4 1/2" Cutoff Wheels | McMaster-Carr

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	Diameter Diameter	Show

4 1/2"

	Diameter Diameter	Hide

	Thickness Thickness

	Wheel Type Wheel Type

	Type 1		Type 27

	Arbor Hole Size Arbor Hole Size

5/8"-11

7/8"

	Arbor Hole Arbor Hole

Unthreaded

Threaded

	Arbor Hole Shape Arbor Hole Shape

	Round

	For Use On For Use On

	For Use With For Use With

Straight Grinders

Angle Grinders

Bench Grinders

	Grit Grit

	Abrasive Material Abrasive Material

	Wheel Shape Wheel Shape

Straight

Raised Hub

	Maximum Speed Maximum Speed

10,000 to 19,999 rpm

	Reinforcement Material Reinforcement Material

Fiberglass Mesh

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

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32 Products

Long-Life Straight Grinder Cutoff Wheels for Metal

Two layers of fiberglass mesh reinforcement give these wheels at least three times the life of standard cutoff wheels when cutting metal such as aluminum, iron, stainless steel, and steel. Choose coarser grit for fast cuts; choose finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	For Use On	Grit		Each
4 1/2" Dia.
0.045"	7/8"	13,580	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	36	00000000	00000

Fast-Cut Straight Grinder Cutoff Wheels for Metal

Side View

Run these high-density aluminum oxide wheels at higher speeds than standard cutoff wheels to make quick cuts in aluminum, iron, stainless steel, and steel. Wheels are reinforced with a layer of fiberglass mesh.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	For Use On	Grit		Each
4 1/2" Dia.
0.045"	7/8"	18,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	00000

Extra-Long-Life Straight Grinder Cutoff Wheels for Metal

Side View

These high-density ceramic oxide wheels have two layers of fiberglass mesh reinforcement and last up to twice as long as long-life cutoff wheels when cutting aluminum, iron, stainless steel, and steel.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	For Use On	Grit		Each
4 1/2" Dia.
0.045"	7/8"	18,000	Type 1	Straight	Ceramic Alumina/Ceramic Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	000000000	00000

Straight Grinder Cutoff Wheels for Stainless Steel

Side View

For quick cuts in stainless steel, run these high-density zirconia alumina wheels at a higher rpm than standard cutoff wheels. They’re reinforced with a layer of fiberglass mesh.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
0.045"	7/8"	18,000	Type 1	Straight	Zirconia Alumina	Fiberglass Mesh	60	0000000	00000

Flush-Cut Angle Grinder Cutoff Wheels for Metal

Side View

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts in aluminum, iron, stainless steel, and steel. Wheels are reinforced with two layers of fiberglass mesh. Choose coarser grit for fast cuts; choose finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	For Use On	Grit		Each
4 1/2" Dia.
0.045"	7/8"	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	00000
0.045"	7/8"	13,580	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	24	0000000	0000
3/32"	5/8"-11	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	24	0000000	0000
3/32"	7/8"	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	24	0000000	0000

Angle Grinder Cutoff Wheels for Metal

Side View

Use these wheels to cut through metal such as aluminum, iron, stainless steel, and steel. They are reinforced with two layers of fiberglass mesh. Choose coarser grit for fast cuts; choose finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	For Use On	Grit		Each
4 1/2" Dia.
0.04"	7/8"	13,300	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	00000000	00000
0.045"	7/8"	13,300	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
0.045"	7/8"	13,580	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	36	00000000	0000
3/32"	7/8"	13,300	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	46	0000000	0000

Angle Grinder Cutoff Wheels for Cutting and Notching Metal

Side View

Made of premium grade abrasives, these wheels are strong and thick for making notches in aluminum, iron, stainless steel, and steel. They’re reinforced with two layers of fiberglass mesh. Also known as Type 27, raised-hub, and depressed-center cutoff wheels, they outperform Type 1 wheels when making flush cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Wheel Shape	Abrasive	Reinforcement	For Use On	Grit		Each
4 1/2" Dia.
0.09"	5/8"-11	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	00000
0.09"	7/8"	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000

Angle Grinder Cutoff Wheels for Cutting and Deburring Metal

Side View

Switch between cutting and deburring aluminum, iron, stainless steel, and steel without the need to change your wheel. Three layers of fiberglass mesh reinforce these aluminum oxide wheels. They're also known as Type 27, raised-hub, and depressed-center cutoff wheels, and they outperform Type 1 wheels when making flush cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	For Use On	Grit		Each
4 1/2" Dia.
5/64"	7/8"	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	00000000	00000

Flush-Cut Angle Grinder Cutoff Wheels for Stainless Steel

Side View

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts. They make fast, burr-free cuts in stainless steel. Wheels are reinforced with two layers of fiberglass mesh. Choose coarser grit for fast cuts; choose finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
1/32"	7/8"	13,300	Type 27	Raised Hub	Zirconia Alumina	Fiberglass Mesh	60	00000000	00000
0.045"	7/8"	13,300	Type 27	Raised Hub	Ceramic Alumina	Fiberglass Mesh	60	0000000	0000
3/32"	5/8"-11	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	30	0000000	0000
3/32"	7/8"	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	30	0000000	0000

Angle Grinder Cutoff Wheels for Stainless Steel

Side View

Make fast, burr-free cuts in stainless steel with these ceramic and zirconia alumina wheels. They’re reinforced with two layers of fiberglass mesh. Choose coarser grit for fast cuts; choose finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
0.035"	7/8"	13,300	Type 1	Straight	Zirconia Alumina	Fiberglass Mesh	60	0000000	00000
1/16"	7/8"	13,580	Type 1	Straight	Zirconia Alumina	Fiberglass Mesh	36	0000000	0000

Contaminant-Free Angle Grinder Cutoff Wheels for Stainless Steel

Side View

Prevent corrosion and discoloration on stainless steel—these wheels contain less than 0.1% iron, chloride, and sulfur contaminants. They have an aluminum oxide grit and are reinforced with two layers of fiberglass mesh. Choose coarser grit for fast cuts; choose finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
0.045"	7/8"	13,300	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	60	0000000	00000
1/16"	7/8"	13,300	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	46	0000000	0000

Flush-Cut Contaminant-Free Angle Grinder Cutoff Wheels for Stainless Steel

Side View

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts. They contain less than 0.1% iron, chloride, and sulfur contaminants, so they won't corrode or discolor stainless steel. Wheels are aluminum oxide abrasive that is reinforced with two layers of fiberglass mesh.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
0.045"	7/8"	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	60	00000000	00000

Angle Grinder Cutoff Wheels for Cutting and Notching Stainless Steel

Side View

Made of premium grade of abrasives, these wheels are strong and thick for making notches in stainless steel. They’re reinforced with two layers of fiberglass mesh. Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
0.09"	5/8"-11	13,300	Type 27	Raised Hub	Ceramic Alumina	Fiberglass Mesh	24	0000000	00000
0.09"	7/8"	13,300	Type 27	Raised Hub	Ceramic Alumina	Fiberglass Mesh	24	0000000	0000

Flush-Cut Angle Grinder Cutoff Wheels for Aluminum, Brass, and Copper

Side View

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts. They make quick cuts in soft metal such as aluminum, brass and copper without clogging. Wheels are reinforced with two layers of fiberglass mesh.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
0.045"	5/8"-11	13,580	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	24	0000000	00000
0.045"	7/8"	13,300	Type 27	Raised Hub	Aluminum Oxide	Fiberglass Mesh	46	0000000	0000

Angle Grinder Cutoff Wheels for Aluminum, Brass, and Copper

Side View

Use these clog-resistant wheels to make quick cuts in soft metal such as aluminum, brass, and copper. They are reinforced with two layers of fiberglass mesh. Choose coarser grit for fast cuts; choose finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
0.045"	7/8"	13,300	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	46	0000000	00000
0.045"	7/8"	13,300	Type 1	Straight	Zirconia Alumina	Fiberglass Mesh	60	0000000	0000

Angle Grinder Cutoff Wheels for Hard Metal

Side View

Made of a combination of ceramic alumina and zirconia alumina, these wheels last up to ten times longer than standard cutoff wheels when cutting hard metal such as Inconel, Hastelloy, and tool steel. Wheels are reinforced with two layers of fiberglass mesh.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	For Use On	Grit		Each
4 1/2" Dia.
0.045"	7/8"	13,580	Type 1	Straight	Ceramic Alumina/Zirconia Alumina	Fiberglass Mesh	Inconel, Hastelloy, Tool Steel	36	0000000	00000

Angle Grinder Cutoff Wheels for Masonry and Concrete

Side View

Make cuts in hard, brittle materials such as firebrick, stone, and concrete. Wheels are made of silicon carbide abrasive that is reinforced with a layer of fiberglass mesh.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

For technical drawings and 3-D models, click on a part number.

			Wheel		Material
Thick.	Arbor Hole Size	Max. Speed, rpm	Type	Shape	Abrasive	Reinforcement	Grit		Each
4 1/2" Dia.
1/16"	7/8"	13,580	Type 1	Straight	Silicon Carbide	Fiberglass Mesh	30	0000000	00000