Rubber-Bonded Abrasive Points | McMaster-Carr

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20,000 rpm to 29,999 rpm

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151 Products

Rubber-Cushioned Abrasive Grinding Bits for Metals


Style 1	Style 2	Style 3	Style 4	Style 5	Style 6	Style 7	Style 8	Style 9	Style 10	Style 11	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 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







				1/8" Diameter Shank

				1	1/8"	1/4"	35,000	W142	Aluminum Oxide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A674	000000


				1	1/8"	1/4"	35,000	W144	Aluminum Oxide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A668	00000
				1	1/8"	3/8"	105,000	W145	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A311	0000
				1	1/8"	1/2"	35,000	W146	Aluminum Oxide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A646	00000
				1	3/16"	1/2"	70,500	W154	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A312	0000
				1	1/4"	1/4"	81,370	W160	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A313	0000
				1	1/4"	1/2"	60,000	W163	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A314	0000
				1	1/4"	3/4"	45,900	W164	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A461	00000
				1	3/8"	3/8"	54,000	W175	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A316	0000
				1	3/8"	1"	26,250	W178	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A317	00000
				1	1/2"	3/8"	41,020	W184	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A319	00000


				1	1/2"	1/2"	34,500	W185	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A321	00000




						1/4" Diameter Shank

						1	3/8"	1/2"	81,000	W176	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A381	00000


						1	1/2"	1/2"	61,500	W185	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A531	00000
						1	1/2"	1"	40,500	W187	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A561	00000
						1	1/2"	2"	24,000	W189	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver	4919A221	00000
						1	3/4"	1"	34,500	W205	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A565	00000
						1	3/4"	2"	18,750	W208	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver	4919A645	00000
						1	1"	1"	25,500	W220	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A472	00000
						1	1"	1"	34,500	A38	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A601	00000
						1	1"	2"	15,900	W222	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A647	00000
						1	2"	1"	19,100	W242	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A571	00000


						For Aluminum, Brass, and Bronze







										1/8" Diameter Shank

										1	1/8"	1/4"	35,000	W142	Silicon Carbide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A979	00000


										1	1/8"	1/4"	35,000	W144	Silicon Carbide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A807	00000
										1	1/8"	3/8"	105,000	W145	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A811	00000
										1	1/8"	1/2"	35,000	W146	Silicon Carbide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A714	00000
										1	3/16"	1/2"	70,500	W154	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A821	00000
										1	1/4"	1/4"	81,370	W160	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A831	00000
										1	1/4"	1/2"	60,000	W163	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A841	00000
1										1/4"	3/4"	45,900	W164	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A851	00000
1	3/8"									3/8"	54,000	W175	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A861	00000
1	3/8"									1"	26,250	W178	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A871	00000
1	1/2"									3/8"	41,020	W184	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A881	00000


1	1/2"	1/2"	34,500							W185	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A891	00000




		1/4" Diameter Shank

		1	3/8"							1/2"	81,000	W176	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A816	00000


		1	1/2"							1/2"	61,500	W185	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A826	00000
		1	1/2"							1"	40,500	W187	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A836	00000
		1	3/4"							1"	34,500	W205	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A846	00000
		1	1"							1"	25,500	W220	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A856	00000
		1	1"							1"	34,500	A38	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A701	00000
		1	1"							2"	15,900	W222	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A796	00000
		1	2"							1"	19,100	W242	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A866	00000

Barrel

Style

9

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	4919A173	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	4919A886	00000

Oval

Style

7

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







				1/8" Diameter Shank

				7	1/8"	5/16"	35,000	B46	Aluminum Oxide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A607	000000


				For Aluminum, Brass, and Bronze







								1/8" Diameter Shank

								7	1/8"	5/16"	35,000	B46	Silicon Carbide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A703	00000

Cone


Style 5	Style 10	Style 11

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







				1/8" Diameter Shank

				5	3/16"	5/16"	35,000	B45	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A602	000000




						1/4" Diameter Shank

						5	3/8"	3/4"	81,000	B52	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A323	00000


						5	1/2"	3/4"	61,120	B42	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A322	00000
						5	11/16"	1 1/4"	48,000	A12	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A172	00000
						5	3/4"	1 1/8"	35,000	A5	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A542	00000
						5	1 1/8"	1 1/8"	33,950	A13	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A557	00000
						5	1 1/4"	1 1/4"	30,560	A4	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A558	00000
						10	7/8"	2"	19,860	A11	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A171	00000
						11	1"	2 3/4"	16,100	A3	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A351	00000


						For Aluminum, Brass, and Bronze







										1/8" Diameter Shank

										5	3/16"	5/16"	35,000	B45	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A702	00000




												1/4" Diameter Shank

												5	3/8"	3/4"	81,000	B52	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A896	00000


												5	1/2"	3/4"	61,120	B42	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A916	00000
												5	11/16"	1 1/4"	48,000	A12	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A926	00000
												5	3/4"	1 1/8"	35,000	A5	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A676	00000
												5	1 1/8"	1 1/8"	33,950	A13	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A688	00000
												5	1 1/4"	1 1/4"	30,560	A4	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A694	00000
												10	7/8"	2"	19,860	A11	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A936	00000
												11	1"	2 3/4"	16,100	A3	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A946	00000

Flat-Top Cone

Style

6

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







				1/8" Diameter Shank

				6	1/8"	1/4"	35,000	B96	Aluminum Oxide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A634	000000


				6	1/8"	3/8"	35,000	B97	Aluminum Oxide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A619	00000


				For Aluminum, Brass, and Bronze







								1/8" Diameter Shank

								6	1/8"	1/4"	35,000	B96	Silicon Carbide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A712	00000


								6	1/8"	3/8"	35,000	B97	Silicon Carbide	Rubber	1 1/2"	80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A708	00000

Inverted Cone

Style

3

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







				1/8" Diameter Shank

				3	5/16"	3/8"	68,400	B104	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A325	000000


				For Aluminum, Brass, and Bronze







								1/8" Diameter Shank

								3	5/16"	3/8"	68,400	B104	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A931	00000

Taper


Style 2	Style 12

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







				1/8" Diameter Shank

				2	1/4"	5/8"	60,000	B53	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A324	000000




						1/4" Diameter Shank

						12	1/4"	1 1/16"	35,000	A15	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 180 (Smooth) Silver	4919A584	00000


						For Aluminum, Brass, and Bronze







										1/8" Diameter Shank

										2	1/4"	5/8"	60,000	B53	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A921	00000




												1/4" Diameter Shank

												12	1/4"	1 1/16"	35,000	A15	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Silver, 80 (Smooth) Silver, 120 (Smooth) Silver, 220 (Extra Smooth) Silver	4919A697	00000

Ball

Style

4

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







				1/8" Diameter Shank

				4	3/16"	3/16"	104,250	B123	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A327	000000


				4	3/8"	3/8"	35,000	B122	Aluminum Oxide	Rubber	1 1/2"	80 (Smooth) Silver	4919A683	00000




						1/4" Diameter Shank

						4	1/2"	1/2"	76,390	B121	Aluminum Oxide	Rubber	1 1/2"	46 (Rough) Brown, 70 (Smooth) Black, 120 (Smooth) Green, 180 (Smooth) Red	4919A326	00000


						For Aluminum, Brass, and Bronze







										1/8" Diameter Shank

										4	3/16"	3/16"	104,250	B123	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A911	00000




												1/4" Diameter Shank

												4	1/2"	1/2"	76,390	B121	Silicon Carbide	Rubber	1 1/2"	46 (Rough) Brown, 90 (Smooth) Black, 120 (Smooth) Green, 240 (Extra Smooth) Red	4919A876	00000

Pear Shape

Style

8

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

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







				1/8" Diameter Shank

				8	3/8"	1/2"	35,000	B112	Aluminum Oxide	Rubber	1 1/2"	80 (Smooth) Silver	4919A673	000000

Rubber-Cushioned Abrasive Grinding Bits without Shank for Metals


Style 1	Style 2	Style 3	Style 4	Style 5

Bits attach to shanks so you can quickly switch head shapes without removing the shank. The abrasive grains are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits.

Bits are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup. 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	Style 5

	Bits												Grinding Bit Arbors		Wheel Arbors
		Head					Abrasive
	Style	Dia.	Lg.	Arbor Hole Size	Arbor Hole Thread Size	Max. Rotation Speed, rpm	Material	Bond Material	Choose a Grit (Surface Texture)	Pkg. Qty.		Pkg.		Each		Each
For Aluminum, Brass, and Bronze



		1	1/4"	7/8"	—	2-56	20,000	Silicon Carbide	Rubber	46 (Rough) Green, 120 (Smooth) Gray, 180 (Smooth) Red, 240 (Extra Smooth) Blue	10	4777A62	00000	4777A34	00000	———	0


		1	7/8"	1"	—	1/4"-20	20,000	Silicon Carbide	Rubber	46 (Rough) Green, 120 (Smooth) Gray, 180 (Smooth) Red, 240 (Extra Smooth) Blue	1	4777A63	00000	4777A71	00000	———	0


		For Steel, Aluminum, Brass, and Bronze



				5	5/8"	1/4"	1/16"	—	24,000	Aluminum Oxide/Silicon Carbide Blend	Rubber	46 (Rough) Green, 120 (Smooth) Gray-Brown, 180 (Smooth) Red, 240 (Extra Smooth) Blue	1	4826A41	0000	———	0	4770A14	00000


				5	7/8"	1/4"	1/16"	—	24,000	Aluminum Oxide/Silicon Carbide Blend	Rubber	46 (Rough) Green, 120 (Smooth) Gray-Brown, 180 (Smooth) Red, 240 (Extra Smooth) Blue	1	4826A51	0000	———	0	4770A14	0000
				5	1"	1/4"	1/8"	—	20,000	Aluminum Oxide/Silicon Carbide Blend	Rubber	46 (Rough) Green, 120 (Smooth) Gray-Brown, 180 (Smooth) Red, 240 (Extra Smooth) Blue	1	4826A61	0000	———	0	4770A15	0000
				5	1 1/2"	1/2"	1/4"	—	15,000	Aluminum Oxide/Silicon Carbide Blend	Rubber	46 (Rough) Green, 120 (Smooth) Gray-Brown, 180 (Smooth) Red, 240 (Extra Smooth) Blue	1	4824A81	00000	———	0	4770A11	00000
				5	2"	3/8"	1/4"	—	10,500	Aluminum Oxide/Silicon Carbide Blend	Rubber	46 (Rough) Green, 120 (Smooth) Gray-Brown, 180 (Smooth) Red, 240 (Extra Smooth) Blue	1	4824A82	00000	———	0	4770A11	00000
				5	3"	1/2"	1/4"	—	7,000	Silicon Carbide	Rubber	46 (Rough) Green, 120 (Smooth) Gray-Brown, 180 (Smooth) Red, 240 (Extra Smooth) Blue	1	4824A83	00000	———	0	4770A11	00000

Cone


Style 3	Style 4

	Bits										Grinding Bit Arbors
		Head				Abrasive
	Style	Dia.	Lg.	Arbor Hole Thread Size	Max. Rotation Speed, rpm	Material	Bond Material	Choose a Grit (Surface Texture)		Each		Each
For Aluminum, Brass, and Bronze



		3	7/8"	1 1/4"	1/4"-20	20,000	Silicon Carbide	Rubber	46 (Rough) Green, 120 (Smooth) Gray, 180 (Smooth) Red, 240 (Extra Smooth) Blue	4777A64	000000	4777A71	000000


		4	7/8"	1 1/4"	1/4"-20	20,000	Silicon Carbide	Rubber	46 (Rough) Green, 120 (Smooth) Gray, 180 (Smooth) Red, 240 (Extra Smooth) Blue	4777A65	00000	4777A71	00000

Taper

Style

2

	Bits											Grinding Bit Arbors
		Head				Abrasive
	Style	Dia.	Lg.	Arbor Hole Thread Size	Max. Rotation Speed, rpm	Material	Bond Material	Choose a Grit (Surface Texture)	Pkg. Qty.		Pkg.		Each
For Aluminum, Brass, and Bronze



		2	9/32"	1"	2-56	20,000	Silicon Carbide	Rubber	46 (Rough) Green, 120 (Smooth) Gray, 180 (Smooth) Red, 240 (Extra Smooth) Blue	10	4777A61	00000	4777A34	00000


		2	3/8"	5/8"	2-56	20,000	Silicon Carbide	Rubber	46 (Rough) Green, 120 (Smooth) Gray, 180 (Smooth) Red, 240 (Extra Smooth) Blue	10	4777A66	0000	4777A34	0000
		2	3/8"	1"	5-40	20,000	Silicon Carbide	Rubber	46 (Rough) Green, 120 (Smooth) Gray, 180 (Smooth) Red, 240 (Extra Smooth) Blue	10	4777A67	00000	4777A36	0000

Rubber-Cushioned Abrasive Grinding Bit Sets for Metals

Image of Product. Front orientation. Grinding Bits. Rubber-Cushioned Abrasive Grinding Bit Sets for Metals.

The bits in this set have rubber blended into the abrasive, which cushions during grinding to produce a smooth to extra-smooth surface texture.

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.

Aluminum oxide bits are for grinding hard metals.

Silicon carbide bits are for grinding soft metals.

				Abrasive
	No. of Pieces	Includes	Max. Rotation Speed, rpm	Material	Bond Material	Grit (Surface Texture)		Each
For Steel, Aluminum, Brass, and Bronze



		126	30 Silicon Carbide and 10 Aluminum Oxide 15/16" Lg. × 1/4" Dia. Bits; 30 Silicon Carbide and 10 Aluminum Oxide 7/8" Dia. Tapered-Edge Discs; 30 Silicon Carbide and 10 Aluminum Oxide 7/8" Dia. × 1/8" Thick Straight Discs; Four 1/8" Dia. Mandrels; Two Spiral Mandrels with Hex Nut; Paper and Plastic Case	21,000	Aluminum Oxide, Silicon Carbide	Rubber	120 (Smooth) to 240 (Extra Smooth)	4772A16	000000


		For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, and Titanium



				68	8 each: No. 4, No. 6, No. 8, No. 10, No. 11, No. 12, No. 14, and No. 15 Grinding Bits; Two No. 4 Mandrels; Two No. 6 Mandrels; Plastic case	25,000	Silicon Carbide	Rubber	46 (Rough) to 240 (Extra Smooth)	4772A13	000000


				For Steel, Aluminum, Brass, Copper, and Stainless Steel



						24	8 each A2, A25, W220 Grinding Bits with 1 1/2" Lg. × 1/4" Dia. Shank; Cardboard Block Stand	25,500	Aluminum Oxide	Rubber	46 (Rough) to 100 (Smooth)	4772A17	000000


						36	12 each: B52, B121, W185 Grinding Bits with 1 1/2" Lg. × 1/8" Dia. Shank; Cardboard Block Stand	34,500	Aluminum Oxide	Rubber	46 (Rough) to 100 (Smooth)	4772A14	000000


						For Steel, Brass, Bronze, Copper, Stainless Steel, Iron, Nickel, and Titanium



								63	15 each: B52, W154, W164, W185 Grinding Bits with 1 1/2" Lg. × 1/8" Dia. Shank; One W220 Grinding Bit with 1 1/2" Lg. × 1/4" Dia. Shank; Two W179 Grinding Bits with 1 1/2" Lg. × 1/4" Dia. Shank; Plastic case	25,500	Aluminum Oxide	Rubber	46 (Rough) to 180 (Smooth)	4772A18	000000

Grinding Bit Sets for Metals

Image of Product. Front orientation. Grinding Bits. Grinding Bit Sets for Metals .

Each set contains a selection of grinding bits. All include bits made of aluminum oxide, which is the most common abrasive used for grinding metal. These bits are also known as mounted points and die grinder bits.

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.

For Steel, For Stainless Steel, For Aluminum, For Brass, For Bronze, For Copper, For Iron, and For Nickel—Sets for steel, stainless steel, aluminum, brass, bronze, copper, iron, and nickel contain bits made from a range of abrasive materials in different shapes and sizes. They’ll help you achieve varying levels of finish on a wide range of materials. Cotton laminate/aluminum oxide blend bits remove more material than rubber-cushioned aluminum oxide bits, and they’ll create a nicer finish than vitrified ceramic alumina bits. Bits with nylon mesh remove the least material but create the nicest finish.

			Abrasive
	No. of Pieces	Includes	Material	Bond Material	Shank Lg.	Color	Grit (Surface Texture)		Each
For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, and Nickel







				1/8" Diameter Shank

				72	Cardboard Block Stand; B121 (14 total, 60-240 grit); B132 (9 total, 60-80 grit); B52 (16 total, 60-240 grit); W154 (9 total, 60-100 grit); W182 (9 total, 60-80 grit); W185 (15 total, 60-240 grit)	Aluminum Oxide, Aluminum Oxide/Cotton Laminate Blend, Ceramic, Nylon Mesh/Aluminum Oxide, Nylon Mesh/Silicon Carbide	Rubber, Synthetic Resin, Vitrified Ceramic	1 1/2"	Black, Blue, Brown, Gray, Pink, White	60 (Rough), 80 (Smooth), 100 (Smooth)	6165A16	0000000

Grinding Bit Arbors for Rubber-Cushioned Abrasive Bits

Image of System. Front orientation. Contains Annotated. Grinding Bit Arbors.

Thread rubber-cushioned grinding bits onto one of these arbors and switch between bits without removing the arbor from your tool. Arbors are also known as mandrels.

	Shank
For Arbor Hole Thread Size	Dia.	Lg.	Overall Lg.		Each
1/4"-20	1/4"	7/8"	2"	4777A71	000000
2-56	1/8"	1 1/2"	2"	4777A34	0000
5-40	1/8"	1 1/2"	2"	4777A36	0000

Cotton-Laminate Grinding Bits for Metals


Style 1	Style 2	Style 3	Style 4	Style 5	Style 6

Made of cotton fiber layers embedded with aluminum-oxide grains, these bits grind and finish in one step. They’re ideal for light deburring, blending, and finishing metal. These grinding bits remove material more efficiently than rubber-cushioned bits. While grinding, they resist the buildup of aluminum, brass, bronze, and other nonferrous metal. They’re 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	Style 4

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Choose a Grit (Surface Texture)		Each
For Steel, Stainless Steel, Aluminum, Brass, Copper, Iron, Nickel, and Titanium







				1/8" Diameter Shank

				1	3/16"	1/2"	66,580	W154	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray, 120 (Smooth) Blue-Gray	4806N25	00000


				1	1/4"	1/2"	59,990	W163	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray, 120 (Smooth) Blue-Gray	4806N23	0000
				1	1/4"	3/4"	45,900	W164	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray, 120 (Smooth) Blue-Gray	4806N21	0000
				1	3/8"	1/2"	45,370	W176	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray, 120 (Smooth) Blue-Gray	4806N19	0000
				1	3/8"	3/4"	33,750	W177	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N171	0000
				1	1/2"	1/2"	34,500	W185	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray, 120 (Smooth) Blue-Gray	4806N15	0000




						1/4" Diameter Shank

						1	1/2"	1"	36,950	W187	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N131	0000


						1	1"	1"	25,500	W220	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N111	00000
						4	3/4"	3/32"	33,750	—	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	54 (Rough) Blue-Gray, 80 (Smooth) Blue-Gray	4806N27	0000

Disc

Image of Product. Side1 orientation. Grinding Bits. Cotton-Laminate Grinding Bits for Metals , Style 6.

Style 6

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







				1/4" Diameter Shank

				6	1 5/8"	3/8"	23,510	A36	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N371	000000

Cone


Style 3	Style 5

		Head				Abrasive
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape No.	Material	Bond Material	Shank Lg.	Choose a Grit (Surface Texture)		Each
For Steel, Stainless Steel, Aluminum, Brass, Copper, Iron, Nickel, and Titanium







				1/8" Diameter Shank

				3	3/8"	3/4"	45,370	B52	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray, 120 (Smooth) Blue-Gray	4806N29	00000


				3	1/2"	3/4"	33,750	B42	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray, 120 (Smooth) Blue-Gray	4806N31	0000




						1/4" Diameter Shank

						3	11/16"	1 1/4"	38,050	A12	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N431	00000


						3	7/8"	2"	19,860	A11	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N451	00000
						5	1"	2 3/4"	15,530	A3	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N391	00000

Ball

Style

2

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







				1/8" Diameter Shank

				2	3/8"	3/8"	61,650	B122	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N331	00000


				2	1/2"	1/2"	45,370	B121	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N351	0000




						1/4" Diameter Shank

						2	1"	1"	35,510	A25	Aluminum Oxide/Cotton Laminate Blend	Rubber	1 1/2"	80 (Smooth) Blue-Gray	4806N411	00000

Miniature Rubber-Cushioned Abrasive Grinding Bits for Metals


Style 1	Style 2	Style 3	Style 4

Produce a smooth surface on precise, intricate grinding jobs. These bits are cushioned by rubber, so they create a smoother finish than other bits with similar grits. Made with a diamond abrasive, they last 10 to 20 times longer than rubber-cushioned bits without diamond. Their _3/32" diameter shank and small head allow them to get into intricate spots. 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.

		Head				Abrasive			120 (Smooth) Green		320 (Extra Smooth) Blue		1000 (Extra Smooth) Yellow
	Style	Dia.	Lg.	Max. Rotation Speed, rpm	Shape	Material	Bond Material	Shank Lg.		Each		Each		Each
For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, and Titanium







				3/32" Diameter Shank

				1	7/32"	1/2"	21,000	Cone	Diamond	Rubber	1 1/4"	5619N14	000000	5619N21	000000	5619N27	000000


				2	19/32"	3/16"	21,000	Disc	Diamond	Rubber	1 1/2"	5619N15	00000	5619N22	00000	5619N28	00000
				3	19/32"	1/4"	15,000	Cylinder	Diamond	Rubber	1 1/2"	5619N16	00000	5619N23	00000	5619N29	00000
				4	11/16"	1/8"	21,000	Cylinder	Diamond	Rubber	1 1/2"	5619N13	00000	5619N19	00000	5619N26	00000
				4	1 1/32"	1/16"	21,000	Cylinder	Diamond	Rubber	1 1/2"	5619N12	00000	5619N18	00000	5619N25	00000
				4	1 1/32"	3/32"	15,000	Cylinder	Diamond	Rubber	1 1/2"	5619N11	00000	5619N17	00000	5619N24	00000

Rotary Tool Chucks

Image of Product. Front orientation. Rotary Tool Chucks.

A rotary tool chuck connects these bits to rotary tools that accept a _1/8" shank diameter. Swap out accessories on your Dremel without tools.

For Shank Dia.	Mfr. Model No.	For Mfr. Model No.	Mounting Hole Thread Size	Body Material	Jaw Material		Each
1/32" to 1/8"	4486	100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 8220	1/4"-40	Steel	Steel	4344A38	000000

Long-Life Rubber-Cushioned Abrasive Grinding Bits for Metals

Image of Product. Side1 orientation. Grinding Bits. Long-Life Rubber-Cushioned Abrasive Grinding Bits for Metals.

A diamond abrasive that's bonded to a rubber cushioning makes these bits last 10 to 20 times longer than rubber-cushioned bits without diamond. Because they’re cushioned during grinding, these bits produce a smoother surface texture than other bits with similar grits. 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.

	Head				Abrasive			180 (Smooth) Green		320 (Extra Smooth) Blue		1000 (Extra Smooth) Yellow
	Dia.	Lg.	Max. Rotation Speed, rpm	Shape	Material	Bond Material	Shank Lg.		Each		Each		Each
For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, and Titanium







				1/8" Diameter Shank

				11/16"	1/8"	15,000	Cylinder	Diamond	Rubber	1 1/2"	4859N13	000000	4859N16	000000	4859N19	000000


				1"	5/64"	15,000	Cylinder	Diamond	Rubber	1 1/2"	4859N12	00000	4859N15	00000	4859N18	00000
				1"	3/32"	15,000	Cylinder	Diamond	Rubber	1 1/2"	4859N11	00000	4859N14	00000	4859N17	00000

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