A24 Grinding Bits | McMaster-Carr

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30,000 rpm to 99,999 rpm

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4 Products

Grinding Bits for Metals

Style

Made of aluminum oxide, these bits are well suited for use on most metals and materials that are not heat sensitive.

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.

Barrel

Style

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Choose a Grit (Surface Texture)	Pkg. Qty.		Pkg.
For Steel, Stainless Steel, and Iron







				1/4" Diameter Shank

				5	1/4"	3/4"	76,500	A24	Aluminum Oxide	Vitrified Clay	1 1/2"	36 (Rough) Blue-Gray , 60 (Rough) Orange , 120 (Smooth) Blue	5	00000000	000000

Rubber-Cushioned Abrasive Grinding Bits for Metals

Style

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.

Barrel

Style

For Steel—Bits for steel are aluminum oxide, which is the most common abrasive used in grinding metal.

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.	Choose a Grit (Surface Texture)		Each
For Steel







				1/4" Diameter Shank

				9	1/4"	3/4"	76,500	A24	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown , 70 (Smooth) Black , 120 (Smooth) Green , 180 (Smooth) Red	00000000	000000


				For Aluminum, Brass, and Bronze







								1/4" Diameter Shank

								9	1/4"	3/4"	76,500	A24	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown , 90 (Smooth) Black , 120 (Smooth) Green , 240 (Extra Smooth) Red	00000000	00000

Hex-Shank Grinding Bits for Metals


Style 3	Hex Shank

Use bits in any drill chuck that accepts a _1/4" hex shank.

Bits are aluminum oxide, which is the most common abrasive used in grinding metal. They are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.

Barrel


Style 3	Hex Shank

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







				1/4" Hex Shank

				3	1/4"	3/4"	76,500	A24	Aluminum Oxide	Vitrified Ceramic	1 1/2"	60 (Rough) Gray	0000000	00000