1 1/4" Grinding Wheels | McMaster-Carr

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Grinding Wheels

Rotary Tool Cutoff Wheels

Sanding Blocks

System of Measurement

Diameter

For Use On

Arbor Hole Size

Thickness

Grit

Abrasive Material

Grinding Wheel Designation

For Use With

Material

Maximum Rotation Speed

21,000 rpm

25,970 rpm

30,000 rpm

Norton Abrasive Grade

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Color

Gray

Rotation Speed

20,000 rpm to 29,999 rpm

30,000 rpm to 99,999 rpm

REACH

Compliant

Not Compliant

RoHS

Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Grit Rating

Arbor Hole

Grinding Wheel Shape

Abrasive Bond Material

Synthetic Resin

Norton Abrasive Bond

VBE

Norton Abrasive Number

Norton Abrasive Type

6 Products

Internal Diameter Toolroom Grinding Wheels for Metals


Recessed Grinding Wheel

Typically used with cylindrical, surface, and ID grinders, these wheels are specially designed to grind the inside diameter of workpieces. They’re often used to make bearings.

Caution: Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.

							Wheel
	Dia.	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Abrasive Material	Abrasive Bond Material	Designation	Shape	Grit (Surface Texture)	Norton Abrasive Grade		Each
32A Gray—VBE Bond







				For Stainless Steel, Aluminum, and Iron

				1 1/4"	1"	3/8"	25,970	Aluminum Oxide	Synthetic Resin	Type 5	Recessed	60 (Rough)	K	4828N13	00000

Miniature Dremel-Compatible Rotary Tool Cutoff Wheels for Ceramics


	Side View

Made of diamond abrasive, these wheels cut ceramics, tile, and other abrasive materials. Because they’re miniature, they work best to make small, precise cuts. Use them to make plunge cuts in the center of material or to make flush cuts. The higher the grit number, the finer the grit. Choose a coarser grit for fast cuts; choose a finer grit for smooth cuts.

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

				Grinding Wheel
	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Designation	Shape	Abrasive Material	Grit	Pkg. Qty.		Pkg.
For Ceramics







				1 1/4" Diameter

				0.025"	1/16"	21,000	Type 1	Straight	Diamond	220	1	1257A91	000000

Miniature Dremel-Compatible Rotary Tool Cutoff Wheels for Metal


	Side View

Use these wheels to cut through 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.

				Grinding Wheel		Material
	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Designation	Shape	Abrasive	Reinforcement	Grit	Pkg. Qty.		Pkg.
For Aluminum, Iron, Stainless Steel, and Steel







				1 1/4" Diameter

				0.049"	1/16"	30,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	90	10	1257A76	000000


				0.062"	1/16"	21,000	Type 1	Straight	Aluminum Oxide	—	90	12	1257A86	00000

Disc Sanding Blocks


Style B	Style C

Attach sanding discs to these hand sanding blocks.

Style B—Style B have a contoured grip for added comfort and control. They have a small diameter that makes them good for detailing.

Style C—Style C are reversible, so you can attach a sanding disc to either end. One end is firm for material removal, while the other is cushioned for gentle finishing. They have a small diameter that makes them good for detailing.

	For Disc Dia.	Dia.	Material		Each
Adhesive Back



	B	1 1/4"	1 1/4"	Rubber	7729N12	000000


	Adhesive Back—Reversible



			C	1 1/4"	1 1/4"	Rubber	7729N14	00000