This standard specifies the minimum chamfer size of the non-thrust end of the outer ring of single row angular contact ball bearings, which is different from that specified in GB/T 273.3-1988. This standard applies to bearings in diameter series 9.0 and 2 with a contact angle not exceeding 30°, and to bearings in diameter series 2 and 3 with a contact angle exceeding 30°.
GB/T 20058-2006 Referenced Document
GB/T 274-2000 Rolling bearings-Chamfer dimension-Maximum values
GB/T 20058-2006 history
2017GB/T 20058-2017 Rolling bearings-Single-row angular contact ball bearings-Chamfer dimensions for outer ring non-thrust side
2006GB/T 20058-2006 Rolling bearings.Single-row angular contact ball bearings.Chamfer dimensions for outer ring non-thrust side