90 grit Grinding Wheels | McMaster-Carr

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36 Products

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







				15/16" Diameter

				0.025"	1/16"	30,000	Type 1	Straight	Aluminum Oxide	—	90	50	1257A74	000000


				0.04"	1/16"	30,000	Type 1	Straight	Aluminum Oxide	—	90	25	1257A75	00000




						1 1/4" Diameter

						0.049"	1/16"	30,000	Type 1	Straight	Aluminum Oxide	Fiberglass Mesh	90	10	1257A76	00000


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




								1 1/2" Diameter

								0.025"	1/16"	21,000	Type 1	Straight	Aluminum Oxide	—	90	12	1257A87	00000


								0.04"	1/16"	21,000	Type 1	Straight	Aluminum Oxide	—	90	12	1257A88	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	Includes	Pkg. Qty.		Pkg.
For Ceramics







				7/8" Diameter

				0.024"	1/16"	20,000	Type 1	Straight	Diamond	90	1/8" Shank Dia. Arbor	1	7683N11	000000

Rubber-Cushioned Abrasive Grinding Bits for Metals


Style 1	Style 2	Style 3	Style 4	Style 5	Style 9	Style 10	Style 11

The abrasive grains in these bits are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits. Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.

Caution: As bit shank is exposed beyond _1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.

Cylinder

Style

1

For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Grit (Surface Texture)		Each
For Aluminum, Brass, and Bronze







				1/8" Diameter Shank

				1	1/8"	3/8"	105,000	W145	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A811	000000


				1	3/16"	1/2"	70,500	W154	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A821	00000
				1	1/4"	1/4"	81,370	W160	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A831	00000
				1	1/4"	1/2"	60,000	W163	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A841	00000
				1	1/4"	3/4"	45,900	W164	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A851	00000
				1	3/8"	3/8"	54,000	W175	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A861	00000
				1	3/8"	1"	26,250	W178	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A871	00000
				1	1/2"	3/8"	41,020	W184	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A881	00000
				1	1/2"	1/2"	34,500	W185	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A891	00000




						1/4" Diameter Shank

						1	3/8"	1/2"	81,000	W176	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A816	00000


						1	1/2"	1/2"	61,500	W185	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A826	00000
						1	1/2"	1"	40,500	W187	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A836	00000
						1	3/4"	1"	34,500	W205	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A846	00000
						1	1"	1"	25,500	W220	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A856	00000
						1	2"	1"	19,100	W242	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A866	00000

Barrel

Style

9

For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Grit (Surface Texture)		Each
For Aluminum, Brass, and Bronze







				1/4" Diameter Shank

				9	1/4"	3/4"	76,500	A24	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A886	000000

Cone


Style 5	Style 10	Style 11

For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Grit (Surface Texture)		Each
For Aluminum, Brass, and Bronze







				1/4" Diameter Shank

				5	3/8"	3/4"	81,000	B52	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A896	000000


				5	1/2"	3/4"	61,120	B42	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A916	00000
				5	11/16"	1 1/4"	48,000	A12	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A926	00000
				10	7/8"	2"	19,860	A11	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A936	00000
				11	1"	2 3/4"	16,100	A3	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A946	00000

Inverted Cone

Style

3

For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Grit (Surface Texture)		Each
For Aluminum, Brass, and Bronze







				1/8" Diameter Shank

				3	5/16"	3/8"	68,400	B104	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A931	000000

Taper

Style

2

For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Grit (Surface Texture)		Each
For Aluminum, Brass, and Bronze







				1/8" Diameter Shank

				2	1/4"	5/8"	60,000	B53	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A921	000000

Ball

Style

4

For Aluminum, For Brass, and For Bronze—Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Grit (Surface Texture)		Each
For Aluminum, Brass, and Bronze







				1/8" Diameter Shank

				4	3/16"	3/16"	104,250	B123	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A911	000000




						1/4" Diameter Shank

						4	1/2"	1/2"	76,390	B121	Silicon Carbide	Rubber	1 1/2"	90 (Smooth) Black	4919A876	00000

Cutoff Saw Wheels for Metallurgical Testing


	Side View

Create the nearly polished finish required for testing metal with these non-reinforced aluminum oxide wheels. 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.

						Grinding Wheel
	Thk.	For Hardness	Arbor Hole Size	Arbor Hole Shape	Max. Rotation Speed, rpm	Designation	Shape	Abrasive Material	For Use On	Grit		Each
9" Diameter



		0.063"	Rockwell C30 to Rockwell C40	1 1/4"	Round	4,025	Type 1	Straight	Aluminum Oxide	Iron, Stainless Steel, Steel	90	4170A13	000000


		10" Diameter



				0.063"	Rockwell C30 to Rockwell C40	1 1/4"	Round	3,500	Type 1	Straight	Aluminum Oxide	Iron, Stainless Steel, Steel	90	4170A16	00000


				12" Diameter



						0.078"	Rockwell C40 to Rockwell C55	1 1/4"	Round	3,820	Type 1	Straight	Aluminum Oxide	Iron, Stainless Steel, Steel	90	4170A18	00000


						0.078"	Rockwell C55 to Rockwell C68	1 1/4"	Round	3,820	Type 1	Straight	Aluminum Oxide	Stainless Steel, Steel	90	4170A17	00000

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The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)