Magnetic Workholding Plates

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Magnetic Workholding Chucks

Magnetic Workholding Plates

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76 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"	0000000	000000000


		10 1/2"	5"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
		12 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
		12 1/2"	8"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
		12 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
		14 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
		15 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
		15 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
		18 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
		18 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
		18 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000


		18 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
		24 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
		24 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000


		Standard Magnetic Pole Spacing



				7 1/2"	4"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000


				10 1/2"	5"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
				12 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
				12 1/2"	8"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
				12 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
				14 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
				15 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
				15 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
				18 1/2"	6"	2 3/4"	40	Permanent	0.002"	Removable	2	9/16"	0000000	00000000
				18 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
				18 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000


				18 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
				24 1/2"	8"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
				24 1/2"	10"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
				24 1/2"	12"	2 3/4"	40	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000


				Fine and Standard Magnetic Pole Spacing



						4 3/4"	4"	2 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000


						7 1/4"	6 1/2"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
						9 1/4"	4"	2 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
						11 1/4"	6"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
						13 1/4"	5"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
						15 1/2"	6"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
						15 3/4"	8"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
						15 3/4"	10"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
						18 3/4"	8"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
						18 3/4"	10"	2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
18 3/4"						12"	3 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000


20 3/4"	8"					2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
20 3/4"	10"					2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
24 3/4"	8"					2 3/4"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
24 3/4"	10"					3 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	00000000
24 3/4"	12"					3 1/2"	90	Permanent	0.002"	Permanent	2	9/16"	0000000	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"	00000000	0000000


		5 1/8"	2"	115	Rare Earth	0.002"	Removable	3	M6	4 13/32"	00000000	000000
		6 1/4"	3"	30	Permanent	0.002"	Removable	4	1/4"-20	4"	00000000	00000000
		6 3/8"	2"	115	Rare Earth	0.002"	Removable	4	M8	5 1/2"	00000000	00000000
		7 3/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	00000000	00000000
		7 7/8"	2"	115	Rare Earth	0.002"	Removable	4	M8	7 3/32"	00000000	00000000
		9 7/8"	2 1/2"	115	Rare Earth	0.002"	Removable	4	M10	8 13/16"	00000000	00000000
		10 1/8"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	00000000	00000000
		11 7/8"	2 1/2"	115	Rare Earth	0.002"	Removable	4	M10	10 1/4"	00000000	00000000
		12 1/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	00000000	00000000
		15 3/4"	2 1/2"	115	Rare Earth	0.002"	Removable	6	M10	13 25/32"	00000000	00000000


		Standard Magnetic Pole Spacing



				4"	2"	115	Rare Earth	0.002"	Removable	3	M6	3 11/32"	00000000	000000


				5 1/8"	2"	115	Rare Earth	0.002"	Removable	3	M6	4 13/32"	00000000	000000
				5 1/2"	3"	30	Permanent	0.002"	Removable	4	1/4"-20	4"	00000000	00000000
				6 1/4"	3"	30	Permanent	0.002"	Removable	4	1/4"-20	4"	00000000	00000000
				6 3/8"	2"	115	Rare Earth	0.002"	Removable	4	M8	5 1/2"	00000000	00000000
				7 3/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	00000000	00000000
				7 7/8"	2"	115	Rare Earth	0.002"	Removable	4	M8	7 3/32"	00000000	00000000
				9 1/4"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	00000000	00000000
				9 7/8"	2 1/2"	115	Rare Earth	0.002"	Removable	4	M10	8 13/16"	00000000	00000000
				10 1/8"	3"	30	Permanent	0.002"	Removable	4	3/8"-16	5"	00000000	00000000
				11 7/8"	2 1/2"	115	Rare Earth	0.002"	Removable	4	M10	10 1/4"	00000000	00000000


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

Parallels for Magnetic Workholding

Use with magnetic workholding chucks and plates to extend their holding power above the working surface. These parallels are laminated with _1/16"-thin layers of iron and stainless steel for a strong, consistent hold. Compared to parallels made from aluminum or brass, these are harder and more dent resistant, so they hold their shape over time. Each layer is entirely fused together with copper brazing, so you can machine these parallels without the layers separating. Note: Parallels are not magnetic on their own.

Sold as Matched Pair—Manufactured and ground together to ensure they are parallel and square to each other with a tolerance of 0.0002".

4 Precision-Ground Sides—Precision ground on the top edge, bottom edge, and both faces.

				Tolerance			Sold Individually		Sold as Matched Pair
	Lg.	Thk.	Ht.	Ht.	Parallel	Material		Each		Pair
4 Precision-Ground Sides



		6"	1"	2"	-0.005" to 0.005"	0.0002"	Copper-Brazed Iron, Copper-Brazed Stainless Steel	0000000	0000000	0000000	0000000


		8"	1"	4"	-0.005" to 0.005"	0.0002"	Copper-Brazed Iron, Copper-Brazed Stainless Steel	0000000	000000	0000000	00000000