To prevent the occurrence of early exfoliation at a rolling contact part of the rolling surface of each ball 9 with an inner ring raceway track 5 and an outer ring raceway track 7 even when a rolling bearing is installed in a housing of low rigidity made of an aluminum alloy.
Each dimension is regulated so that a value K computed in {(h1.5W)/(Da1.1D0.5)} satisfies 1.20K2.00, wherein D is an outer diameter of an outer ring 8, W is width in the axial direction of the outer ring 8, h is the minimum wall thickness of a portion provided at the outer ring raceway track 7 at the axial center part of the outer ring 8, and Da is the diameter of each ball 9. As a result, the rigidity of the outer ring 8 is sufficiently ensured without enlarging the outer ring 8 uselessly, and early exfoliation based on the elastic deformation of the outer ring 8 can be prevented.
| JPH0589954U | 1993-12-07 | |||
| JP2002542436A | 2002-12-10 |
| WO2000063569A1 | 2000-10-26 |
Takashi Daejeon
Masaki Muto
Kinzo Koyama
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