Abstract: The invention provides a system for axially keying and adjusting in position on a shaft the stator of a rotating machine such as an electric motor. The shaft is mounted on bearings at either end and an insulating disc is disposed between one of the bearings and the stator. The insulating disc comprises a recess, the median plane of which is substantially orthogonal to the shaft and a communicating channel formed between this recess and an annular space between a sleeve of the insulating disc. A settable bonding material is introduced into this space and a spacing bush is fitted over the shaft between the insulating disc and the adjacent bearing which passes into the annular recess and acts as a piston when the parts are assembled to drive the bonding material into the recess and take up any free play. The assembly is bonded together when the material sets.

Abstract: The shaft (18) of an electric motor is mounted at each end in a swivel bearing (22, 24). In order to take up the play which arises from mass-production tolerances, the shaft is held axially relative to one of the bearings (24) by means of a split ring (34) which is fixed to the shaft, a metal washer (36), a damping washer (38) made of rubber or like material, and a friction washer (40). The metal washer (36) includes axially directed projections which penetrate more or less deeply into the rubber depending on the amount of play or slack to be taken up.