High-speed precision KOYO bearings, mainly used for a lighter load high-speed rotation occasions, requiring precision bearings, high speed, low vibration and low temperature rise and a certain life. Often the support of high-speed spindle installed in pairs, the inner surface grinder spindle speed key component parts. 
Main technical indicators: 
Bearing accuracy indicators: more than GB/307.1-94 P4 level accuracy 
2 high-speed performance: the DMN value 1.3 to 1.8x 106 / min 
Life (average):> 1500 h 
High-speed precision the KOYO bearing life and a great relationship, should note the following: 
Bearing installation should be clean, clean room, KOYO bearings carefully matching bearing spacer to go through grinding, parallelism across loop should be controlled in the the spacer height premise is to maintain the inner and outer rings, in 1um; 
KOYO bearings before installation should be clean, cleaning the inner slope upward, feel should be flexible, no sense of stagnation, dry, into the required amount of oil, such as in the case of oil mist lubrication should be placed in a small amount of oil mist; 
Bearing installation should be used specialized tools, even by force, non-beat; 
Bearing store should be clean and ventilated, non-corrosive gases, relative humidity less than 65%, long-term storage should be regularly rust.