Bench Grinder Mandrels | McMaster-Carr

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	For Shaft Type For Shaft Type


Straight	Threaded

Tapered

	System of Measurement System of Measurement

Inch

	For Shaft Diameter For Shaft Diameter

	For Use With For Use With	Show

Bench Grinders

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Warning: Products have one, but not necessarily all, of the selected characteristics.

Bench Grinders

Buffers

Dremel Grinders for Bits
and Burs

Drill Presses

Grinders for Bits and Burs

Grinders for Wheels and
Cones

Hand-Held Power Drills

Lathes

Milling Machines

Milwaukee Magnetic-
Base Drills

	For Holding For Holding

	For Arbor Hole Size For Arbor Hole Size

1/4"

3/8"

1/2"

	Overall Length Overall Length

2 1/4"

3 1/2"

4 5/16"

	For Shaft Thread Size For Shaft Thread Size

1/2"-20

5/8"-11

	For Arbor Hole For Arbor Hole

Unthreaded

	Flange Diameter Flange Diameter

3/4"

1 1/4"

1 5/8"

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

DFARS Specialty Metals
COTS-Exempt

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

REACH Compliant

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

RoHS Compliant

	Drum Diameter Drum Diameter

	For Maximum Wheel Thickness For Maximum Wheel Thickness

1/4"

1/2"

1 1/4"

	Drum Length Drum Length

	For Buffer Shaft Location For Buffer Shaft Location

Left Side

Right Side

	Arbor Hole Size Arbor Hole Size

	Arbor Hole Arbor Hole

Unthreaded

Threaded

	Diameter Diameter

	Mount Type Mount Type

Arbor

	For Use On For Use On

	Maximum Speed Maximum Speed

Less than 10,000 rpm

10,000 to 19,999 rpm

20,000 to 29,999 rpm

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35 Products

Threaded Shaft Arbors for Abrasive Wheels and Brushes

Install cutoff wheels, grinding wheels, and other abrasive discs to the threaded shaft on bench-top motors, grinders, and buffers. Arbors are also known as mandrels.

	For Shaft
For Arbor Hole Size	Dia.	Thread Size	Flange Dia.	Overall Lg.		Each
1/2"	5/8"	5/8"-11	1 5/8"	2 1/4"	000000	000000

Straight Shaft Arbors for Abrasive Wheels and Brushes

Mount cutoff wheels, grinding wheels, and other abrasive discs to the straight shaft on bench-top motors, grinders, and buffers. Arbors are also known as mandrels.

For Arbor Hole Size	For Max. Wheel Thick.	For Shaft Dia.	Flange Dia.	Overall Lg.		Each
3/8"	1/2"	1/4"	1 1/4"	2"	00000000	00000
3/8"	1/2"	5/16"	1 1/4"	2"	00000000	0000
3/8"	1/2"	3/8"	1 1/4"	2"	00000000	0000
1/2"	1 1/4"	1/2"	1 5/8"	3 1/2"	00000000	0000
1/2"	1 1/4"	5/8"	1 5/8"	3 1/2"	00000000	0000

Tapered Shaft Arbors for Abrasive Wheels and Brushes

Use these arbors to mount buffing wheels, grinding wheels and other abrasive discs to the tapered shaft on bench-top motors, grinders, and buffers. Arbors are also known as mandrels.

Shafts on the right side of a buffer or grinder rotate the wheel in a counterclockwise direction.

Shafts on the left side of a buffer or grinder rotate the wheel in a clockwise direction.

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

	For Max. Wheel					For Right-Side Shafts		For Left-Side Shafts
For Arbor Hole Size	Arbor Hole Dia.	Thick.	For Shaft Dia.	Flange Dia.	Overall Lg.		Each		Each
1/4"	1/4"	1/4"	3/8"	3/4"	2"	0000000	000000	0000000	000000

Sanding Sleeve Drums for Threaded Shafts

Install a sanding sleeve on the threaded shaft of a bench or pedestal grinder using one of these drums. Slide a sleeve on the drum and tighten the nut to securely hold the sleeve. Drums are required for the use of sanding sleeves.

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

Drum
Dia.	Lg.	For Shaft Dia.	Drum Material	For Shaft Thread Size	Max. Speed, rpm		Each
3"	3"	1/2"	Rubber	1/2"-20	3,000	000000	000000
3"	3"	5/8"	Rubber	5/8"-11	3,000	000000	00000

Sanding Sleeve Drums for Straight Shafts

Mount a sanding sleeve to the straight shaft of a bench or pedestal grinder using one of these drums. Slide a sleeve on the drum and tighten the nut to securely hold the sleeve. Drums are required for the use of sanding sleeves.

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

Drum
Dia.	Lg.	For Shaft Dia.	Drum Material	Max. Speed, rpm	Includes		Each
2"	2"	1/2"	Rubber	6,000	Set Screws	0000000	000000
3"	1"	1/2"	Rubber	3,000	Set Screws	0000000	00000
3"	2"	1/2"	Rubber	3,000	Set Screws	0000000	00000
3"	3"	1/2"	Rubber	3,000	Set Screws	0000000	00000
3"	3"	5/8"	Rubber	3,000	Set Screws	0000000	00000
3"	3"	3/4"	Rubber	3,000	Set Screws	0000000	00000

Buffing Wheel Chucks

Attach to a grinder or buffer shaft to hold buffing wheels with shanks.

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

For Max. Bit Shank Size	For Shaft Dia.		Each
5/32"	3/8"	0000000	000000

Buffing Wheel Spindles for Straight Shafts

Mount to the straight shaft on your grinder or buffer. Twist a buffing wheel directly onto the spindle—centrifugal force holds the wheel in place as it turns.

Shafts on the right side of a buffer or grinder rotate the wheel in a counterclockwise direction.

Shafts on the left side of a buffer or grinder rotate the wheel in a clockwise direction.

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

					For Right-Side Shafts		For Left-Side Shafts
For Shaft Dia.	Taper Lg.	Overall Lg.	For Max. Arbor Hole Size	Includes		Each		Each
3/8"	2 5/8"	4 5/16"	1/2"	Set Screws	00000000	000000	00000000	000000
1/2"	2 5/8"	4 5/16"	1/2"	Set Screws	00000000	00000	00000000	00000
5/8"	2 5/8"	4 5/16"	5/8"	Set Screws	00000000	00000	00000000	00000

Buffing Wheel Spindles for Tapered Shafts

Use one of these spindles to mount buffing wheels to the tapered shaft on your grinder or buffer. Twist the buffing wheel directly onto the spindle—centrifugal force holds the wheel in place as it turns.

Shafts on the right side of a buffer or grinder rotate the wheel in a counterclockwise direction.

Shafts on the left side of a buffer or grinder rotate the wheel in a clockwise direction.

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

				For Right-Side Shafts		For Left-Side Shafts
For Shaft Dia.	Taper Lg.	Overall Lg.	For Max. Arbor Hole Size		Each		Each
3/8"	2"	3 1/2"	1/4"	0000000	000000	0000000	000000

Fast-Cut Straight Grinder Cutoff Wheels for Metal

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
3" Dia.
0.045"	3/8"	27,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	00000
4" Dia.
0.045"	1/4"	22,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
0.045"	5/8"	22,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
0.045"	7/8"	22,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
5" Dia.
0.045"	3/8"	15,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
0.045"	5/8"	15,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
6" Dia.
0.045"	3/8"	14,200	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
0.045"	5/8"	14,200	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
7" Dia.
0.045"	1/2"	10,500	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000
0.045"	5/8"	10,500	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	Aluminum, Iron, Stainless Steel, Steel	60	0000000	0000