Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 7, grp. 3, art. 21, tbl. A-4

Current through Register 2024 Notice Reg. No. 45, November 8, 2024

Table A-4 - Minimum Dimensions for Straight Flanges-for Mechanical Grinders 12,500 S.F.P.M. To 16,500 S.F.P.M

Wheel Diameter	Wheel Hole Diameter	"B" Minimum Flange Diameter	"D" Minimum Thickness of Flange at Bore	"E" Minimum Thickness of Flange at Edge of Undercut	F ^ (D-E) Minimum Thickness*
20	6	8	1	1/2	1/2
20	8	10	1 1/2	3/4	3/4
24	12	15	2	1	1
30	12	15	2	1	1
36	12	15	2	1	1
¹FLANGES shall be of steel, quality SAE 1040 or equivalent, annealed plate, heat treated to R 25-30.
^*For wheels under 1 1/4 inch thick F dimension shall not exceed 40% of wheel thickness.

1. New NOTE filed 11-22-85; effective thirtieth day thereafter (Register 85, No. 48).

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.