Patent ID: 6836041
Filing Date: 2004-12-28
Classification: F04D,F16C,H02K

Abstract:
A bearing device for a motor, the bearing device comprising:a bearing set including a first bearing and a second bearing, a material of the first bearing being different from a material of the second bearing; and a shaft being rotatably received in the bearing set with the first and second bearings contacting the shaft along an axial direction thereof, wherein the bearing set further includes a third bearing, wherein the bearing device further comprises a bearing case, and the first, second and third bearings are received in the bearing case, and wherein two annular recesses are defined in respective opposite ends of the bearing case, the first, second and third bearings each are cylindrical, the first, second and third bearings each define a central hole, the central holes have substantially the same diameter, the recesses respectively receive the second and third bearings, the first bearing is received in the bearing case between the second and third bearings, and the shaft is rotatably received in the central holes.