Deep Groove Ball Bearing and Arc-Shaped Roller Assembly

Abstract

A deep groove ball bearing includes inner and outer rings having respective inner and outer ring raceways with respective curvature radiuses Ri, Re. A plurality of balls is disposed between the inner and outer rings and have a ball diameter Dw. The ratio of diameter to curvature radius(es) are Ri/Dw≥0.53 and/or Re/Dw≥0.53. The plurality of balls includes a first ball type having a hardness HC1 greater than a surface hardness HRi of the inner ring raceway and/or a surface hardness HRo of the outer ring raceway. An arc-shaped roller assembly for a paper machine has an arc-shaped roller supported by the deep groove ball bearing. Optimizing the outer/inner ring raceway(s) cost-effectively solves misalignment of the inner and outer rings and sliding wear problems, resulting in the deep groove ball bearing being particularly suitable for supporting an arc-shaped roller of a paper machine.

Dependencies are inferred from the claim text.