California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 3 - General Plant Equipment and Special Operations
Article 21 - Use, Care, and Protection of Abrasive Wheels
Table A-4 - Minimum Dimensions for Straight Flanges-for Mechanical Grinders 12,500 S.F.P.M. To 16,500 S.F.P.M
Universal Citation: 8 CA Code of Regs A-4
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
| 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 |
| 1 FLANGES 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.
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