Static loading includes not with the constant load time (such as gravity) and load changes slowly or even negligible inertia force of quasi-static load; shock loading and dynamic loading includes the short-term effects (such as air hammer), cyclic load changes periodically with time (such as the air compressor crankshaft) random load and non periodic change. The Cr is rated dynamic load, is the maximum load capacity in rotating state, the unit is KN, Co is the rated static load. Is not rotating load capacity, the two are in the radial direction load calculation.
The basic dynamic load rating of C is used to calculate the bearing in the dynamic stress, namely a rotation in loading state of bearing. The numerical representation according to the ISO 281:1990 standard, bearing load to provide basic rating life 1000000. It is assumed that the load is constant in magnitude and direction, the radial bearing radial load, thrust bearing for axial loads acting on the center.
Axial load: load along axis direction. Radial load: load perpendicular to the axis direction