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US 7,598,641 B2Granted
Electrical machine with preloaded ball race and method for manufacturing the same
AssigneeSiemens Aktiengesellschaft
InventorsJoachim Baumgartner, Tobias Buban
Life of this patent
Estimating the term…
Abstract
An electrical machine with a ball race preloaded by elastic deformation of a bearing end plate as well as a method for manufacturing the same comprises a stator and a rotor with rotor shaft. The rotor shaft is supported via the ball race in the bearing end plates. At least one bearing end plate is embodied so that it can be elastically deformed in an axial direction and the preloading of the ball race is created by a preloading of the bearing end plate in the axial direction.
Claims14
An electrical machine comprising
- a stator and
- a rotor, wherein the rotor comprises a rotor shaft which is supported in its two end areas in a respective ball race, and each ball race is connected to a respective bearing end plate, wherein
- one of the bearing end plates is configured to be elastically deformed in the axial direction and serve as a preloading element for the ball race, the ball race being preloaded in the axial direction by preloading of the one bearing end plate, and
- the other bearing end plate is embodied rigidly in the axial direction.
1 more element
An electrical machine comprising:
- a stator, and
- a rotor comprising a rotor shaft which is connected via at least one first ball race to at least one first bearing end plate and via at least one second ball race to at least one second bearing end plate,
- the at least one first ball race is preloaded in the axial direction,
- the at least one first bearing end plate is embodied to be elastically deformable in the axial direction, and
- wherein the preloading of the at least one first ball race is achieved by a preloading of the at least one first bearing end plate elastically deformable in the axial direction,
- the at least one first bearing end plate is pulled against the stator in the axial direction by the preloading, and wherein the first ball race is arranged on the outside of the at least one first bearing end plate facing away from the stator, and
- the at least one second bearing end plate is embodied rigidly in the axial direction.
4 more elements
Dependencies are inferred from the claim text.