Anti-friction bearing temperature rise for NEMA frame motors

An acceptable antifriction bearing temperature is recommended, and, in particular, the location for monitoring the bearing temperature rise for NEMA frame chemical industry severe-duty squirrel-cage induction motors is identified. The relationship between the bearing temperature rise and stator winding temperature rise is investigated. An overview of the types of antifriction bearings most commonly used, criteria for the selection of such bearings, and factors affecting bearing life is presented.<
>