scope:

This Standard specifies the chamfer dimensions for outer ring non-thrust side of single-row angular contact ball bearings (hereafter referred to as "bearings") different from the chamfer dimensions specified in JIS B 1512-1. It is applicable for bearings in the diameter series 9, 0 and 2 for contact angles up to and including 30°, and in the diameter series 2 and 3 for contact angles over 30°.

NOTE : The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows:

ISO 12044: 1995 Rolling bearings-Single-row angular contact ball bearings- Chamfer dimensions for outer ring non-thrust side (MOD)

The symbols which denote the degree of correspondence in the contents between JIS and the corresponding International Standard are IDT (identical), MOD (modified) and NEQ (not equivalent) according to ISO/lEC Guide 21-1.