Founded in 1918, NTN Co., Ltd., a Japanese listed company, is one of the three largest bearing enterprises in Japan and one of the five largest comprehensive bearing manufacturers in the world. The company has more than 12000 employees and annual sales of US $2.05 billion (related sales of US $2.85 billion). It is located in Germany, the United States, France, Canada, Australia, Singapore South Korea and other 12 countries and regions have established R & D institutions or production bases. The company produced constant velocity universal joint, an important part of automobile drive series, with sales of more than 100 billion yen in 2003, becoming the second largest constant velocity universal joint manufacturer in the world. Headquartered in the Western District of Osaka, it has 11 production offices, 25 business offices and 3 research institutes in Japan; It has 20 wholly-owned production plants, 2 research institutes and 48 business offices abroad. NTN's production, sales and techno

Timken is a global manufacturer of high-quality bearings, alloy steel and related parts and accessories. No matter where in the world, as long as there is equipment operation and power transmission, you can see Timken's technology and products. Timken bearings produce 230 types and 26000 tapered roller bearings of different specifications, which are widely used in countries all over the world. As early as more than 100 years ago, Timken bearing company promised to abide by the code of ethics and integrity in business operation. Henry, founder of Timken bearing company Timken once said, "if you have an idea that you think is right, stick to it... But it's important not to do anything to shame your name." Today, this spirit has become the core value of Timken. Timken bearing has a global 27,0

Innovation of ina technology for decades, ina has always represented creative solutions, professional standards in design and production, and great attention to customer requirements. Breaking away from the shackles of thinking mode, breaking through the obstacles of traditional habits and looking for new ways are one of the essence of corporate culture, whether at the beginning of the company or today after decades. Back in 1946, George? Dr. Georg Schaeffler and his brother Wilhelm founded the Schaeffler company and proved the significance of breaking through the thinking framework in 1949. At that time, his research and development of needle roller and cage components led to a major breakthrough in the application of needle roller bearing in the industrial field and filled the gap in this field. George? Schaeffler's innovative spirit and desire for success

NSK (Japan Seiko Co., Ltd.) was founded in 1916. It is one of the * manufacturers in Japan that design and produce bearings. For decades, NSK has developed numerous new bearings to meet the needs of users all over the world, and has made great contributions to industrial development and technological progress. At the same time, with its technical advantages in precision machining, NSK continues to develop high, precision and cutting-edge products such as auto parts and precision mechanical components, and actively develops diversified operations in electronic applications. At present, NSK has established a sales network in more than 20 countries and regions around the world, and has more than 50 factories. The industry ranks among the top in the world. In order to thank the trust of Chinese users, NSK is committed to exporting advanced production technology and management to China with sustained economic development

Fag innovation is endless. Fag brand also originates from the inspiration of a genius. As early as 1883, in the small town of schweinfort in Germany, Friedrich? Friedrich Fischer designed a special steel ball grinder, which makes it possible to produce steel balls with complete balls by grinding process * times. The invention is considered to be the cornerstone of the rolling bearing industry. This is why fag has long been recognized as a pioneer in rolling bearing technology. Today, FAG has become one of the * brands in machinery manufacturing, automobile industry and aerospace technology. In the world's major industrial countries, there are fag companies, branches and sales agents. Fag has been part of the Schaeffler Group since 2001 and operates in the aerospace, automotive and industrial sectors of the group

About SKF bearings: since the invention of * sets of self-aligning ball bearings 100 years ago, SKF has gradually evolved into a knowledge-based company, and now provides * solutions to customers in five technical ability fields. These fields include bearings, bearing units and seals. Of course, they are also extended to other fields, including lubricants and lubrication systems, which play a vital role in the service life of bearings in many application fields; Mechatronics integrates the knowledge of mechanics and electronics into the system, so as to produce a more effective linear motion and induction system; And a complete set of services, from design and logistics support to condition monitoring and reliability system. SKF's business is divided into three departments: Industry Department, automobile department and service department. Each business unit serves the global market, * placed in and from

Antirust performance the grease used in the bearing must have antirust effect, and the antirust agent * can not dissolve in water The grease shall have good adhesion and can form an oil film on the steel surface, which can be maintained even if the grease is filled with water Mechanical stability grease will soften during machining, resulting in leakage When there are vibration applications, grease will be thrown into the bearing from the bearing seat If the mechanical stability of the grease is not enough, the grease will be thrown out of the bearing continuously, which will cause mechanical collapse of the soap structure and damage to the use of grease The oil seal must protect the bearing and lubricant to prevent foreign pollution. No matter sundries or moisture can penetrate into the bearing to prevent damage Correct installation and maintenance is an important factor to give full play to the longest service life of bearings At the same time, pay attention to the cleanliness of the

The suffix used for SKF single row angular contact ball bearing has the following meanings: A: the contact angle is 30 degrees AC: the contact angle is 25 degrees B: the contact angle is 40 degrees CA: Universal rationed bearing. In back-to-back or face-to-face configuration, the axial clearance is less than that of ordinary group (CB). CB: universal matched bearing. In back-to-back or face-to-face configuration, the axial clearance is ordinary group CC: universal matched bearing, In back-to-back or face-to-face configuration, the axial clearance is greater than that of the ordinary group (CB) DB: two bearings paired back-to-back DF: two bearings paired face-to-face DT: two bearings paired in Series E: optimized internal design f: machined steel cage GA: universal group bearing with light preload in back-to-back or face-to-face configuration GB: universal group bearing, In back-to-back or face-to-face configuration, with pre tightening GC: universal assembly shaft

There are two common types of noise caused by problems in bearing application, including scar sound and dust sound, which are described as follows: (1) scar sound and its control methods. If there is crack, indentation or corrosion on the rolling surface of rolling bearing, periodic vibration and noise like riveted rivets will occur. Its cycle may be fixed, but most of them correspond to the speed, The scars will occur continuously on the channel, and the scars will appear and disappear on the steel ball, and the noise will change with the installation and lubrication conditions. The control methods of this kind of noise include: do not knock the bearing during installation, and prevent the bearing from being installed obliquely when the bearing is assembled with the shaft and then installed into the bearing seat; Prevent bearing corrosion during storage and impact vibration during transportation; Use grease with high viscosity. (2) Dust noise and its control method

What is four point contact ball bearing: a set of four point contact ball bearing release bearing bears two-way axial load. The inner and outer ring raceways of contact ball bearing are peach shaped cross-section load. When the radial load is used, the steel ball point contact axial load acts. The steel ball point contact bears two-way axial load. The bearing bears moment load and has the function of single row contact ball bearing. The bearing forms point contact to ensure normal operation China's entry into WTO is not only a challenge, but also an opportunity. Experts pointed out that we should strengthen the research and development of CNC machine tools in China and speed up the development of universal CNC machine tools. Random talk on the service competition of China's machine tool manufacturing industry, the current situation and Prospect of China's milling machine and processing * market, the technical level and development direction of lathes at home and abroad, the production

We all know the importance of lubrication for bearings, so do anti friction bearings need lubrication? Today we take a look at the types and lubrication functions of anti-wear fag bearings with questions. Types of anti friction bearings: anti friction bearings are divided into two main types. They are ball bearings and roller bearings. At the same time, we should also know that due to the different manufacturers and specific uses of bearings, many different types have evolved according to these basic structures and. Lubrication function: the anti-wear lubricant has the following main functions: 1. Lubricate the sliding contact between the retainer and other parts of the bearing. 2. Lubricate any contact between the race and the roll that is not really rolling. 3. Lubricate the sliding contact between the roller and the guide in the roller bearing. 4. Lubricate all true rolling contacts in the bearing. Secondary function