Chamfer dimension limits for rolling bearings conforming to IS:3697-1966 'Boundary dimensions for tapered roller bearings' IS: 5669-1970 ' General plan of boundary dimensions for radial rolling bearings', and IS: 5932-1970 ' Boundary dimensions of thrust bearings with flat seats'.
1.1 It does not apply to chamfer r1 on tapered roller bearings ( see IS : 3697-1966 ).
IS 5934-1970 history
1971IS 5934-1970 Chamfer and fillet radii of rolling bearings