Shaped Norton Toolroom Grinding Wheels for Metals
The special shapes of these wheels provide more clearance than typical straight wheels.
38A white wheels are for light material removal. They stay cool during use, so they're a good choice for heat-sensitive applications. They are aluminum oxide, which is the most common abrasive used in grinding metal.
32A purple wheels are for medium to heavy material removal. They are aluminum oxide.
32AA purple wheels are for medium to heavy material removal. They are a blend of aluminum oxide and ceramic aluminum oxide, which lasts up to twice as long as 32A wheels.
5SG blue wheels are for heavy material removal. They are ceramic aluminum oxide, which lasts up to five times as long as 32A wheels.
Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
For technical drawings and 3-D models, click on a part number.
Wheel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Thick. | Arbor Hole Size | Max. Speed, rpm | Abrasive Material | Abrasive Bond Material | Type | Shape | Grit (Surface Texture) | Norton Abrasive Grade | Each | |
38A White—VBE Bond | |||||||||||
For Steel, Iron | |||||||||||
| 4" | 1 1/2" | 1 1/4" | 5,730 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | K | 0000000 | 000000 |
| 5" | 1 3/4" | 1 1/4" | 4,585 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 46 (Rough) | K | 0000000 | 00000 |
| 5" | 1 3/4" | 1 1/4" | 4,585 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | K | 0000000 | 00000 |
32A Purple—VBE Bond | |||||||||||
For Steel, Iron | |||||||||||
| 3" | 1 1/4" | 3/4" | 7,640 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | K | 00000000 | 00000 |
| 4" | 1 1/2" | 1 1/4" | 5,730 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 46 (Rough) | K | 00000000 | 00000 |
| 4" | 1 1/2" | 1 1/4" | 5,730 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | J | 00000000 | 00000 |
| 4" | 1 1/2" | 1 1/4" | 5,730 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | K | 00000000 | 00000 |
| 4" | 1 1/2" | 1 1/4" | 5,730 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 80 (Smooth) | K | 00000000 | 00000 |
| 5" | 1 3/4" | 1 1/4" | 4,585 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | J | 00000000 | 000000 |
| 5" | 1 3/4" | 1 1/4" | 4,585 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | K | 00000000 | 000000 |
| 6" | 2" | 1 1/4" | 3,820 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 46 (Rough) | K | 00000000 | 000000 |
| 6" | 2" | 1 1/4" | 3,820 | Aluminum Oxide | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | J | 00000000 | 000000 |
32AA Purple—VTR Bond | |||||||||||
For Steel, Stainless Steel, Iron, Nickel | |||||||||||
| 4" | 1 1/2" | 1 1/4" | 5,730 | Aluminum Oxide/Ceramic Alumina Blend | Vitrified Clay | Type 11 | Flared Cup | 46 (Rough) | K | 00000000 | 00000 |
| 4" | 1 1/2" | 1 1/4" | 5,730 | Aluminum Oxide/Ceramic Alumina Blend | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | J | 00000000 | 00000 |
| 5" | 1 3/4" | 1 1/4" | 4,585 | Aluminum Oxide/Ceramic Alumina Blend | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | J | 00000000 | 000000 |
5SG Blue—VS Bond | |||||||||||
For Steel, Iron | |||||||||||
| 4" | 1 1/2" | 1 1/4" | 5,730 | Ceramic Alumina | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | J | 00000000 | 00000 |
| 5" | 1 3/4" | 1 1/4" | 4,585 | Ceramic Alumina | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | K | 00000000 | 000000 |
For Aluminum, Brass, Bronze, Carbides, Ceramics, Composites, Copper, Fiberglass, Glass, Plaster, Plastic, Rubber, Stone, Titanium | |||||||||||
| 4" | 1 1/2" | 1 1/4" | 5,730 | Ceramic Alumina | Vitrified Clay | Type 11 | Flared Cup | 60 (Rough) | L | 00000000 | 00000 |
| 4" | 1 1/2" | 1 1/4" | 5,730 | Ceramic Alumina | Vitrified Clay | Type 11 | Flared Cup | 80 (Smooth) | J | 000000000 | 00000 |
Toolroom Grinding Wheels for Hardened Steel
Made with boron nitride, second in hardness to diamond, these wheels are highly wear resistant and easily cut difficult-to-grind steel parts. While they’re not as hard as diamond, they dissipate heat better.
Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
For technical drawings and 3-D models, click on a part number.
Wheel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Thick. | Arbor Hole Size | Max. Speed, rpm | Abrasive Wd. | Abrasive Material | Abrasive Bond Material | Type | Shape | Color | Choose a Grit (Surface Texture) | Each | |
For Hardened Steel | ||||||||||||
Unthreaded Arbor Hole | ||||||||||||
| 3 3/4" | 1 1/2" | 1 1/4" | 9,670 | 1/16" | Boron Nitride | Synthetic Resin | Type 11 | Flared Cup | Light Gray | 0000000 | 0000000 | |
| 3 3/4" | 1 1/2" | 1 1/4" | 9,670 | 1/8" | Boron Nitride | Synthetic Resin | Type 11 | Flared Cup | Light Gray | 0000000 | 000000 | |
| 5" | 1 3/4" | 1 1/4" | 7,250 | 1/8" | Boron Nitride | Synthetic Resin | Type 11 | Flared Cup | Light Gray | 0000000 | 000000 | |
Toolroom Grinding Wheels for Carbide, Ceramics, and Glass
A nickel-coated diamond grit and synthetic resin bond make these wheels extremely hard and wear resistant.
Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
For technical drawings and 3-D models, click on a part number.
Wheel | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Thick. | Diamond Wd. | Arbor Hole Size | Max. Speed, rpm | Abrasive Material | Abrasive Bond Material | Type | Shape | Abrasive Surface | Color | Choose a Grit (Surface Texture) | Each | |
For Carbide, Ceramics, Glass | |||||||||||||
Unthreaded Arbor Hole | |||||||||||||
| 3 3/4" | 1 1/2" | 1/16" | 1 1/4" | 9,675 | Diamond | Synthetic Resin | Type 11 | Flared Cup | Partial Face | Silver | 00000000 | 0000000 | |
| 3 3/4" | 1 1/2" | 1/8" | 1 1/4" | 9,675 | Diamond | Synthetic Resin | Type 11 | Flared Cup | Partial Face | Silver | 00000000 | 000000 | |
| 5" | 1 3/4" | 1/8" | 1 1/4" | 7,250 | Diamond | Synthetic Resin | Type 11 | Flared Cup | Partial Face | Silver | 00000000 | 000000 | |
Heavy-Removal Grinding Wheels for Angle Grinders—Use on Metals
A large grinding surface, combined with a thick layer of rough abrasive removes more material than other wheels. They are also known as Type 11 wheels, flared-cup wheels, snagging wheels, and cup stones.
Wheels are often used to grind weld seams and remove flaws from castings. The full backing provides additional support.
Wheels for steel are aluminum oxide, which is the most common abrasive used in grinding metal.
Wheels for steel and stainless steel are zirconia alumina, which grinds faster and lasts longer than aluminum oxide.
Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
For technical drawings and 3-D models, click on a part number.
Wheel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Thick. | Arbor Hole Thread Size  | Max. Speed, rpm | Abrasive Material | Type | Shape | Backup Pads Required | Backing Material | Color | Grit (Surface Texture) | Each | |
Partial Backing | ||||||||||||
For Steel | ||||||||||||
Threaded Arbor Hole | ||||||||||||
| 4" | 2" | 5/8"-11 | 9,070 | Aluminum Oxide | Type 11 | Flared Cup | No | Steel | Black | 16 (Rough) | 000000 | 000000 |
| 5" | 2" | 5/8"-11 | 7,260 | Aluminum Oxide | Type 11 | Flared Cup | No | Steel | Black | 16 (Rough) | 000000 | 00000 |
| 6" | 2" | 5/8"-11 | 6,050 | Aluminum Oxide | Type 11 | Flared Cup | No | Steel | Black | 16 (Rough) | 000000 | 00000 |
| 6" | 2 1/2" | 5/8"-11 | 6,050 | Aluminum Oxide | Type 11 | Flared Cup | No | Steel | Black | 16 (Rough) | 000000 | 00000 |
For Steel, Stainless Steel | ||||||||||||
Threaded Arbor Hole | ||||||||||||
| 4" | 2" | 5/8"-11 | 9,070 | Zirconia Alumina | Type 11 | Flared Cup | No | Steel | Black | 24 (Rough) | 0000000 | 00000 |
| 5" | 2" | 5/8"-11 | 7,260 | Zirconia Alumina | Type 11 | Flared Cup | No | Steel | Black | 24 (Rough) | 0000000 | 00000 |
| 6" | 2" | 5/8"-11 | 6,050 | Zirconia Alumina | Type 11 | Flared Cup | No | Steel | Black | 24 (Rough) | 0000000 | 00000 |
Full Backing | ||||||||||||
For Steel | ||||||||||||
Threaded Arbor Hole | ||||||||||||
| 4" | 2" | 5/8"-11 | 9,070 | Aluminum Oxide | Type 11 | Flared Cup | No | Steel | Black | 16 (Rough) | 000000 | 00000 |
| 5" | 2" | 5/8"-11 | 7,260 | Aluminum Oxide | Type 11 | Flared Cup | No | Steel | Black | 16 (Rough) | 000000 | 00000 |
| 6" | 2" | 5/8"-11 | 6,050 | Aluminum Oxide | Type 11 | Flared Cup | No | Steel | Black | 16 (Rough) | 000000 | 00000 |
| 6" | 2 1/2" | 5/8"-11 | 6,050 | Aluminum Oxide | Type 11 | Flared Cup | No | Steel | Black | 16 (Rough) | 000000 | 00000 |
For Steel, Stainless Steel | ||||||||||||
Threaded Arbor Hole | ||||||||||||
| 4" | 2" | 5/8"-11 | 9,070 | Zirconia Alumina | Type 11 | Flared Cup | No | Steel | Black | 24 (Rough) | 0000000 | 00000 |
| 5" | 2" | 5/8"-11 | 7,260 | Zirconia Alumina | Type 11 | Flared Cup | No | Steel | Black | 24 (Rough) | 0000000 | 00000 |
| 6" | 2" | 5/8"-11 | 6,050 | Zirconia Alumina | Type 11 | Flared Cup | No | Steel | Black | 24 (Rough) | 0000000 | 00000 |
Heavy-Removal Grinding Wheels for Angle Grinders—Use on Nonmetals
Wheels have a large surface area and a thick layer of rough abrasive for heavy material removal on concrete and stone. They are also known as Type 11 wheels, flared-cup wheels, snagging wheels, and cup stones.
Wheels are silicon carbide, which won't generate much heat. The full backing provides additional support.
Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
For technical drawings and 3-D models, click on a part number.
Wheel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Thick. | Arbor Hole Thread Size | Max. Speed, rpm | Abrasive Material | Type | Shape | Backing Material | Backup Pads Required | Color | Grit (Surface Texture) | Each | |
Partial Backing | ||||||||||||
For Concrete, Stone | ||||||||||||
Threaded Arbor Hole | ||||||||||||
| 4" | 2" | 5/8"-11 | 9,070 | Silicon Carbide | Type 11 | Flared Cup | Steel | No | Black | 16 (Rough) | 000000 | 000000 |
| 5" | 2" | 5/8"-11 | 7,260 | Silicon Carbide | Type 11 | Flared Cup | Steel | No | Black | 16 (Rough) | 000000 | 00000 |
| 6" | 2" | 5/8"-11 | 6,050 | Silicon Carbide | Type 11 | Flared Cup | Steel | No | Black | 16 (Rough) | 000000 | 00000 |
| 6" | 2 1/2" | 5/8"-11 | 6,050 | Silicon Carbide | Type 11 | Flared Cup | Steel | No | Black | 16 (Rough) | 000000 | 00000 |
Full Backing | ||||||||||||
For Concrete, Stone | ||||||||||||
Threaded Arbor Hole | ||||||||||||
| 4" | 2" | 5/8"-11 | 9,070 | Silicon Carbide | Type 11 | Flared Cup | Steel | No | Black | 16 (Rough) | 000000 | 00000 |
| 5" | 2" | 5/8"-11 | 7,260 | Silicon Carbide | Type 11 | Flared Cup | Steel | No | Black | 16 (Rough) | 000000 | 00000 |
| 6" | 2" | 5/8"-11 | 6,050 | Silicon Carbide | Type 11 | Flared Cup | Steel | No | Black | 16 (Rough) | 000000 | 00000 |
| 6" | 2 1/2" | 5/8"-11 | 6,050 | Silicon Carbide | Type 11 | Flared Cup | Steel | No | Black | 16 (Rough) | 000000 | 00000 |