The ID expansion clamp is the ideal way to hold parts on an inside diameter for multiple machining on a vertical or horizontal machining center. The larger diameter of the clamp is held to a close tolerance for precision locating in a machined pocket on work cubes and fixture plates. The customer machines the mild steel clamp to match the bore of the part ensuring proper fit. Often times the clamps can be remachined for different size jobs. ID Expansion Clamp • Body Material: Mild Steel • Low Profile • Ideal for Secondary Operations on Lathe Parts • Easily Machined to Size on Lathe or Mill • Excellent for Palletized Setups • Allows More Parts Per Workcube or Fixture Plate • Tighten with Hex Key or Hydraulic Pull Cylinders (Drill clearance hole for longer bolt into hydraulic cylinder) • Instructions included with each clamp Metric Part Number A B C D +0.00 -0.05 E F G+ H* I J Torque (Nm) Holding Force (N.) Replacement Screw 68829 10.7 7.6 6.1 3.0 20.0 7.4 4.1 M2 on 13.7 BHC M2 4.1 .70 1,113 68909 68830 21.8 16.0 15.0 5.9 29.72 12.4 8.0 M3 on 20.95 BHC M4 7.2 5.00 4,228 68910 68831 24.9 19.0 15.0 5.9 31.5 14.2 12.2 M3 on 23.1 BHC M6 11.2 17.00 8,455 68911 68832 24.9 19.0 15.0 5.9 37.5 20.0 13.5 M3 on 29.0 BHC M8 13.2 34.00 11,125 68912 68833 28.6 22.2 17.5 6.4 50.0 27.0 18.0 M4 on 39.4 BHC M10 16.3 60.00 20,025 68913 68834 31.8 25.4 20.6 6.4 56.0 35.3 23.0 M4 on 45.5 BHC M12 20.3 150.00 26,255 68914 68835 39.6 31.8 27.0 7.9 69.5 42.0 29.3 M5 on 55.9 BHC M16 21.4 280.00 44,500 68915 68836 39.6 31.8 27.0 7.9 75.5 51.5 29.3 M5 on 63.9 BHC M16 21.4 280.00 44,500 68915 68837 45.5 37.6 32.3 7.9 107.5 77.7 29.3 M6 on 92.6 BHC M16 19.3 280.00 44,500 68916 68838 45.5 37.6 32.3 7.9 132.90 103.0 29.3 M6 on 118.06 BHC M16 19.3 280.00 44,500 68916 68839 45.5 37.6 32.3 7.9 175.0 132.9 29.3 M6 on 118.06 BHC M16 19.3 280.00 44,500 68916 68850 45.5 37.6 32.3 7.9 250.2 152.4 29.3 M6 on 133.35 BHC M16 19.3 170.00 26,000 68916 * (3) Mounting Screws Included + Minimum diameter the “F” dimension can be machined too. Part Number A B C D +.000 -.002 E F G+ H* I J Torque (ft/lbs) Holding Force (lbs) Replacement Screw 68401 .42 .30 .24 .12 .787 .29 .16 2-56 on .540 BHC 2-56 .16 .05 250 68900 68402 .86 .63 .59 .23 1.170 .49 .28 6-32 on .825 BHC 8-32 .30 3.6 950 68901 68403 .98 .75 .59 .23 1.240 .56 .48 6-32 on .910 BHC 1/4-20 .50 13.3 1,900 68902 68404 .98 .75 .59 .23 1.476 .79 .53 6-32 on 1.140 BHC 5/16-18 .56 27.6 2,500 68903 68405 1.13 .88 .69 .25 1.968 1.06 .71 8-32 on 1.550 BHC 3/8-16 .71 49.3 4,500 68904 68406 1.25 1.0 .81 .25 2.205 1.39 .90 8-32 on 1.790 BHC 1/2-13 .71 120.0 5,900 68905 68407 1.56 1.25 1.06 .31 2.736 1.65 1.15 10-32 on 2.200 BHC 5/8-11 .79 224.0 10,000 68906 68408 1.56 1.25 1.06 .31 2.972 2.03 1.15 10-32 on 2.515 BHC 5/8-11 .79 224.0 10,000 68906 68409 1.79 1.48 1.27 .31 4.232 3.06 1.15 1/4-20 on 3.646 BHC 5/8-11 .79 224.0 10,000 68907 68410 1.79 1.48 1.27 .31 5.232 4.06 1.15 1/4-20 on 4.648 BHC 5/8-11 .79 224.0 10,000 68907 68411 1.79 1.48 1.27 .31 6.89 5.23 1.15 1/4-20 on 4.648 BHC 5/8-11 .79 224.0 10,000 68907 68412 1.79 1.48 1.27 .31 9.85 6.00 1.15 1/4-20 on 5.250 BHC 5/8-11 .79 125.0 6,000 68907 LOW PROFILE CLAMPING Phone: 877-426-2504 | Fax: +1 216-481-6193 | E-mail: info@jergensinc.com | www.jergensinc.com 365 LOW PROFILE CLAMPING workholding solutions
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