When bearings are mounted incorrectly the balls will cause brinelling on the raceway and undermine bearing performance and life. Brinelling is as small as 0.1micro in depth will have an adverse effect on acoustic noise levels as well as causing increased torque.
Several general rules apply to mounting bearings. When assembling a bearing on its shaft or in housing, it is critical that no force be applied to the balls. When mounting a bearing to a shaft always press the inner ring. When mounting a bearing into a housing press the outer ring. Never apply force to the outer ring when mounting to a shaft or to the inner ring when mounting into a housing. Never apply a shock load in either case.
Post time: Jun-26-2019