Electric motor endshield having variable bearing arrangement

Details Electric motor endshield having variable bearing arrangement Electric motor endshield having variable bearing arrangement

2011-04-26

2011-04-26

Hanh, Nguyen N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

07932653

ABSTRACT:
An electric motor assembly includes a stator assembly and a rotor assembly having a shaft disposed within a motor case. The motor case includes an endshield with a centrally disposed bearing-receiving core that is configured to receive any one of a plurality of bearing assemblies, including at least a ball bearing and a self-aligning bearing, for rotatably supporting the shaft. The core includes a bearing assembly engagement surface with a generally cylindrical first portion and a generally frustoconical second portion, such that any of the selected bearings received therein directly contacts and engages the first surface portion or the second surface portion.

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Emerson In-House Parts Drawing depicting prior art Endshield Assembly (Revision dated Jun. 15, 1989).
Emerson In-House Parts Drawing depicting prior art Bearing Sleeve (Revision dated Jun. 23, 1998).

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