UC type bearings refer to Pillow block bearings.

Its characteristic is that the outer diameter surface of its outer ring is a sphere, which can be fitted into the corresponding concave sphere bearing seat to play the role of centering. Although its basic performance with deep groove ball bearings should be similar, but because of the bearing are mostly applied in mechanical rough, installation location is not accurate, the axis of the shaft with a hole to neutral, or under the condition of large axial length and deflection etc, and the bearing itself precision is not high, some structure is rough, so the performance of the actual performance comparison on the same specifications of the deep groove ball bearings to play quite a discount.