Sinker EDM Vises | McMaster-Carr

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71 Products

Magnetic Workholding Plates

The entire surface of these plates is magnetic to provide a powerful hold for grinding, drilling, and electrical discharge machining (EDM). They’re useful when clamps would interfere with your process and when there aren’t any convenient spots for clamping material. Pull the handle to switch the magnets on and off. Use the mounting clamps to secure the plate to your machine table and the removable back and side rails to keep your workpiece in position. Plates are sealed against dirt and liquid so they can be submerged in oil baths. They are not recommended for processes where workpieces are submerged in water.

Fine Magnetic Pole Spacing—Fine magnetic pole spacing provides the best hold on small or thin (_1/4" or less) parts.

Standard Magnetic Pole Spacing—Standard magnetic pole spacing is suitable for most applications. It will provide the best grip on large or thick parts.

Fine and Standard Magnetic Pole Spacing—Plates with fine and standard magnetic pole spacing have more than twice the holding power of other plates. Use them with large and small parts.

	Overall
	Lg.	Wd.	Ht.	Max. Holding Power, psi	Magnet Type	Parallel Tolerance	Handle Attachment Permanence	No. of Mounting Clamps Included	Mounting Clamp Hole Dia.		Each
Fine Magnetic Pole Spacing



		7 1/2"	4"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A31	000000000


		10 1/2"	5"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A33	00000000
		12 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A65	00000000
		12 1/2"	8"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A73	00000000
		12 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A87	00000000
		14 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A71	00000000
		15 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A75	00000000
		15 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A81	00000000
		18 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A37	00000000
		18 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A77	00000000
		18 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A83	00000000


		18 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A89	00000000
		24 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A85	00000000
		24 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A92	00000000


		Standard Magnetic Pole Spacing



				7 1/2"	4"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A58	00000000


				10 1/2"	5"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A11	00000000
				12 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A12	00000000
				12 1/2"	8"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A72	00000000
				12 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A86	00000000
				14 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A59	00000000
				15 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A74	00000000
				15 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A79	00000000
				18 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	5016A13	00000000
				18 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A76	00000000
				18 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A82	00000000


				18 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A88	00000000
				24 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A78	00000000
				24 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A84	00000000
				24 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	5016A91	00000000


				Fine and Standard Magnetic Pole Spacing



						4 3/4"	4"	2 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	5016A41	00000000


						7 1/4"	6 1/2"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A44	00000000
						9 1/4"	4"	2 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	5016A42	00000000
						11 1/4"	6"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A45	00000000
						13 1/4"	5"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A43	00000000
						15 1/2"	6"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A46	00000000
						15 3/4"	8"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A47	00000000
						15 3/4"	10"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A52	00000000
						18 3/4"	8"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A48	00000000
						18 3/4"	10"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A53	00000000
18 3/4"						12"	3 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	5016A56	00000000


20 3/4"	8"					2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A49	00000000
20 3/4"	10"					2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A54	00000000
24 3/4"	8"					2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	5016A51	00000000
24 3/4"	10"					3 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	5016A55	00000000
24 3/4"	12"					3 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	5016A57	000000000

Magnetic Workholding Chucks

To grind, drill, lightly mill, and machine parts that rotate around an axis, these chucks hold parts in place magnetically so you can access their inner and outer diameters. Use them when clamps will not fit or could damage the part’s finish. To switch the magnetic grip on and off, pull their handle. They have mounting holes for fitting in your machine, or your machine’s chuck can hold them.

Fine Magnetic Pole Spacing—Chucks with fine magnetic pole spacing hold parts that are smaller or thinner than _1/4".

Standard Magnetic Pole Spacing—Chucks with standard magnetic pole spacing grip large and thick parts. They’re good for most applications.

	Overall						Mounting Holes
	Dia.	Ht.	Max. Holding Power, psi	Magnet Type	Parallel Tolerance	Handle Attachment Permanence	No. of	Thread Size	Ctr.-to-Ctr.		Each
Fine Magnetic Pole Spacing



		4"	2"	115	Rare Earth	0.002"	Removable	3	M6	3 11/32"	9090N133	0000000


		5 1/8"	2"	115	Rare Earth	0.002"	Removable	3	M6	4 13/32"	9090N134	000000
		6 1/4"	3"	30	Permanent	0.002"	Removable	4	1/4"-20	4"	9090N121	00000000
		6 3/8"	2"	115	Rare Earth	0.002"	Removable	4	M8	5 1/2"	9090N135	00000000
		7 3/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	9090N122	00000000
		7 7/8"	2"	115	Rare Earth	0.002"	Removable	4	M8	7 3/32"	9090N136	00000000
		9 7/8"	2 1/2"	115	Rare Earth	0.002"	Removable	4	M10	8 13/16"	9090N137	00000000
		10 1/8"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	9090N123	00000000
		11 7/8"	2 1/2"	115	Rare Earth	0.002"	Removable	4	M10	10 1/4"	9090N138	00000000
		12 1/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	9090N124	00000000
		15 3/4"	2 1/2"	115	Rare Earth	0.002"	Removable	6	M10	13 25/32"	9090N139	00000000


		Standard Magnetic Pole Spacing



				4"	2"	115	Rare Earth	0.002"	Removable	3	M6	3 11/32"	9090N125	000000


				5 1/8"	2"	115	Rare Earth	0.002"	Removable	3	M6	4 13/32"	9090N126	000000
				6 1/4"	3"	30	Permanent	0.002"	Removable	4	1/4"-20	4"	9090N112	00000000
				6 3/8"	2"	115	Rare Earth	0.002"	Removable	4	M8	5 1/2"	9090N127	00000000
				7 3/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	9090N113	00000000
				7 7/8"	2"	115	Rare Earth	0.002"	Removable	4	M8	7 3/32"	9090N128	00000000
				9 1/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	9090N114	00000000
				9 7/8"	2 1/2"	115	Rare Earth	0.002"	Removable	4	M10	8 13/16"	9090N129	00000000
				10 1/8"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	9090N115	00000000
				11 7/8"	2 1/2"	115	Rare Earth	0.002"	Removable	4	M10	10 1/4"	9090N131	00000000
				12 1/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	9090N116	00000000


				15 1/4"	3 1/2"	30	Permanent	0.002"	Removable	6	5/16"-18	7 3/8"	9090N117	00000000
				15 3/4"	2 1/2"	115	Rare Earth	0.002"	Removable	6	M10	13 25/32"	9090N132	00000000
				16 1/4"	3"	30	Permanent	0.002"	Removable	6	3/8"-16	9"	9090N118	00000000
				20 1/4"	3 1/2"	30	Permanent	0.002"	Removable	6	3/8"-16	12 13/32"	9090N119	000000000