SKF bearing life and rated dynamic load rating

1, under a certain load bearing life, SKF bearing in case of pitting experience before the revolution or hours, known as the bearing life. Due to the manufacturing precision, material uniformity degree of difference, even the same material, same size with a batch of bearings, under the same working conditions, its lifespan is not the same. Life if the statistics for 1 unit, the longest relative life is 4 units, the shortest is 0. 1 - 0. 2 units, the ratio of the longest and the shortest life expectancy of 20 - 40 times. To determine the standard of SKF bearing life, bearing life and reliability. 2, rated life the same specifications ( Type, material, process) A batch of bearings, under the same working conditions, 90% of the bearings do not produce pitting, experienced revolutions or hours called bearing rated life. 3, the basic dynamic load rating to compare the SKF bearing of the bearing capacity of the pitting, regulations bearing rated life expectancy of one million RPM ( 106). , can withstand the maximum load as the basic dynamic load rating, expressed as a C. Is under dynamic load rating C SKF bearing, the bearing one million RPM ( 106). Pitting failure does not occur and reliability was 90%, the greater the C higher bearing capacity. The basic dynamic load rating ( 1) The centripetal bearing refers to the pure radial load ( 2) Thrust ball bearing is refers to the pure axial load, 3) Angular contact bearing is refers to produce pure radial displacement of the radial component