearing shaft rotating bearing ring raceway, while observing dial gauge pointer, if the pointer deflection, indicating ring and shaft centerline axis is not perpendicular. Tank shell hole deeper, we can still use an extension of the dial gauge head test.

Thrust bearing is installed correctly, the seat can automatically adapt to the rolling elements rolling, make sure to scroll down raceway body is located. If installed backwards, not only bearing is not working properly, and each mating surface would be subjected to severe wear. As shaft ring and seat ring and the difference is not very obvious, the assembly should be careful not to mistake. In addition, the thrust bearing race with the bearing hole should be left between 0.2-0.5mm gap to compensate for parts processing, the error caused by mounting inaccuracy, when in operation bearing ring center offset, this gap would ensure its automatic adjustment, avoid touching the friction to operate normally. Otherwise, it will cause severe damage to the bearing.

Summary of basic knowledge of automotive bearings

class = MsoNormal> Auto bearing catalogue installation, use and maintenance of common sense : FANUCCNC systems and tools to connect and adjust wire cutting in the selection of the drive wire range of applications and market analysis procedures D80 constant volume blower forging technology SINUMERIK810D / 840D condensed commissioning Manual - alarm PowerMILL7.0 new functions and features threaded parts 9 CNC lathe programming source NC machining tool compensation Botek system is suitable for deep hole machining tool parts CNC milling CNC type which is suitable for this part milling plus KV800 inverter knitting machine for the processing plant on the application brings powerful advantages machine 5 axis machine tool industry commonly bilingual history of the development project VSR solder joint fatigue life prediction horizontal Lathe modular and programmable controller applications motor shaft bearing currents caused by burning and preventive measures 240 vibration machine manufacturing Information Practice progress World maintenance knowledge to use to install a car bearing assembly tool is demolished car an important distinction ordinary mechanical bearings automotive bearings mobile environment using force status working conditions more complex automotive catch into a very precision machine parts installed correctly using lubrication and maintenance is essential to achieve the basic functions of catch into a clean kerosene petrol bearing mounting and dismounting bearings with matching check related parts cleaned ready for use .

Timken has developed two innovative products

Timken tapered roller bearing catalogue designed to carry both radial forces have combined loads of axial force designed in wind speed and direction are subject to change circumstances, is the ideal choice to control stress. This kind of bearing high power density, in the most compact layout provides the best performance. For fans with a main gearbox planetary gearbox applications, Timken has developed two innovative products: Planet-Pac Bearing (integrated planetary gear bearing assembly) and Integrated Flexpin Bearing (IFB, namely integrated IFB ). Integrated planetary gear bearing assembly of the tapered roller bearing outer ring gear integration, avoiding the outer ring generated by wear and tear. Simple and compact design reduces the system cost. Different types of Timken's tapered roller bearings in the fan box in both the spindle and the growth rate has been widely used for long-term stable operation of the fan to provide protection. In addition to models outside of Timken bearings, Timken company also provides lubrication products, sealing products, condition monitoring, maintenance tools and bearing repair services, provide users with full support for the fan to further improve equipment reliability and improved performance, Timken bearings used in large wind turbines on, in order to improve energy efficiency and reduce system cost has made important contributions.

Guide bearings apart when noting what

Ball has chosen and arranged the various modules can be selected using this characterization . Activities axis thorough Britain at the end of two solid shaft holding components. Between two points regardless of what state the dull appearance , whether it is not just a point , the precision of this configuration will not be affected , just depends on the end support configuration accuracy. In addition, if you want to Britain at the end of a ball screw linear guide pair transmission system , just to play three holes in a board , that two circular rail and ball bearing screw support bearings as a benchmark, which is the most simple to do pace . Britain at the end of this characterization, the process of the device without modulating. Processing punish square rail deal in doubt just use a punitive program guide . Because it can support the torque on complete bias , thus resulting in bearing guideways deputy in the square without the use of guide bearings . About light load , that is bearing loads and moment loads within the scope of talent , a single square rail bearings can provide guidance for the hope , but not complete the square rail goods can operate at sample Click portrayed . This guidance eliminates the appearance of the two diverging rails to hold on to the questions. However, there is still need to consider to hold on to Britain at the end of the transmission structure , square rails does not exceed the depiction and the end support across idle . Because the eccentric load moment is generated in the rail , and therefore , shall not be deemed a single rail is probably active whereabouts wide footprint (e.g. 300mm) use . Before making a decision , you should inspect rail torque rating of its torque load stiffness.
      Linear guide open to doubt a meticulous . Linear guide slider left and right ends of the surface with plastic parts, equipment , please do not use the hard stuff hammering rocket , after the commissioning of the device , do not let any object speeding its impact, assuming plastic parts break , the ball will roll out , the slider will fall 2 . linear guide who lives in the factory before a lubricant , if you want to hold washing , dry point that should be first in the lives lubricants, restraint linear guide running without lubrication under 3 do not need to do if the slider is detached from the linear guide , if not unloaded , it must first be helper linear guide on the positive, on the slider remove 4 . restraint random Unpack the linear guide components , Yibi affect the accuracy and sensitivity , linear guides free to install restraint do not meet the rules of the ball

Ball control card work

If, ball bearing screw in the process of acceleration and deceleration , a short play high current needs, you must be active in the planning stages of thinking equivalent thrust , depending on the actual needs , adding cease activity time . Else if the motor current is continuously pushing things matter more than the continuous current , but also dependable overheating problems . So the system in planning activities necessary when thinking about the layout of the motor heat dissipation characteristics . Lead offset preloading essentials : ( increase pitch or pitch out )

Features: on the pitch for the nut offset δ values ​​to replace the traditional double nut preload essentials , the essentials and more practical in the light preload , the best plan in the pre- pressure dynamic load of 5% or less. Tensile preload essentials features : the use of a pre- thick tablet will arrive two nuts outside the sheets essentials preload results , this is the most common use of the ball screw essentials . Features : the thin film preload , then screw nut bolt two together , to reach the pre- pressure of the results.
Ball control fundamentally similar essentials , such acceptance pulse controlled, active control card is still sent to the drive pulse , the other situation or if the current situation is the speed (or torque or strength situation ) by the same active controller sends voltage to the drive. Difference is that control linear motor, will not need to have complicated conversion strategy , gear ratio strategy , just directly to the activities tend to consider the isolation , strategy can be, but also directly with the activities set acceleration and speed that is biased available . Individually any motor problems accompanied by fever , we must think in the planning stages of this problem , fever tension from acceleration and deceleration , if the acceleration and deceleration are maintained at the current required to drive the motor and under continuous current , there will be no tension heating problem .

Raw material roller press bearing damage cause analysis and maintenance recommendations

In the dry process cement production line process, the raw material has been widely used roller press, and has made considerable economic and social benefits, a significant increase of its energy-saving effect is also recognized by the majority of manufacturers to use. But in the course of its use, the bearing life is short, damage and replacement process cycle is long, costly, labor-intensive, but it restricts the normal operation of the rotary kiln.

My company put into operation by the end of 2012 the two 4500t / d clinker production line, run until June 2003, four sets of Chengdu Lijun Industrial Co., Ltd. manufactured CLF180-120 there have been varying degrees of roller presses the problem of high bearing temperatures, 7 mid-May the 2nd roll maneuver near the gear side roller bearing damage. Total running time of 2041 hours, the service life of less than three months.

First, the device pre-operational status

Roller press run early roller bearing temperature between 50-60 degrees, there is no abnormal noise, bearing grease used by the U.S. Castrol brand Molub-Alloy 777-2 ES model roller presses grease, the amount of fuel in strict accordance with equipment manufacturers Requests the Executive. Five to six months, there have been several cycles of water blockage, resulting in bearing temperature up to 70 degrees. In mid-June, and found that the lower part of the inner bearing oil outlet circulating water discharge phenomenon occurs suspected side of the bearing end cap rupture caused by cooling water, then turn off the inside of the circulating water, the new grease replenishing the oil discharged into the roller press production. In early July, roller presses the bearing temperature has been hovering around 55 degrees to 75 degrees, for various reasons during the roller press is always open to open the stop, there have been more than 24 hours continuously feeding situation. July 10 start, roller press repeatedly appear continuous feeding more than four hours on account of the temperature exceeds 75 degrees to stop jumping. July 12 greaser checking the oil discharge roller press discovered the bearing fragments. Determine the bearing roller press has been damaged. Since the roller press has been put into the roll gap deviation, pressure instability. Deviation due to the roll gap gauge, pressure gauge, the width of the roll gap and other factors frequently exceeds the limit mediation, there have been almost no more than 48 hours continuously feeding situation.

Second, the disintegration of the investigation bearing damage

After the demolition of the roller press gearbox bearing cap open and found that there is a rift bearing outside diameter, a broken ball bearings, inner and outer diameter with five out of crack, the bearing inner and outer raceway badly worn bearing retainer wear . Bearing cap surrounded by circulating water cooling on both sides have two brass compression fracture phenomena, round copper tubes are flattened, leading to fracture, width of about 100mm. Check the other side of the roll maneuver roller bearings, intact, the bearing clearance of 0.75mm, within the normal range.

Third, bearing damage cause analysis and improvement

1 First, bearing life is too short not to troubleshoot and manufacturer of quality bearing assembly itself, but should also work with bearing operating conditions in harsh environments and have a great relationship.

2. Bearing thermal design flaws. Such a large bearing operating process will produce a lot of frictional heat, so that both sides of the bearing cap manufacturer designed circulating path, the heat generated by the bearing grease and the case conduction through the cooling copper tube absorbs heat water circulating outflow apparatus body, lower bearing temperatures. But it cooled copper mounting position is unreasonable, bearing swing too easy to squeeze into the brass, brass deformation caused by blockage, fracture, loss of cooling effect. To avoid copper tube is extruded, only increase the gap between the copper and the bearing, to ensure a greater swing bearing free space, which requires manufacturers to redesign, production bearing cap or another design a cooling device.

3 brass water lead to rupture of the rear bearing lubrication failure, it could be this short bearing life is an important factor. Equipment inspection work found during the inspections bearing lower discharge port has water leakage, immediately made a report, but this is not possible in the cooling copper pipe break after the first time discovered. Since the bearing inner brass cap by squeezing fracture, circulating water entering the bearing, destroyed the environment lubrication, the bearing balls and the raceway serious friction generates a lot of heat, bearing balls and the diameter of each component such damage.

4 brass frequent clogging cooling and design too small, poor cooling effect also affect bearing life. Cooled copper diameter is too small, the circulating water and debris clog adhesion brass scale deposition in the roller press often occurs during operation bearing high temperature, inlet and outlet brass examination revealed multiple blockage, affecting the cooling effect, the final installed at the inlet Y-strainer before easing clogging.

5 roller presses the material into the inadequate control of particle size, diameter 200mm super chunk too, long nip large deviations, corrective frequently lead to bearing overload and shorten the service life. Initial production mining crushing, crushing machine safety door is not well controlled, resulting in more than 150mm above the individual particle size of limestone blocks into the next process, clogging the feed opening roller press, leading to uneven feeding, causing the roll gap large deviations, and even lead roll sewing too large equipment mediation. Granularity than 100mm rigid material frequently enters roller presses, roller presses squeeze in an instant when all the large reaction force bearing on the bearing itself, the life of the bearing caused a fundamental impact. Improved granularity of limestone, sandstone and clay crusher materials and faulty phase continued up to more than two months, no broken, large water through the bypass feed materials into the roller press feeding system, more than 250mm above the chunk size is almost Each class appears stuck roll gap, resulting in the roll gap width gauge mediation. This is the roller press operation there have been no more than six months more than 48 hours continuously feeding the root cause.

6 There is no steady flow positions periodically removed materials, excluding enrichment metal, so that the device frequently overloaded mediation affect bearing life. Material into the roller press is impossible to avoid the presence of metal objects and accumulation roller presses the original width of the roll gap of about 20mm, 70mm roll gap will exceed the overload relief, less than 50mm metal objects will only increase the roll surface wear, greater than 50mm size metal objects or materials into the roller press is too large, it will cause the rollers instantly generate excessive impact force, resulting in the roll gap than 70mm, the pressure exceeds 15MPa, exceeds the bearing load limits, the control system will suddenly roller press release pressure or mediation. Especially metal roller presses will cycle loop in the roller press greatest harm. So they requested that must be periodically clearing, clearing accumulated in the roller press metal objects within the system, reduce or avoid damage to equipment, particularly bearing.

7 hidden when the hydraulic system is now hidden, long-term bias is serious roll gap. As the hydraulic system problems, often lower than the pressure roller presses the side of the working pressure, both sides of the roll gap large deviation hydraulic pump long-term frequent correction, resulting in roller presses the bearing operating conditions poor, heavy load, the service life is reduced.

Fourth, the late running Precautions

Roller press bearing life is short, equipment failure rate is the current cement industry a common problem, through analysis of the above reasons, the production process management is a top priority, as long as control the granularity of the material into the roller press, regularly scheduled clearance, reducing metal roller presses against the probability of overload damage to the bearings, excluding hydraulic system problems, eliminating the long-term bias roll gap phenomenon, problem solving partial cutting, take care of the bearing uniform force. As long as the above points, improving the operating environment of the equipment, the equipment can operate normally, to extend the life of each part, in order to improve the operation rate.

Rolling residual magnetism technical conditions

Truck crane telescopic cylinder piston rod (pole) grinding waste-prone, according to our experience, the following measures to prevent waste.

1 piece of each point carefully measuring the amount of remaining mill

Should be based on the workpiece bending, deflection, dislocation and other data to determine whether the depth marks grinding.

(1) for grinding of not more than 0.50mm left the site operator can carefully measure the deflection, bending, dislocation, marks and other values. Leaving less than 0.20mm for grinding workpieces must consult the staff agreed before grinding.

(2) If the amount of deflection or bending amount exceeding one third of the parts to wear straightening after grinding.

(3) measuring the diameter of dislocation sites on both sides of both sides of the deflection data and the data available at the mill minimum diameter maximum value minus the yaw yaw position value, the amount of the difference is the actual grinding. Such as: dislocation at the grinding capacity of the smallest diameter 0.40mm, maximum deflection part of the deflection is 0.30mm, the actual grinding capacity equal to 0.40-0.30 = 0.10mm, grinding capacity is small, it is likely appear in the grinding burn conditions, resulting in waste.

(4) marks the site of deep, roll bearings grinding rasp the former is best to use local symmetry points (the most serious side parts) filed a two symmetrical facets, by filing off the site measured. If the measured diameter minus the diameter of marks after less than 0.20mm, should consult before grinding.

(2) properly handle grinding burns

(A) before grinding grinding according to the above requirements can be checked, if the coarse grinding sparks big, there are local burns, while after two reciprocating grinding burn site can not be eliminated, it should be carried out once the workpiece deflection values measurements. If the deflection values ??were lower than the preceding grinding limit, should be straightened. By straightening still not eliminated, must be scrapped.

(2) grinding sparks should pay attention to the changes, once burned, the workpiece Serve waste. Special minor burns, if measured yaw values ??below one-third of the amount of grinding, you can continue grinding; than one-third of which should be scrapped.

Burn causes and the wheel model, the workpiece material is also a relationship. Preventive measures are timely repair wheel, adjust the amount of feed (coarse or fine grinding, if the feed rate is too small will produce minor burns), add enough coolant and adjust the workpiece and wheel speed.

3 Carefully observe the spark

Once the grinding sparks too large to immediately retract. After all coarse grinding sparks phenomenon should not be interrupted, if the deflection off the fire area exceeds the amount of a quarter mill, to be straightened. Each wheel sparks near the ends of the workpiece gradually increased, the top should be checked whether the temperature is too high, if the top temperature is consistent with the workpiece to be tight at the top end. If the spark through bays larger, it indicates that the site of the top bracket is unreasonable, so that it temperature. Grinding sparks should not exist when the elephant stopped, if a serious fire off what should be measured yaw and grinding capacity, when the amount of deflection over a quarter mill grind it up.

4. Strictly control the quality and accuracy of processing

The spot diameter measured values ??are inconsistent, brackets and tailstock respond timely adjustments.

(1) through coarse, semi-fine grinding, the workpiece is not cylindrical tolerance. If ovality tolerance of the parts of a broken fire phenomenon, should be measured yaw value, if this value exceeds 30μm should try again after straightening mill; After several feed grinding, in total more than 50μm feed when Sparks will no longer off the fire, measured ovality should be zero; when measured ellipticity still exceeds tolerance, you should try again after grinding wheel dressing, if the ellipse is still not eliminated, the top hole should be checked for damage, research injuries ( At this point the workpiece surface showing polygonal).

(2) the surface after grinding and finishing the reasons presented Duoleng measures: If wheel has been blunt, should be trimmed; wheel if there is noticeable vibration, balance should be adjusted; head frame, motor frame vibration isolation facilities have been damaged, shall be repaired ; excessive vibration if the workpiece itself, should be properly deceleration; top too tight or too loose, it should be adjusted.

(3) If the coarse surface occurs when a large spiral, the reason is bad dresser, grinding wheel dressing time must be uniform and must not have significant single angle spark phenomenon blunt surface after grinding wheel prone to large spiral.

(4) grinding, the workpiece often appear galling, scratched and dirty coolant phenomenon. To prevent this phenomenon, the new wheel should be finishing with a wire brush a few times (pay attention to safety).

(5) When grinding the workpiece phenomenon taper, drum, saddle-shaped, both ends of a diameter larger or smaller, you should adjust the bracket, tailstock, wheel overrun and the number of workpieces at both ends of the workpiece and the grinding wheel travel time.

5 strictly controlled two top parts of the temperature

According to two top temperature changes are reasonable judgment leading tightness; generally top temperature slightly higher than the temperature of the workpiece as the standard.

(A) two leading causes of high temperatures: First, the top too tight, two center hole is top notch and the workpiece misalignment. If the top is too tight, first loosen the top, add the butter on the two center hole and then adjust the tightness of the top.

(2) If there is a top temperature is too high, then the top center hole with the workpiece misalignment.

(3) When the temperature of the top two consistent temperature of the workpiece, the workpiece two polygonal phenomenon does not occur, and more uniform spark, this time to continue the grinding. As part two phenomena appear Duoleng, you should look at the top tight, if the workpiece does not burn, you can wear them all. When the workpiece two spark uneven, they will bear about the top end.

Bearing after the heat treatment quality problems often

A soft spot

Because insufficient heating and cooling is bad, improper operation and other causes hardening of the bearing surface of the part of the phenomenon known locally insufficient hardness quenching soft spots. It is the same as the surface decarburization can cause surface wear resistance and fatigue strength in serious decline.

Roller bearing parts in the quenching process due to the formation of stress cracks called quenching cracks. Cause such cracks reasons: because the quenching temperature is too high or too fast cooling, thermal stress and metal mass volume change when the stress fracture resistance than steel; work surface defects original (such as surface micro-cracks or draw marks) or steel internal defects (such as slag, severe non-metallic inclusions, white point, residual shrinkage, etc.) at a stress concentration quenching; severe surface decarburization and carbide segregation; parts after quenching and tempering insufficient or timely tempering; previous process caused by too much stress cold punching, forging folding, turning deep marks, oil, sharp edges, etc. ditch. Quenching cracks deep and slender, straight fracture, fracture surface without oxidation colors. The organization is characterized by quenching cracks no cracks on both sides of decarburization phenomenon, the obvious difference with forging cracks and material cracks. In short, resulting in quenching cracks may be due to one or more of these factors, the existence of internal stress cracks forming the main hardening. It is often in the bearing rings on the straight longitudinal cracks or ring cracking; ball bearing on the shape of the S-shaped, T-shaped or ring.

Second, due to heat

Three, overheating

Fourth, quenching cracks

Bearing parts in the heat treatment process, if it is heated in an oxidizing medium, the surface oxidation occurs to parts of the surface carbon content reduced, resulting in surface decarburization. Determination of surface decarburization depth available in metallographic examination and microhardness metallographic method. Surface decarburization depth over the last machining allowance will make parts scrapped. In the surface layer microhardness distribution curve measurement prevail, do arbitration criterion.

Five, surface decarburization

Six, heat deformation

Quenching temperature is low or poor cooling in the microstructure produced more than the standard prescribed troostite organization called due to heat tissue, which decrease in hardness, wear resistance drastically reduced, affecting bearing life.
Bearing parts during heat treatment, the presence of thermal stress and stress, this stress can be superimposed on each other, or partially offset, is complex, because it along with the heating temperature, heating rate, cooling, cooling rate, part shape and the size of the change, so the heat distortion is inevitable. Understand and grasp its variation can make the bearing part of the deformation (such as elliptical rings, rose and large size) placed controllable range, is conducive to the production of conduct. Of course, during the heat treatment the mechanical collision of parts also cause deformation, but this deformation can be used to reduce and improve operations avoided.
Port from the bearing part can be observed on the rough microstructure after hardening overheating. But to determine the exact extent of overheating must observe the microstructure. If GCr15 steel hardened tissues appear coarse acicular martensite, was quenched overheating tissue. Even cause serious overheating quenching cracks. As quenching overheated steel coarse crystals, may cause parts of the decrease in toughness, impact resistance decreased, the bearing life is reduced. Overheating tissues residual austenite increases, dimension stability decreased. Formation may be due to the quenching temperature is too high or too long causing heat insulation comprehensive overheating; also may be due to the original organization carbon ribbon severe in the two areas with the formation of carbon between the local martensite needles thick, caused by local overheating.

      Several bearing the above heat treatment process recurrent problem, which directly affect the quality of the bearing, so that the production process of the bearing, should try to avoid such a situation.

Bearing grinding process and requirements

Bearing in precision grinding, the rough demanding working surface of the grinding traces are often observed with the naked eye the surface of the grinding marks are the following:
      Bearing surfaces are crossed spiral traces traces happen mainly due to poor wheel of the bus straight, there is uneven phenomenon, grinding, grinding wheel and the workpiece is only partial contact bearing, when the workpiece or wheel back and forth several times after exercise , the performance will be reproduced in the workpiece and the cross-helix can be observed visually. The pitch of the helix and the workpiece table speed, the size of workpiece speed, but also with the wheel axis is not parallel to the guide lines and the table.
    (A) The main reason for the formation of helix
    1 Dresser bad, not chamfered corners, unused coolant to be trimmed;
    2 table guide rail lubricant too much, resulting workbench floating;
    3 machine precision is not good;
    4 grinding pressure is too big.
    (B) forming the bearing surfaces having the spiral cause
    1.V shaped rail rigidity bad, when an offset grinding wheel, but wheel edge in contact with the work surface;
    2 noisy wheel dressing table commutation speed is unstable, accuracy is not high, so that the edge of a grinding wheel dressing slightly less;
    3. Workpiece itself rigidity;
    4 wheel has broken too flaking grit and the workpiece grinding wheel under the iron plot attached to the surface, this should be a good dressing wheel with cooling water wash or scrub clean;
    5 wheel dressing well, there are local projections and so on.
    Surface appears scaly scaly surface reproduces the main reason is due to traces of grinding wheel cutting edge is not sharp enough, in the grinding occurs when "eating to live" phenomenon, when large vibration.
    Resulting in surface appears scaly traces of the specific reasons are:
    A grinding wheel surface litter and oil thing;
    2 Wheel untrimmed round;
    3 wheel blunt. Dressing sharp enough;
    4 fastening frame is not solid diamond, diamond or diamond quality is bad not shake sharp;
    5 Wheel hardness uneven.
    Face nap nap surface reproduces the main reason is due to traces of coarse grains shed, grain sandwiched between the workpiece and the grinding wheel and cause.
    Workpiece surface grinding was napping in the specific reasons are:
    1 coarse grinding traces left behind, grinding when not worn;
    2 coolant coarse grains and tiny grains filter is not clean;
    3 coarse abrasive wheel just trimmed off easily when;
    4 toughness validity or grinding wheel is too soft;
    5 abrasive workpiece material toughness with toughness and improper.
     Have a direct bearing surface waveform traces we milled workpiece cut a cross-section perpendicular axis line and zoom, you can see the surrounding approximately sinusoidal. So that the center line along the axis of rotation without translation, the track is the sine waveform around the cylinder, which is also known as a polygon. Generating direct wave because the wheel moves relative to the workpiece or the grinding wheel on the workpiece by cyclically changing pressure and vibration caused by the exigencies. This vibration may be forced vibration, it may be self-excited vibration, thus directly on the workpiece often more than one wave frequency.
    Direct waveform traces generated specific reasons are:
    A grinding wheel spindle gap is too large;
    2 Wheel hardness is too high;
    3 wheel static balance wheel well or dull;
    4. Workpiece speed is too high;
    5 infeed is too big;
    6 wheel spindle bearing wear, the gap is too large, resulting runout;
    7 wheel or bench pressing means "crawl" and so on.
    Surface of the workpiece surface reproduction burns often during grinding burns, burns there are several types, one burns machining direction along the wheel, dark black patches; Second, was the line or intermittent line shape.
    Workpiece surface grinding process of being burned, summed up in the following reasons:
    1 wheel too hard or too fine granularity tissue too dense;
    (2) Feed excessive cutting fluid supply, cooling conditions are poor;
    3. Workpiece speed is too low, wheel speed too fast;
    4 wheel runout is too large, constantly changing due to grinding depth and burn;
    5 dresser dressing is not timely or bad;
    6 diamond sharp dresser bad;
    7. Workpiece coarse grinding burns too deep, grinding allowance is too small, no worn;
    8 Workpiece clamping force or suction deficiencies in the grinding force, the workpiece stops phenomenon exists.
    Then the workpiece surface in the grinding process of how to know if it works burned? This is accomplished by periodic acid to check it out.
    Workpiece after pickling, the surface is wet, should immediately astigmatism lamp visual inspection, the normal surface was uniformly dark gray. If so software point, showing dark clouds like black spots, and the entire perimeter uncertain; if decarbonization, is rendered dark gray or black piebald; if grinding cracks, the crack was cracked like, yes burns, one surface along Wheel machining direction showing dark black plaques, two lines are present or intermittent lines like. If the grinding process in the burn-in phenomenon, must promptly analyze the causes and take effective measures to solve them, to eliminate bulk burns.
    Mainly the surface roughness of the surface roughness of the bearing parts are standard and process requirements, but in the processing and ultra-fine grinding process, for various reasons, often less than the specified requirements.
    Mainly the surface roughness caused mainly due to:
    1 grinding speed is too low, too fast feed rate, feed excessive, no feed grinding time is too short;
    2. Workpiece speed is too high or the workpiece axis and the wheel axis vibration is too large;
    3 wheel size is too coarse or too soft;
    4 wheel dresser too fast or trimming mechanism gap is too large;
    5 diamond wheel dressing is not sharp or of poor quality;
    6 ultra-fine oil stone quality is not good, the installation location is not correct;
    7 ultra-precision quality is mainly kerosene;
    8 ultra-precise time is too short.
    deep groove ball bearing in the grinding process, the work surface is achieved by high-speed rotation of the grinding wheel, grinding so if you do not follow the operating instructions for operation and adjust the device, it will work in the bearing surface of various defects, which affects The overall quality of the bearing.

Oil-bearing support bearing assembly rotating

Oil-bearing assembly of the supporting shaft. Its rings and rolling elements are precision machined. Bearing in the factory, in order to protect the surface of the raceways and rolling elements are not corroded, in between the raceways and rolling elements into a rust grease oil or rust.

Bearings should be cleaned before installation. With anti-rust oil sealed bearing directly available gasoline or kerosene cleaning; thick oil or grease rust rust charged shall, light mineral oil, such as 10 # transformer oil heating oil or fat will melt cooled, then gasoline or kerosene to clean. Sides with shields or seals bearing grease at the factory joined, so when you do not have to clean install. Coated with anti-rust lubricant oil dual IKO cross roller bearings, the installation also without cleaning. In cleaning the installation process, should prevent foreign matter falling into the bearings, the result of slight abrasive will cause between the rolling element and raceway wear, increased noise and vibration.

Oil-bearing assembly and disassembly, mainly through two ways. First, the interference rings onto the shaft or pressed into the bearing hole; First, by heating up a large diameter bearing it, or cooling the bearing outer diameter narrowing it will be easily mounted on the shaft bearing seat or push hole. When pressurized mode, mechanical force or fluid pressure through a dedicated device will force acts directly on the assembly and disassembly of the seat ring, and never allow loading and unloading of force pass through the rolling. Otherwise it will cause the surface of the raceway and rolling elements indentation, resulting in increased noise and vibration damage. If a heating or cooling means for detachably, the heating temperature should be strictly controlled or cooling temperatures. Because the strength of the bearing surface microstructure by the structure of the metal surface, the temperature is too high will cause the tempering effect; temperature was too low will cause embrittlement of the metal surface. Typically the heating temperature does not exceed 100 ℃, the cooling must not end at the lowest temperature of minus 50 ℃. Also to be considered to be uniform heating.

Practice has proved that non-oil bearing improper installation causes premature bearing damage is one of the reasons. The ferrule assembly and disassembly with the interference is a very difficult thing, so the design of supports, we must consider how IKO cross roller bearing assembly and disassembly and easy assembly and disassembly of the problem. For heavy machinery assembly and disassembly of large bearings often need to design special equipment. If the high-pressure oil removal would need to be designed accordingly oil, pipes and pumps.

Roller bearing raceway sounds unusual

Bearing raceway raceway sound and control the sound is running when the bearing, its rolling body raceway rolling issued a slippery continuous sound is unique will happen all the bearings of the basic sound. Sound that is generally bearing raceway sound with other sounds. Greater rigidity of the bearing seat, roll sound pressure level is lower. If the radial clearance is too small, the rolling sound pressure level and the main frequency will decrease as the radial clearance increases dramatically.

roller bearing fatigue failure is a failure surface forms, mainly for fatigue crack initiation, propagation and fracture processes in alternating load faults arising under long-term effects of the metal.

1 .. Overall eccentric bearing low precision approach: use specified levels of precision bearings.

2 .. spindle is bent or housing bore misalignment methods: Repair spindle or cabinet.

3 belt too tight: Adjust the belt so that proper tightness.

4 poor lubrication Methods: provide grade lubricating material and properly cleaned.

5 low quality assembly methods: improving the quality of assembly.

6 bearing housing laps: Replace worn bearings and related components.

7 large axial force method: cleaning, alignment ring seals the gap between the requirements of 0.2 ~ 0.3mm, correct impeller balance hole diameter and the checksum static equilibrium values.

8 Bearing damage: replace the bearings.

Control raceway sound methods are: selection of low-noise bearings that waviness small bearings, judicious selection of the conditions of use. Raceway sound often affect the entire mechanical noise reduction raceway sound can reduce the overall mechanical noise.

Requirements for machine tool spindle bearings

In the machine tool bearings, bearings is widely used. Spindle bearing with certain technical requirements. Introduce to you the following analysis

1 speed and temperature

With the development of science and technology, more and more high speed bearings, speed range and thus the greater the bearing high speed stability requirements are also increasing. Machine tool spindle bearing temperature is an important factor in limiting speed of the bearing. Under normal circumstances, the right choice bearing type, tolerance levels, configuration, clearance (preload) size, lubricants and lubrication, etc., to a certain extent, improve the speed performance of rolling bearings.

(2) carrying capacity and life

The general machine tool, the life of the main spindle assembly to maintain accuracy of the spindle is its period of use, therefore, required to maintain the accuracy bearing spindle assembly performance to meet life requirements. For heavy-duty machine tools or powerful cutting machine, you should first consider the bearing capacity.

3 stiffness and vibration resistance

To ensure the quality of the machining, the spindle system must have sufficient rigidity, otherwise it will have a greater re-mapping error even flutter. Vibration resistance refers to the forced vibration and self-excited vibration capability. Spindle assembly vibration resistance depends on the spindle and bearing stiffness and damping. Using the preload bearing can effectively increase the stiffness of the spindle system.

4 Noise

In high-speed grinder, the grinding noise and bearing noise is the main ingredient should be used in low-noise rolling bearings.