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High Performance™ Depressed Center Grinding Wheels
Type 28 
Type 27 
Type 28 Spin-On 
Type 27 Spin-On Use on Angle Grinders 
For Grinding ONLY |
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GRINDING WHEELS IMPROPERLY USED ARE DANGEROUS. Always refer to A.N.S.I. B7-1, "Safety Requirements for the Use, Care and Protection of Abrasive Wheels."
Metal, Stainless
| Type 27 - A30S - Fast Grind | |||||
|---|---|---|---|---|---|
| Aggressive grinding - Fast Action. Ideal for most metals, including stainless and other hard alloys. An excellent "all-purpose" spec. | |||||
| Part # | Diameter | Thickness | Arbor | Max RPM | Box Qty. |
| (in.) | (in.) | (in.) | (RPMs) | (each) | |
| A0054 | 3" | 1/4" | 3/8" | 20,000 | 25 |
| A0390 | 4" | 1/4" | 3/8" | 15,000 | 25 |
| A0414 | 4" | 1/4" | 5/8" | 15,000 | 25 |
| A1236 | 4-1/2" | 1/4" | 7/8" | 13,300 | 25 |
| A1236H | 4-1/2" | 1/4" | 5/8"-11 | 13,300 | 10 |
| A2236 | 5" | 1/4" | 7/8" | 12,000 | 25 |
| A2236H | 5" | 1/4" | 5/8"-11 | 12,000 | 10 |
| A3236 | 6" | 1/4" | 7/8" | 10,000 | 25 |
| A3236H | 6" | 1/4" | 5/8"-11 | 10,000 | 10 |
| A5356 | 7" | 1/4" | 7/8" | 8,600 | 25 |
| A5356H | 7" | 1/4" | 5/8"-11 | 8,600 | 10 |
| A8353 | 9" | 1/4" | 7/8" | 6,800 | 25 |
| A8353H | 9" | 1/4" | 5/8"-11 | 6,800 | 10 |
| Type 27 - A24/30T - Heavy Duty | |||||
|---|---|---|---|---|---|
| Extremely rugged and hardworking. Ideal for tough applications - beveling, edge or flame cut grinding. | |||||
| Part # | Diameter | Thickness | Arbor | Max RPM | Box Qty. |
| (in.) | (in.) | (in.) | (RPMs) | (each) | |
| A0395 | 4" | 1/4" | 3/8" | 15,000 | 25 |
| A0406 | 4" | 1/4" | 5/8" | 15,000 | 25 |
| A1226 | 4-1/2" | 1/4" | 7/8" | 13,300 | 25 |
| A1226H | 4-1/2" | 1/4" | 5/8"-11 | 13,300 | 10 |
| A2226 | 5" | 1/4" | 7/8" | 12,000 | 25 |
| A2226H | 5" | 1/4" | 5/8"-11 | 12,000 | 10 |
| A3201 | 6" | 1/4" | 7/8" | 10,000 | 25 |
| A3201H | 6" | 1/4" | 5/8"-11 | 10,000 | 10 |
| A5301 | 7" | 1/4" | 7/8" | 8,600 | 25 |
| A5301H | 7" | 1/4" | 5/8"-11 | 8,600 | 10 |
| A8301 | 9" | 1/4" | 7/8" | 6,800 | 25 |
| A8301H | 9" | 1/4" | 5/8"-11 | 6,800 | 10 |
| Type 28 - A30S - Fast Grind | |||||
|---|---|---|---|---|---|
| Aggressive grinding - Fast Action. Ideal for most metals, including stainless and other hard allys. An excellent "all-purpose" spec. | |||||
| Part # | Diameter | Thickness | Arbor | Max RPM | Box Qty. |
| (in.) | (in.) | (in.) | (RPMs) | (each) | |
| A1237 | 4-1/2" | 1/4" | 7/8" | 12,000 | 25 |
| A1237H | 4-1/2" | 1/4" | 5/8"-11 | 12,000 | 10 |
| A2237 | 5" | 1/4" | 7/8" | 10,000 | 25 |
| A2237H | 5" | 1/4" | 5/8"-11 | 10,000 | 10 |
| A5360 | 7" | 1/4" | 7/8" | 8,600 | 25 |
| A5360H | 7" | 1/4" | 5/8"-11 | 8,600 | 10 |
| A8360 | 9" | 1/4" | 7/8" | 6,800 | 25 |
| A8360H | 9" | 1/4" | 5/8"-11 | 6,800 | 10 |
| Type 28 - A24/30T - Heavy Duty | |||||
|---|---|---|---|---|---|
| Extremely rugged and hardworking. Ideal for tough applications - beveling, edge or flame cut grinding. | |||||
| Part # | Diameter | Thickness | Arbor | Max RPM | Box Qty. |
| (in.) | (in.) | (in.) | (RPMs) | (each) | |
| A1227 | 4-1/2" | 1/4" | 7/8" | 12,000 | 25 |
| A1227H | 4-1/2" | 1/4" | 5/8"-11 | 12,000 | 10 |
| A2227 | 5" | 1/4" | 7/8" | 10,000 | 25 |
| A2227H | 5" | 1/4" | 5/8"-11 | 10,000 | 10 |
| A5302 | 7" | 1/4" | 7/8" | 8,600 | 25 |
| A5302H | 7" | 1/4" | 5/8"-11 | 8,600 | 10 |
| A5617 | 7" | 5/16" | 7/8" | 8,600 | 25 |
| A8302 | 9" | 1/4" | 7/8" | 6,800 | 25 |
| A8302H | 9" | 1/4" | 5/8"-11 | 6,800 | 10 |
Concrete, Masonry
| Type 27 - C24/30P - Heavy Duty | |||||
|---|---|---|---|---|---|
| Designed for concrete and masonry applications. Made with silicon carbide grain, the C24/30P also offers fast grinding on nonferrous metals. | |||||
| Part # | Diameter | Thickness | Arbor | Max RPM | Box Qty. |
| (in.) | (in.) | (in.) | (RPMs) | (each) | |
| A0396 | 4" | 1/4" | 5/8" | 15,000 | 25 |
| A1257 | 4-1/2" | 1/4" | 7/8" | 13,300 | 25 |
| A1257H | 4-1/2" | 1/4" | 5/8"-11 | 13,300 | 10 |
| A2239 | 5" | 1/4" | 7/8" | 12,000 | 25 |
| A2239H | 5" | 1/4" | 5/8"-11 | 12,000 | 10 |
| A5446 | 7" | 1/4" | 7/8" | 8,600 | 25 |
| A5446H | 7" | 1/4" | 5/8"-11 | 8,600 | 10 |
| A8446 | 9" | 1/4" | 7/8" | 6,800 | 25 |
| A8446H | 9" | 1/4" | 5/8"-11 | 6,800 | 10 |
| Type 28 - C24/30P - Heavy Duty | |||||
|---|---|---|---|---|---|
| Designed for concrete and masonry applications. Use C24/30P Type 28 as an economical alternative to diamond blades or abrasive cupstones. | |||||
| Part # | Diameter | Thickness | Arbor | Max RPM | Box Qty. |
| (in.) | (in.) | (in.) | (RPMs) | (each) | |
| A1258 | 4-1/2" | 1/4" | 7/8" | 12,000 | 25 |
| A1258H | 4-1/2" | 1/4" | 5/8"-11 | 12,000 | 10 |
| A5447 | 7" | 1/4" | 7/8" | 8,600 | 25 |
| A5447H | 7" | 1/4" | 5/8"-11 | 8,600 | 10 |
| A8462 | 9" | 1/4" | 7/8" | 6,800 | 25 |
| A8462H | 9" | 1/4" | 5/8"-11 | 6,800 | 10 |