Patent ID: 6577035
Filing Date: 2003-06-10
Classification: F16C,H02K,Y10T

Abstract:
An electric motor comprising:a support block having a ball bearing housing containing a ball bearing including a static race and a rotating race; a rotor projecting from said housing on one side of said support block, and a rotor shaft traversing said housing, said rotating race, and said support block; a stator assembly mounted around said rotor on said one side of the support block and fastened on said support block; an annular seal squeezed between said stator assembly and a periphery of said fixed race of the ball bearing, a pressure of said annular seal against the fixed race preventing axial and rotational movement of said fixed race; and a sealing bell sealingly surrounding said rotor on said one side of the support block, said sealing bell having a non-magnetic cylindrical portion interposed between said rotor and said stator assembly and having a rim bent radially outwards and inserted between said stator assembly and said support block, said rim being held pressed against said annular seal by the fastening of said stator onto said support block; wherein the bell sealingly separates a first space portion containing the rotor from a second space portion containing the stator.