Felt Polishing Bobs | McMaster-Carr

Filter by

Material

Shape

Shank Diameter

Head Diameter

For Use On

Hardness Rating

Head Length

Grit

For Finish

Tip Shape

Abrasive Material

Rotation Speed

DFARS Specialty Metals

RoHS

REACH

Export Control Classification Number (ECCN)

EAR99

Maximum Rotation Speed

Grit Rating

Application

Edge Style

151 Products

Polishing Bobs


Cylinder with Flat Tip	Cylinder with Round Tip	Cylinder with Pointed Tip	Ball with Round Tip

Oval with Round Tip	Pear with Round Tip	Cone with Flat Tip	Cone with Round Tip

Tear Drop with Pointed Tip	Disc with Flat Edge

Polish small areas and hard-to-reach spots. Use these bobs with lapping pastes and buffing compounds and a drill or grinder for bits and burs.

Soft—Choose soft bobs for a finer finish.

	Head					Soft		Medium
	Dia.	Lg.	Shank Dia.	Max. Rotation Speed, rpm	Material		Each		Each





				Cylinder with Flat Tip

				1/4"	1/4"	1/8"	20,000	Felt	4811A15	00000	4811A25	00000
				3/8"	1/2"	1/8"	20,000	Felt	4811A16	0000	4811A26	0000
				1/2"	1/2"	1/8"	20,000	Felt	4811A721	0000	4811A69	0000
				1/2"	3/4"	1/8"	20,000	Felt	4811A722	0000	4811A17	0000
				1/2"	1"	1/8"	20,000	Felt	4811A723	0000	4811A27	0000
				3/4"	3/4"	1/8"	20,000	Felt	4811A724	0000	4811A19	0000
				3/4"	1"	1/8"	20,000	Felt	4811A725	0000	4811A21	0000
				1"	1"	1/4"	20,000	Felt	4811A726	0000	4811A23	0000
				1"	2"	1/4"	20,000	Felt	4811A727	0000	4811A28	0000
				1 1/4"	1 1/4"	1/4"	20,000	Felt	4811A728	0000	4811A29	0000


				1 1/2"	1"	1/4"	20,000	Felt	4811A729	00000	4811A24	00000
				1 1/2"	1 1/2"	1/4"	20,000	Felt	4811A731	00000	4811A31	00000




						Cylinder with Round Tip

						1/2"	1"	1/8"	20,000	Felt	4812A727	0000	4812A25	0000
						3/4"	1 1/2"	1/4"	20,000	Felt	4812A728	0000	4812A65	0000
						1"	2"	1/4"	20,000	Felt	4812A729	00000	4812A66	00000




								Cylinder with Pointed Tip

								1/4"	3/4"	3/32"	20,000	Felt	———	0	4812A81	0000
								5/16"	5/8"	3/32"	20,000	Felt	———	0	4812A82	0000




										Ball with Round Tip

										5/16"	3/8"	3/32"	20,000	Felt	———	0	4812A79	0000
										1/2"	1/2"	1/8"	20,000	Felt	4812A731	0000	4812A42	0000
										3/4"	3/4"	1/4"	20,000	Felt	4812A732	0000	4812A67	0000
										1"	1"	1/4"	20,000	Felt	4812A733	00000	4812A68	00000




												Oval with Round Tip

												1/2"	1/2"	1/8"	20,000	Felt	4812A724	0000	4812A18	0000
												3/4"	3/4"	1/8"	20,000	Felt	4812A725	0000	4812A63	0000
												1"	1"	1/4"	20,000	Felt	4812A726	00000	4812A64	00000




														Pear with Round Tip

														1/2"	3/4"	1/8"	20,000	Felt	4812A16	0000	4812A26	0000
3/4"														1"	1/4"	20,000	Felt	4812A17	00000	4812A27	0000
1"	1 1/4"													1/4"	20,000	Felt	4812A19	00000	4812A29	00000




		Cone with Flat Tip

		1/2"	3/4"											1/8"	20,000	Felt	4812A11	0000	4812A21	0000
		3/4"	1"											1/4"	20,000	Felt	4812A13	0000	4812A23	0000
		1"	1 1/4"											1/4"	20,000	Felt	4812A14	00000	4812A24	00000




														Cone with Round Tip

														1/2"	1"	1/8"	20,000	Felt	4812A721	0000	4812A12	0000
														3/4"	1 1/2"	1/4"	20,000	Felt	4812A722	0000	4812A61	0000
														1"	2"	1/4"	20,000	Felt	4812A723	00000	4812A62	00000




				Tear Drop with Pointed Tip

				3/8"	3/4"											3/32"	20,000	Felt	———	0	4812A59	0000




																Disc with Flat Edge

																5/8"	1/4"	3/32"	20,000	Felt	———	0	4812A83	0000
						7/8"										1/4"	3/32"	20,000	Felt	———	0	4812A84	0000
						1"	1/4"									3/32"	20,000	Felt	———	0	4812A85	0000

Aggressive Polishing Bobs


Cylinder with Flat Tip	Cylinder with Round Tip	Cylinder with Pointed Tip	Ball with Round Tip

Oval with Round Tip	Pear with Round Tip	Cone with Flat Tip	Cone with Round Tip

Tear Drop with Pointed Tip	Disc with Flat Edge	Disc with Tapered Edge

Remove scratches from your workpiece with these hard bobs. Use them with lapping pastes and buffing compounds and a drill or grinder for bits and burs.

Extra Hard—Choose extra hard bobs for the most aggressive material removal or when working with hard materials.

	Head					Hard		Extra Hard
	Dia.	Lg.	Shank Dia.	Max. Rotation Speed, rpm	Material		Each		Each





				Cylinder with Flat Tip

				1/4"	1/4"	1/8"	20,000	Felt	4811A51	00000	4811A57	00000
				3/8"	1/2"	1/8"	20,000	Felt	4811A52	0000	4811A58	0000
				1/2"	1/2"	1/8"	20,000	Felt	4811A71	0000	4811A72	0000
				1/2"	3/4"	1/8"	20,000	Felt	4811A37	0000	4811A59	0000
				1/2"	1"	1/8"	20,000	Felt	4811A53	0000	4811A61	0000
				3/4"	3/4"	1/8"	20,000	Felt	4811A39	0000	4811A62	0000
				3/4"	1"	1/8"	20,000	Felt	4811A41	0000	4811A63	0000
				1"	1"	1/4"	20,000	Felt	4811A43	0000	4811A64	0000
				1"	2"	1/4"	20,000	Felt	4811A54	0000	4811A65	0000
				1 1/4"	1 1/4"	1/4"	20,000	Felt	4811A55	0000	4811A66	0000


				1 1/2"	1"	1/4"	20,000	Felt	4811A49	00000	4811A67	00000
				1 1/2"	1 1/2"	1/4"	20,000	Felt	4811A56	00000	4811A68	00000




						Cylinder with Round Tip

						1/2"	1"	1/8"	20,000	Felt	4812A28	0000	4812A53	0000
						3/4"	1 1/2"	1/4"	20,000	Felt	4812A75	0000	4812A54	0000
						1"	2"	1/4"	20,000	Felt	4812A76	00000	4812A55	00000




								Cylinder with Pointed Tip

								1/4"	3/4"	3/32"	20,000	Felt	4812A88	0000	———	0
								5/16"	5/8"	3/32"	20,000	Felt	4812A89	0000	———	0




										Ball with Round Tip

										5/16"	3/8"	3/32"	20,000	Felt	4812A87	0000	———	0
										1/2"	1/2"	1/8"	20,000	Felt	4812A45	0000	4812A56	0000
										3/4"	3/4"	1/4"	20,000	Felt	4812A77	0000	4812A57	0000
										1"	1"	1/4"	20,000	Felt	4812A78	00000	4812A58	00000




												Oval with Round Tip

												1/2"	1/2"	1/8"	20,000	Felt	4812A22	0000	4812A49	0000
												3/4"	3/4"	1/8"	20,000	Felt	4812A73	0000	4812A51	0000
												1"	1"	1/4"	20,000	Felt	4812A74	00000	4812A52	00000




														Pear with Round Tip

														1/2"	3/4"	1/8"	20,000	Felt	4812A34	0000	4812A41	0000
3/4"														1"	1/4"	20,000	Felt	4812A35	0000	4812A43	00000
1"	1 1/4"													1/4"	20,000	Felt	4812A36	00000	4812A44	00000




		Cone with Flat Tip

		1/2"	3/4"											1/8"	20,000	Felt	4812A31	0000	4812A37	0000
		3/4"	1"											1/4"	20,000	Felt	4812A32	0000	4812A38	0000
		1"	1 1/4"											1/4"	20,000	Felt	4812A33	00000	4812A39	00000




														Cone with Round Tip

														1/2"	1"	1/8"	20,000	Felt	4812A15	0000	4812A46	0000
														3/4"	1 1/2"	1/4"	20,000	Felt	4812A71	0000	4812A47	0000
														1"	2"	1/4"	20,000	Felt	4812A72	00000	4812A48	00000




				Tear Drop with Pointed Tip

				3/8"	3/4"											3/32"	20,000	Felt	4812A86	0000	———	0




																Disc with Flat Edge

																5/8"	1/4"	3/32"	20,000	Felt	4812A94	0000	———	0
						7/8"										1/4"	3/32"	20,000	Felt	4812A95	0000	———	0
						1"	1/4"									3/32"	20,000	Felt	4812A96	0000	———	0




																Disc with Tapered Edge

								5/8"								3/16"	3/32"	20,000	Felt	4812A91	0000	———	0
								3/4"	3/16"							3/32"	20,000	Felt	4812A92	0000	———	0
								7/8"	3/16"							3/32"	20,000	Felt	4812A93	0000	———	0

No-Mess Polishing Bobs for Stainless Steel and Hard Metals


Cylinder with Flat Tip	Cylinder with Round Tip	Cone with Round Tip

The long-lasting diamond abrasive is already embedded in these bobs so you don’t need messy compounds. Polish small areas and hard-to-reach spots using a drill or grinder for bits and burs. Grit is approximate.

	Head
	Dia.	Lg.	Shank Dia.	Max. Rotation Speed, rpm	Abrasive Material	Material	For Finish	Choose a Grit		Each
For Stainless Steel, Titanium, Steel, Iron, and Nickel





				Cylinder with Flat Tip

				1/4"	1/4"	1/8"	15,000	Diamond	Felt	Polished	600 , 800 , 1000 , 1200 , 2000	4564A91	00000
				1/2"	1/2"	1/8"	15,000	Diamond	Felt	Polished	600 , 800 , 1000 , 1200 , 2000	4564A92	0000
				3/4"	3/4"	1/8"	15,000	Diamond	Felt	Polished	600 , 800 , 1000 , 1200 , 2000	4564A93	00000




						Cylinder with Round Tip

						3/8"	1/2"	1/8"	15,000	Diamond	Felt	Polished	600 , 800 , 1000 , 1200 , 2000	4564A97	0000




								Cone with Round Tip

								3/8"	1/2"	1/8"	15,000	Diamond	Felt	Polished	600 , 800 , 1000 , 1200 , 2000	4564A94	0000
								1/2"	1"	1/8"	15,000	Diamond	Felt	Polished	600 , 800 , 1000 , 1200 , 2000	4564A95	00000
								3/4"	1 1/2"	1/4"	15,000	Diamond	Felt	Polished	600 , 800 , 1000 , 1200 , 2000	4564A96	00000

No-Mess Polishing Bobs for Aluminum, Soft Metals, and Nonmetals

Cylinder with

Flat Tip—Felt

Cylinder with

Round Tip—Felt

Cone with Round

Tip—Felt

The silicon carbide abrasive cuts quickly with light pressure. It’s embedded in these bobs so you don’t need messy compounds. Polish small areas and hard-to-reach spots using a drill or grinder for bits and burs. Grit is approximate.

	Head
	Dia.	Lg.	Shank Dia.	Max. Rotation Speed, rpm	Abrasive Material	Choose a Grit		Each
For Aluminum, Brass, Bronze, Copper, Plastic, and Rubber





				Cylinder with Flat Tip—Felt

				1/4"	1/4"	1/8"	15,000	Silicon Carbide	400 (Extra Smooth) , 600 (Polished) , 800 (Polished)	4564A81	00000
				1/2"	1/2"	1/8"	15,000	Silicon Carbide	400 (Extra Smooth) , 600 (Polished) , 800 (Polished)	4564A82	0000
				3/4"	3/4"	1/8"	15,000	Silicon Carbide	400 (Extra Smooth) , 600 (Polished) , 800 (Polished)	4564A83	0000




						Cylinder with Round Tip—Felt

						3/8"	1/2"	1/8"	15,000	Silicon Carbide	400 (Extra Smooth) , 600 (Polished) , 800 (Polished)	4564A87	0000




								Cone with Round Tip—Felt

								3/8"	1/2"	1/8"	15,000	Silicon Carbide	400 (Extra Smooth) , 600 (Polished) , 800 (Polished)	4564A84	0000
								1/2"	1"	1/8"	15,000	Silicon Carbide	400 (Extra Smooth) , 600 (Polished) , 800 (Polished)	4564A85	0000
								3/4"	1 1/2"	1/4"	15,000	Silicon Carbide	400 (Extra Smooth) , 600 (Polished) , 800 (Polished)	4564A86	0000