BEARING MECHANISM, PIVOT DEVICE WITH BEARING MECHANISM, AND SPINDLE MOTOR

摘要

PROBLEM TO BE SOLVED: To provide at low cost a bearing mechanism which has superior assembling performance and suppress the production of contaminative substances. SOLUTION: On the upper end side of a shaft member 61, an upper support member 111 is arranged above the upper end surface 611 of the shaft member 61. This upper support member 111 has an upper recessed abutting surface 111 which abuts against the upper end surface 611 of the shaft member 61. The upper abutting surface 112 while abutting against the upper end surface 611 of the shaft member 61 with specific contact pressure to the shaft member 61 through a contact pressure adjusting mechanism pivotally supports the shaft member 61 on the upper side. On the lower end side of the shaft member 61, pivot ?supporting constitution is provided similarly to the upper end side. Consequently, the shaft member 61 can be supported rotatably on an axis PA of rotation without using any bearing.