Electric motor with improved support for shaft, uses a packing ring made of an elastic material between bearing and bearing housing to avoid vibration and compensate misalignment

摘要

The motor has the rotor (22) supported in the frame by ball bearings (32). A packing ring (34) is between the outer cage of the bearing and the bearing housing (20). The ring is made of an elastic material to provide damping, and has an axial dimension longer than the one and a half times the bearing width. The ring has a 'L'-shaped profile to provide axial as well as radial location.