Machinable Expanding Micro™ Clamps The compact Machinable Expanding Micro™ Clamp is available with extra material on the clamping jaw so it can be machined to conform to the shape of your workpiece – enabling you to fixture unusual applications easily. The specially designed steel wedge spreads the clamping force uniformly on both sides of the aluminum channel. Clamps may be ordered with a unique locking plate to make the clamp rigid while machining the jaw to your specifications, without vibration. • Material: Channel 7075-76 Alumnium • Mounting Screws Included • Compact Design • Allows more parts to be mounted on Fixture Part Number With Locking Plate Part Number Without Locking Plate A* B C D E F† G Mounting Screw **H I Maximum Holding Force (lbs) Recommended Expansion Stroke (in) 68770 68771 1.125 0.50 0.62 0.420 0.18 0.18 0.400 2-56 8-32 500 0.015 68772 68773 1.500 0.75 0.94 0.632 0.37 0.26 0.624 6-32 1/4-20 1,500 0.015 68774 68775 2.000 1.00 1.25 0.820 0.50 0.39 0.812 6-32 5/16-18 2,000 0.020 68776 68777 3.000 1.50 1.87 1.215 0.75 0.62 1.200 10-32 1/2-13 3,500 0.030 68778 68779 4.000 2.00 2.50 1.625 1.00 0.80 1.625 1/4-20 5/8-11 6,000 0.040 * The distance needed between workpieces for clamp clearance, drill and tap mounting holes on the center of “A” dimension. † The amount of machinable stock on jaws. ** Mounting Screws Included Metric Part Number With Locking Plate Part Number Without Locking Plate A* B C D E F† G Mounting Screw **H I Maximum Holding Force (N) Recommended Expansion Stroke (mm) 68870 68871 28.6 12.7 15.7 10.67 6.3 4.6 10.16 M2 M4 2,224 0.4 68872 68873 38.1 19.1 23.9 16.05 9.4 6.6 15.87 M4 M6 6,670 0.4 68874 68875 50.8 25.4 31.8 20.83 12.7 9.9 20.62 M4 M8 8,895 0.6 68876 68877 76.2 38.1 47.5 30.86 19.1 15.7 30.48 M5 M12 15,565 0.8 68878 68879 101.6 50.8 63.5 41.28 25.4 20.3 41.28 M6 M16 26,690 1.1 * The distance needed between workpieces for clamp clearance, drill and tap mounting holes on the center of “A” dimension. † The amount of machinable stock on jaws. ** Mounting Screws Included LOW PROFILE CLAMPING Jergens, Inc. | 15700 S. Waterloo Road | Cleveland, Ohio 44110-3898 USA 368 LOW PROFILE CLAMPING workholding solutions
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