Rotating Electric Machine

The objective of the present invention is to obtain a rotating electric machine with which damage to a bearing housing part can be prevented by preventing rotation of the outer ring of the bearing due to a decrease in the binding force of the bearing housing part and the outer ring of the bearing due to a difference in the thermal expansion of the bearing housing part and the outer ring of the bearing which is caused by the generation of heat when the rotating electric machine is driven; and thus achieving a cost reduction since the use of a special bearing is not required and preventing a gap filling member from falling out of the bearing housing part. With this rotating electric machine a resin case (24) by means of thermal expansion fills a gap between the bearing housing part and the outer ring of an anti driving side bearing said gap occurring due to a difference in the thermal expansion of the bearing housing part and the anti driving side bearing which is caused by the generation of heat during driving. A hook (25) that protrudes radially inward is formed in at least one location on the circumferential edge part of the resin case on the side opposite the rotor and a recessed part which is engaged by the hook (25) is formed in a flange part of the bearing housing part through which the shaft passes.

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