20" Grinding Wheels | McMaster-Carr

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	Diameter Diameter	Show

20"

	Diameter Diameter	Hide

	Thickness Thickness

5/32"

3/16"

	For Use On For Use On

	Grit Grit

	Abrasive Material Abrasive Material

Aluminum Oxide

Silicon Carbide

Zirconia Alumina

	Form Form

	Disc

	Arbor Hole Size Arbor Hole Size

	Mount Type Mount Type

Adhesive

	For Use With For Use With

Floor-Mount Cutoff Saws

Stationary Disc Sanders

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

DFARS Specialty Metals
COTS-Exempt

	Abrasive Backing Material Abrasive Backing Material

Fabric

Paper

	Disc Shape Disc Shape

	Flat

	Sanding Properties Sanding Properties

Clog Resistant

Tear Resistant

Water Resistant

	Arbor Hole Shape Arbor Hole Shape

	Round

	Arbor Hole Arbor Hole

Unthreaded

	For Finish For Finish

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Wheel Type Wheel Type

	Type 1

	Maximum Speed Maximum Speed

Less than 10,000 rpm

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Reinforcement Material Reinforcement Material

Fiberglass Mesh

	Wheel Shape Wheel Shape

Straight

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17 Products

About Sanding Abrasives

Adhesive-Back Sanding Discs

Press onto a compatible sanding tool or backup pad (sold separately); peel off to remove. Also known as PSA discs. To maintain strong adhesion, clean the pad surface with mild alcohol before applying. Do not use aggressive cleaning solvents such as MEK or acetone, which can damage the adhesive.

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

Cloth Abrasive Backing
Dia.	Abrasive Material	Sanding Properties	For Use On	For Use With	Choose a Grit	Pkg. Qty.		Pkg.
For Rough Finish
20"	Aluminum Oxide	Tear Resistant	Steel, Wood	Stationary Disc Sanders	36, 40, 50, 60, 80	5	00000000	000000
For Smooth Finish
20"	Aluminum Oxide	Tear Resistant	Steel, Wood	Stationary Disc Sanders	100, 120, 180, 220	5	00000000	00000
For Extra Smooth Finish
20"	Aluminum Oxide	Tear Resistant	Steel, Wood	Stationary Disc Sanders	240, 320, 400	5	00000000	00000

Clog-Resistant Adhesive-Back Sanding Discs

A coating prevents dust and debris from building up on the abrasive surface. Press these discs onto a compatible sanding tool or backup pad (sold separately); peel off to remove. Also known as PSA discs. To maintain strong adhesion, clean the pad surface with mild alcohol before applying. Do not use aggressive cleaning solvents such as MEK or acetone, which can damage the adhesive.

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

Cloth Abrasive Backing
Dia.	Abrasive Material	Sanding Properties	For Use On	For Use With	Choose a Grit	Pkg. Qty.		Pkg.
For Rough Finish
20"	Aluminum Oxide	Clog Resistant, Tear Resistant	Steel, Wood	Stationary Disc Sanders	40, 60, 80	1	00000000	000000
For Smooth Finish
20"	Aluminum Oxide	Clog Resistant, Tear Resistant	Steel, Wood	Stationary Disc Sanders	100, 120, 180	1	00000000	00000

Adhesive-Back Sanding Discs for Stainless Steel and Hard Metals

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

Cloth Abrasive Backing
Dia.	Abrasive Material	Sanding Properties	For Use On	For Use With	Choose a Grit	Pkg. Qty.		Pkg.
For Rough Finish
20"	Zirconia Alumina	Tear Resistant	Stainless Steel, Titanium, Steel, Iron, Nickel	Stationary Disc Sanders	36, 40, 50, 60, 80	1	000000000	000000
For Smooth Finish
20"	Zirconia Alumina	Tear Resistant	Stainless Steel, Titanium, Steel, Iron, Nickel	Stationary Disc Sanders	120	1	00000000	00000

Adhesive-Back Sanding Discs for Aluminum, Soft Metals, and Nonmetals

Discs with paper abrasive backing come on a roll.

Water-resistant discs resist deterioration when used wet.

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

Paper Abrasive Backing
Dia.	Abrasive Material	Sanding Properties	For Use On	For Use With	Grit	Pkg. Qty.		Pkg.
For Rough Finish
20"	Silicon Carbide	Water Resistant	Aluminum, Brass, Bronze, Copper, Plastic, Rubber	Stationary Disc Sanders	60	5	00000000	000000
20"	Silicon Carbide	Water Resistant	Aluminum, Brass, Bronze, Copper, Plastic, Rubber	Stationary Disc Sanders	80	5	00000000	00000
For Smooth Finish
20"	Silicon Carbide	Water Resistant	Aluminum, Brass, Bronze, Copper, Plastic, Rubber	Stationary Disc Sanders	120	5	00000000	00000
20"	Silicon Carbide	Water Resistant	Aluminum, Brass, Bronze, Copper, Plastic, Rubber	Stationary Disc Sanders	180	5	00000000	00000
For Extra Smooth Finish
20"	Silicon Carbide	Water Resistant	Aluminum, Brass, Bronze, Copper, Plastic, Rubber	Stationary Disc Sanders	240	5	00000000	00000
20"	Silicon Carbide	Water Resistant	Aluminum, Brass, Bronze, Copper, Plastic, Rubber	Stationary Disc Sanders	400	5	00000000	00000
For Polished Finish
20"	Silicon Carbide	Water Resistant	Aluminum, Brass, Bronze, Copper, Plastic, Rubber	Stationary Disc Sanders	600	5	00000000	00000

Floor-Mount Cutoff Saw Wheels for Metal

Side View

Use these wheels to cut through metal such as 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
20" Dia.
3/16"	1"	3,065	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	30	0000000	000000

Long-Life Floor-Mount Cutoff Saw Wheels for Metal

Side View

Two layers of fiberglass mesh reinforcement give these fast-cutting, zirconia alumina wheels at least three times the life of standard cutoff wheels when cutting aluminum, iron, stainless steel, and steel. They are not for use on hand-held saws.

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
20" Dia.
5/32"	1"	2,710	Type 1	Straight	Zirconia Alumina	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	24	0000000	000000

Floor-Mount Cutoff Saw Wheels for Ductile Cast Iron

Side View

These wheels have a blend of aluminum oxide and silicon carbide abrasives for cutting ductile cast iron. Wheels are reinforced with a layer of fiberglass mesh. They are not for use on hand-held saws.

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
20" Dia.
3/16"	1"	3,800	Type 1	Straight	Zirconia Alumina	Fiberglass Mesh	24	0000000	000000