Method of mounting a shaft in a bearing carrier and bearing carrier

摘要

A bearing carrier for a shaft of an electric motor has a carrier member supporting two bearings supporting the shaft. The carrier member has a single bearing seat accommodating the two bearings to ensure the two bearings are coaxially mounted. A spacing member axially separates the two bearings. The spacing member has a central passage through which the shaft extends with radial play, as well as two end surfaces parallel with each other, orthogonal to the axis of the passage and axially separated by a distance which corresponds to the desired mounting distance between the bearings. During assembly, the bearings and spacing member are mounted on the shaft to form a preassembled group. The preassembled group is pressed into the bearing seat of the carrier member, with one bearing being pressed against a stop formed at one end of the bearing seat.

主权项

1. A bearing carrier for mounting a rotatable shaft of an electric motor, comprising:
a stationary carrier member having an inner chamber extending axially; two bearings mounted in an axially spaced relationship within the inner chamber, each bearing having an internal ring and an external ring, the shaft being mounted in the internal rings of the bearings; and a spacing member disposed between the bearings and having two axial ends, each of the axial ends having an end surface in contact with the external ring of a corresponding bearing, wherein the spacing member has a central passage through which the rotatable shaft extends with radial play, the two end surfaces being parallel with each other, orthogonal to the axis of the passage and axially separated by a distance which corresponds to the desired mounting distance between the two bearings, wherein the spacing member has a radial outer surface conforming to the inner chamber and a radial inner surface, wherein the carrier member has a single bearing seat accommodating both bearings and the spacing member, and a stop formation formed at one end of the bearing seat, the external ring of one of the bearings abutting against the stop formation to set the axial location of the bearings within the carrier member, wherein the spacing member has a transverse wall extending radially inwards from one of the two axial ends, and the passage is formed in the transverse wall, and wherein the internal ring of said one of the bearings abuts against the transverse wall.