| CHUCK HOLDING POWER INFORMATION |
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MAGNETIC CHUCKS & SINE PLATES Holding power varies greatly, depending on the size and thickness of the workpiece, the contact area between the part and the chuck, the material the workpiece is made out of, workpiece surface finish and air gaps between the part and the chuck. Things that create air gaps are air, protective coatings, paint, galvanizing, oil, rust, dirt, etc. Holding power falls off at the ends and sides of the chuck (where the frame is and therefore no magnets). Under near ideal conditions at the center of the chuck, using a ground 1" X 1" X 1" cube of CRS, the following average MAXIMUM holding powers were found. |
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The holding powers above should be derated, based on material and surface finish, using these tables. |
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VACUUM CHUCKS In theory 14.7 PSI can be obtained with a vacuum chuck. In the real world, under ideal conditions, using a ground workpiece with all unused holes completely masked off a MAXIMUM of approximately 10 PSI can be obtained. Dirt, warped parts, a rough surface finish and other factors can reduce this significantly. |
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