220 Grit Grinding Bits | McMaster-Carr

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Stainless Steel

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For Use With

Grinders for Bits and Burs

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Silicon Carbide

DFARS Specialty Metals

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Less than 20,000 rpm

30,000 rpm to 39,999 rpm

100,000 rpm or greater

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18 Products

Rubber-Cushioned Abrasive Grinding Bits for Metals


Style 1	Style 5	Style 6	Style 7	Style 12

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"	1/4"	35,000	W142	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	000000


				1	1/8"	1/4"	35,000	W144	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	00000
				1	1/8"	1/2"	35,000	W146	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	00000




						1/4" Diameter Shank

						1	1"	1"	34,500	A38	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	00000


						1	1"	2"	15,900	W222	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	00000

Oval

Style

7

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

				7	1/8"	5/16"	35,000	B46	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	000000

Cone

Style

5

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

				5	3/16"	5/16"	35,000	B45	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	000000




						1/4" Diameter Shank

						5	3/4"	1 1/8"	35,000	A5	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	00000


						5	1 1/8"	1 1/8"	33,950	A13	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	00000
						5	1 1/4"	1 1/4"	30,560	A4	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	00000

Flat-Top Cone

Style

6

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

				6	1/8"	1/4"	35,000	B96	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	000000


				6	1/8"	3/8"	35,000	B97	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	00000

Taper

Style

12

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

				12	1/4"	1 1/16"	35,000	A15	Silicon Carbide	Rubber	1 1/2"	220 (Extra Smooth) Silver	00000000	000000

Long-Life Grinding Bits for Nonmetals

Style

1

The diamond abrasive in these bits is extremely hard and lasts longer than tungsten carbide. For longer tool life and improved finish, use a water- or oil-soluble mist or coolant.

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

		Head
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Abrasive Material	Overall Lg.	Grit (Surface Texture)		Each
For Carbide, Ceramics, and Glass







				1/8" Diameter Shank

				1	0.03"	0.08"	100,000	Diamond	2 1/4"	220 (Extra Smooth) Silver	0000000	000000


				1	0.04"	0.08"	100,000	Diamond	2 1/4"	220 (Extra Smooth) Silver	0000000	00000

Long-Life Grinding Bits for Metals

Similar to diamond, boron nitride is harder than aluminum oxide and lasts longer. Bits are also known as jig grinding pins and mandrels.

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

	Head
	Dia.	Lg.	Max. Rotation Speed, rpm	Abrasive Material	Overall Lg.	Grit (Surface Texture)		Each
For Steel, Stainless Steel, and Iron







				1/8" Diameter Shank

				0.03"	0.08"	100,000	Boron Nitride	2 1/4"	220 (Extra Smooth) Silver	0000000	000000


				0.04"	0.08"	100,000	Boron Nitride	2 1/4"	220 (Extra Smooth) Silver	0000000	00000

Spiral-Wound Sanding Rolls

Image of Product. Front orientation. Sanding Rolls. Spiral-Wound Sanding Rolls, Cone.

Cone

As the outer layer wears away, new abrasive is exposed. Also known as cartridge rolls. A shank adapter or tapered spindle with a shank is required (both sold separately). The most common abrasive material, aluminum oxide is hard enough to sand steel and wood. The diameter listed is for the large end of the roll.

Cone—Cone rolls are for use in holes. Unlike tapered rolls, they have a flat surface to allow for a more even finish within internal surfaces.

	Dia.	Lg.	Arbor Hole Dia.	Max. Rotation Speed	Abrasive Material	Abrasive Backing Material	For Use On	For Use With	Grit	Pkg. Qty.		Pkg.
Cone







				For Smooth Finish

				1"	1"	3/16"	Not Rated	Aluminum Oxide	Fabric	Steel, Wood	Grinders for Bits and Burs	220	10	00000000	00000

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