Patent ID: 9312736
Filing Date: 2016-04-12
CPC Classification: F16C,H02K

Claim Text:
1. An electric machine, comprising: a motor shaft containing a bearing-side shaft shank having a circumferential side with an annular groove formed therein; a machine housing; a stator disposed in said machine housing; a rotor disposed in said machine housing and disposed on said motor shaft supported on a non-drive side; a bearing unit on said non-drive side disposed axially displaceably within said machine housing and having a ball bearing configuration with bearing inner rings, said bearing unit further having a sleeve enclosing said ball bearing configuration, and an elastomeric element, on which said sleeve rests radially elastically such that said sleeve can be displaced in an axial direction; a coupling unit, said motor shaft being guided out of said machine housing on a drive side without a bearing and guided to said coupling unit; a shrink disk disposed at said coupling unit and providing a rigid coupling of said motor shaft to a machine shaft of a work machine; and said bearing unit further having an inner securing ring for axially fixing an adjacent one of said bearing inner rings of said ball bearing configuration, said inner securing ring having a ring outer edge seated in said annular groove disposed on said circumferential side in said bearing-side shaft shank of said motor shaft.