In many cases, the size of the inner hole of the imported bearing has been specifically limited by the structure of the machine or device. No matter whether the working life, SKF imported bearingstatic load coefficient and economy meet the requirements, the size calculation must be carried out before the final selection of other sizes and structural forms of imported bearings. The calculation includes comparing the actual load of the imported bearing with its load capacity.
The static load of the SKF imported bearing refers to that the imported bearing is static after loading (there is no relative movement between the inner and outer rings) or the rotation speed is very low. In this case, calculate the coefficient of excessive plastic deformation of raceway and rolling element.
Most SKF imported bearing are subject to dynamic load, and the inner and outer rings move relatively. The dimension calculation checks the early fatigue damage coefficient of the raceway and rolling element.
Only in special cases, the nominal service life can be calculated according to DIN ISO 281. For the design that pays attention to economic performance, we should make full use of the bearing capacity of SKF imported bearing as far as possible. In order to make full use of SKF imported bearing, the calculation accuracy of the size selection of imported bearings is more important.
Accuracy index of SKF Bearing: exceeding grade P4 accuracy of gb/307.1-94
High speed performance index: DMN value 1.31.8x 106 /min
Service life (average): > 1500 H
The service life of high-speed precision angular contact ball bearings is closely related to installation, and the following