公开(公告)号：US20220224185A1

公开(公告)日：2022-07-14

申请号：US17647115

申请日：2022-01-05

Applicant: ABB Schweiz AG

Inventor： Janne Kamppuri ,  Samu Aarnivuo

IPC: H02K5/167 ,  H02K7/08 ,  F16C17/26

Abstract: The electric machine includes a shaft, a rotor, a stator, and a frame. The shaft is supported rotatably on the frame with an axially locating sleeve bearing at each axial end of the shaft. The axial play limiting the axial movement of the shaft is greater in one of the two axially locating sleeve bearings compared to the axial play in the other of the two axially locating sleeve bearings. An axial movement of the shaft is limited only by the bearing with the smaller axial play during normal operational circumstances and by both bearings during exceptional events, the bearing with the greater axial play reducing the axial load of the first bearing in such exceptional events.

公开(公告)号：US11817759B2

公开(公告)日：2023-11-14

申请号：US17647115

申请日：2022-01-05

Applicant: ABB Schweiz AG

Inventor： Janne Kamppuri ,  Samu Aarnivuo

IPC: H02K5/16 ,  H02K5/167 ,  F16C17/26 ,  H02K7/08

CPC classification number: H02K5/1672 ,  F16C17/26 ,  H02K7/083 ,  F16C2380/26

Abstract: The electric machine includes a shaft, a rotor, a stator, and a frame. The shaft is supported rotatably on the frame with an axially locating sleeve bearing at each axial end of the shaft. The axial play limiting the axial movement of the shaft is greater in one of the two axially locating sleeve bearings compared to the axial play in the other of the two axially locating sleeve bearings. An axial movement of the shaft is limited only by the bearing with the smaller axial play during normal operational circumstances and by both bearings during exceptional events, the bearing with the greater axial play reducing the axial load of the first bearing in such exceptional events.