| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rolling bearing with low torque, low friction, and low heat generation while having excellent conductivity and resistant to electric corrosion. <P>SOLUTION: A deep groove ball bearing includes an inner ring 1, an outer ring 2, a plurality of rolling elements 3, and contact type seals 5, 5. The contact type seal 5 consists of a core bar 51, and an elastic body section 52 made of an elastic material with conductivity such as a conductive rubber. The locking section 53 of the elastic body section 52 is fitted in the seal groove 21 of the outer ring 2, thereby attaching the contact type seal 5 to the deep groove ball bearing. Moreover, the seal lip section 54 of the elastic body section 52 is in slide-contact with the seal surface 25 of the inner ring 1. The seal surface 25 is made into a corrugated surface with crest sections 25a and trough sections 25b alternately continued in the circumferential direction. A cut extended in a radial direction is arranged in the vicinity of the peak of the crest section 25a, and a corner section 27 is thus formed in the boundary between the corrugated surface and the cut. <P>COPYRIGHT: (C)2010,JPO&INPIT |
