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Unlock the maximum performance of your 3M™ Cubitron™ 3 Fibre Discs by pairing them with the 3M™ Disc Back-up Pad. Each component of this system—the grinder, the back-up pad, and the abrasive disc—is engineered to work together to optimize abrasive life, cut rate, and consistency.
This essential system component provides firm support for your fibre disc, ensuring maximum contact with the workpiece for faster cuts and longer disc life.
Choose the correct pad hardness to maximize your productivity and results for your specific application:
Extra Hard (Red): Engineered for the most demanding jobs. This pad provides a firm backing required for heavy, high-pressure grinding applications.
Ideal for: Heavy stock removal, beveling, weld grinding, surface grinding, and flame cut smoothing.
Use with: Coarse grit discs, such as Grade 36+.
Hard (Black) & Medium (Gray): Designed for versatility, these pads offer the perfect balance of stiffness and flexibility for medium-to-high pressure applications.
Ideal for: Grinding and blending applications where a finer finish is desired.
Use with: Medium and finer grit discs, such as Grades 60+ and 80+.
| 3M ID | 3M Part No. | Hardness | Diameter (in.) | Max RPM |
| 7100363168 | 11224 | Extra Hard - Red | 4 | 15,000 |
| 7100258731 | 88655 | Extra Hard - Red | 4-1/2 | 13,300 |
| 7100258733 | 88656 | Extra Hard - Red | 5 | 12,000 |
| 7100362486 | 11225 | Extra Hard - Red | 6 | 10,000 |
| 7100258730 | 88657 | Extra Hard - Red | 7 | 8,600 |
| 7100363075 | 11226 | Hard - Black | 4 | 15,000 |
| 7100363248 | 11227 | Hard - Black | 4-1/2 | 13,300 |
| 7100362591 | 11228 | Hard - Black | 5 | 12,000 |
| 7100362609 | 11229 | Hard - Black | 6 | 10,000 |
| 7100360002 | 11230 | Hard - Black | 7 | 8,600 |
| 7100363273 | 11231 | Medium - Gray | 4 | 15,000 |
| 7100362772 | 11232 | Medium - Gray | 4-1/2 | 13,300 |
| 7100362610 | 11233 | Medium - Gray | 5 | 12,000 |
| 7100362920 | 11234 | Medium - Gray | 6 | 10,000 |
| 7100362838 | 11235 | Medium - Gray | 7 | 8,600 |
