Good
| Material | Operation | Speed | Good | Better | Best |
|---|---|---|---|---|---|
| High Speed Steel / Tool Steel / High Alloy Steel | Rough | 35 | AA46/54 K5 V8 | RA46/54 J6 V206 | 1CUMISA46 J6 VC500 |
| 50 | AA46/54 K5 V50 | RA46/54 J6 V206/50 | 1CUMISA46 J6 VC500 /50 | ||
| Finish | 35 | AA60 K5 V8 | RA60 J6 V206 | 1CUMISA60 J6 VC500 | |
| 50 | AA60 K5 V50 | RA60 J6 V206/50 | 1CUMISA60 J6 VC500 /50 | ||
| Tungsten Carbide | 35 | CGC60 K5 VG | GC60 K5 VG | GC60 K5 VS2110 | |
| 50 | CGC60 K5 VG/50 | GC60 K5 VG/50 | GC60 K5 VS2110/50 | ||
| Special Tool Steels | Rough | 35 | RAA46/54 J6 V206 | 55A461 J7 VC500 | 1CUMISA461 J7 VC500 |
| 50 | RAA46/54 J6 V206/50 | 55A461 J7 VC500/50 | 1CUMISA461 J7 VC500/50 | ||
| Finish | 35 | RAA60 J6 V206 | 55A60 J7 VC500 | 1CUMISA60 J7 VC500 | |
| 50 | RAA60 J6 V206/50 | 55A60 J7 VC500/50 | 1CUMISA60 J7 VC500/50 |
| CUMI Code | Grit Range | Diameter | Thickness | Speed | Hardness | Structure | ||
| (mm) | (inch) | (mm) | (inch) | (mps) | ||||
| CUMISA | 46 - 120 | 80 - 250 | 31/8 - 9 | 3 - 25 | 1/8 - 1 | 35 & 50 | I - L | 5 - 7 |
| RA/RAA | ||||||||
| 12A | ||||||||
| AA | ||||||||
| GC | ||||||||
| CGC | ||||||||
The CUMI Tool Room Grinding Wheels are engineered for precision tool manufacturing and reconditioning where surface finish, geometry retention, and material removal control are critical. Designed for use on both dry and wet grinding machines, these wheels support the manufacture and regrind of drills, reamers, milling cutters, taps, end mills, and high-precision cutting tools—delivering consistent performance and long wheel life.
Widely used in cutting tool manufacturing, regrinding workshops, CNC toolrooms, steel precision tool suppliers and fabrication support units.
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