ASAHI distributor - Guangzhou nsk bearing agents - Guangzhou nsk bearing agents 
 ASAHI distributor - Guangzhou nsk bearing agents - Guangzhou nsk bearing agents 

 Hindered the Rolling rotation resistance by rolling friction, sliding friction and lubricant friction. The rolling of the rolling body raceway rolling friction; sliding friction rolling element cage guide surface of the rib guide surface of the cage and roller bearings on the roller end and ring ribs. Lubricant friction by the lubricant composition in contact at the internal friction and lubricant mixing and extrusion. A set of bearing friction, rolling friction, sliding friction and lubricant friction, the sum of the impedance of the resistance of the bearing motion. Lubrication technology task is to develop a different grease (oil) and its lubrication, bearing the resistance minimum the longest life expectancy. 
 Development trends at home and abroad 
 Foreign advanced industrial countries, the common condition of the bearing grease (oil), technology and production has been completely cross the border, has formed a series of variety and mass production capability, major trend is to improve some of the special circumstances of the performance of the grease. being studied, such as Aerospace perfluorinated ether grease vacuum stability, climb the shift as well as the viscosity-temperature properties; Another example is the low fat, good results in the application, but the lubrication mechanism can not have a good theory elaboration. Again, the use of gaseous lubricants in high temperature (200-4000C) research. Research task of bearing lubrication is very heavy, if funds allow, should focus on to solve the following problems: First, to improve the service life of existing seals bearing grease at ambient temperature; Second, increase the vibration of the low-noise bearing grease performance; Third, research and development of new varieties of the common conditions bearing grease to fill the gaps. 
 Main contents and objectives 
 China's bearing grease gap with foreign countries, the next decade grease content and objectives are: to study ways to improve the life of grease, household appliances with sealed bearings (such as washing machines, vacuum cleaners, computers, air conditioners, etc.) and difficult to repair or demolition of run precision sealed bearings for the destruction of parts (precision machine tool spindles, precision instrument shaft, deep-water operations mechanical transmission, etc.), so that the grease life is equivalent to the mechanical life; study grease noise, low-noise bearing (v3/z3, v4/z4, etc.) to obtain the noise value of 3-5dB or more; research and development 15-20 grease new varieties, forming the basic pattern of the series bearing grease. Where high temperature, ambient temperature and low temperature of about 8-10 varieties, medium or high level of motor bearing grease 5-8 varieties, and space navigation, and other special conditions bearing grease 5-8 varieties. 
 In the ring processing, molding methods include the following: forging forming, turning forming, cold rolling forming and cold (temperature) extrusion molding. The most widely used in the above molding method, forging forming applications, about 80% of the total production capacity of turning directly forming rod (tube) feeding can be used for a number of small general-purpose products. Since the 1980s of the 20th century, the the some of China's small and medium-sized enterprises in the the the production of of small and medium-sized ferrule adopted the cold ring rolling and cold (temperature) extrusion the molding process. 
 1) forging forming 
 Metal forging can eliminate the inherent weaknesses of improving metal structure, a reasonable distribution of the metal flow lines, metal tightness. Forging the molding processing craft widely used in the NSK ID one way bearing to eliminate any bearing problems molding processing in the, the can be completed the from the inner diameter of ~ 20mm small-scale products to the the the processing of the super-large products of the the outer diameter 5000mm. Common forging forming methods: hot forging processing, forging processing, warm forging processing, China to forging. 
 Hot forging processing because of its molding equipment is divided into: free forging process, forging press forging process, flat forging machine forging process and high-speed forging machine process. 
 2) cold rolling forming 
 Cold rolling expansion process is one that enhances the utilization of materials, increase the density of the metal structure, to keep the stream of metal to the advanced technology of the linear method, it is a scrap processing methods. In theory, cold rolled formed products were not turning the heat treatment and grinding. At present, the cold rolling process is mainly used in small deep groove ball NSK one-way bearing, as its main process: 
 The rough forging (ring) - turning (in addition to the channel) - Rolling (groove and chamfer) diameter - soft grinding both ends of the surface. 
 The process of cold rolling and forging molding process, the accuracy of the product in addition to affected by the precision equipment, but also by the effects of mold precision.