Diamond Cup Wheel Speed Guidelines
| Diameter | Never Exceed RPM | |
| 4" | (102mm) | 15,000 |
| 4-1/2" | (114mm) | 13,300 |
| 5" | (127mm) | 12,000 |
| 6" | (152mm) | 10,185 |
| 7" | (178mm) | 8,730 |
| Diameter | Never Exceed RPM | |
| 4" | (102mm) | 15,000 |
| 4-1/2" | (114mm) | 13,300 |
| 5" | (127mm) | 12,000 |
| 6" | (152mm) | 10,185 |
| 7" | (178mm) | 8,730 |