These bearings are applied to support the cool-rolling mills for thin steel sheets. The precision is normally higher than P4. They are required to stand strong shocks, as well as long service life and high reliability.
They must have high rotational precision. For all the bearings on the same shaft, the deviation in tolerances for sectional dimensions of these bearings must be ≦6μm , the deviation in tolerance for two neighbouring bearings must be ≦4μm
Class: P5,P4