ID Xpansion™ Clamp

Measurements Available: Inch, Metric

ID Xpansion Clamps

ID Xpansion™ Clamps

The ID Xpansion™ clamp is the ideal solution to hold parts on an inside diameter for high density machining on vertical or horizontal machining centers. It can also be used as an expanding mandrel on a lathe.

These machinable clamps are produced in 12L14 steel with black oxide coating in 12 sizes and can hold internal diameters from under 3/16 to almost 10 inches (4.1 to 254mm). #10 manufactured using 7075-T6 aluminum.

The flange 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 a proper fit. Often times the clamps can be remachined for different size jobs.

The low profile ID Xpansion™ Clamp can hold several parts in one compact area for secondary operations without any clamping interference. They are quickly tightened with a hex key, torque driver or can be mated to hydraulic pull cylinders for automation.

 

  • 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
  • Heat-treated and coated screw for long life
  • Clamp body made of mild steel for machinability
  • Tighten with hex key or hydraulic pull cylinders
    (Drill clearance hole for longer bolt into cylinder)
  • Longer screws available for hydraulic applications
  • Longer tapered screws available for each ID size
  • Tungsten Carbide coating can be added to increase holding force
ID Xpansion Clamp

Clamp Machining and Installation

Inch

Part
Number
Model
Number
A B C D E+.000
-.002
F G+ H* I J Torque
(Ft/lbs.)
Holding
Force (lbs)
Replacement
Tapered Screws
31000 #00 CAD .42 .30 .24 .12 .787 .29 .16 2-56 on .540 BHC 2-56 x 1/2 .16 0.5 250 31001
31050 #0 CAD .86 .63 .59 .23 1.170 .49 .28 6-32 on .825 BHC 8-32 x 1 .30 3.6 950 31002
31100 #1 CAD .98 .75 .59 .23 1.240 .56 .48 6-32 on .910 BHC 1/4-20 x 1 1/4 .50 13.3 1,900 31010
31150 #2 CAD .98 .75 .59 .23 1.476 .79 .53 6-32 on 1.140 BHC 5/16-18 x 1 1/4 .56 27.6 2,500 31020
31200 #3 CAD 1.13 .88 .69 .25 1.968 1.06 .71 8-32 on 1.550 BHC 3/8-16 x 1 1/2 .71 49.3 4,500 31032
31250 #4 CAD 1.25 1.0 .81 .25 2.205 1.39 .90 8-32 on 1.790 BHC 1/2-13 x 1 1/2 .71 120.0 5,900 31042
31300 #5 CAD 1.56 1.25 1.06 .31 2.736 1.65 1.15 10-32 on 2.200 BHC 5/8-11 x 1 3/4 .79 224.0 10,000 31052
31350 #6 CAD 1.56 1.25 1.06 .31 2.972 2.03 1.15 10-32 on 2.515 BHC 5/8-11 x 1 3/4 .79 224.0 10,000 31052
31400 #7 CAD 1.79 1.48 1.27 .31 4.232 3.06 1.15 1/4-20 on 3.646 BHC 5/8-11 x 2 .79 224.0 10,000 31072
31450 #8 CAD 1.79 1.48 1.27 .31 5.232 4.06 1.15 1/4-20 on 4.648 BHC 5/8-11 x 2 .79 224.0 10,000 31072
31500 #9 CAD 1.79 1.48 1.27 .31 5.232 6.89 1.15 1/4-20 on 4.648 BHC 5/8-11 x 2 .79 224.0 10,000 31072
31550** #10 CAD 1.79 1.48 1.27 .31 6.000 9.85 1.15 1/4-20 on 5.250 BHC 5/8-11 x 2 .79 125.0 6,000 31072

Metric

Part
Number
Model
Number
A B C D E+.000
-.050
F G+ H* I J Torque
(N.m.)
Holding
Force (N.)
Replacement
Tapered Screws
38000 #00 CAD 10.7 7.6 6.1 3.0 20.0 7.4 4.1 M2 on 13.7 BHC M2x12 4.1 .70 1,113 38001
38050 #0 CAD 21.8 16.0 15.0 5.9 29.72 12.4 7.1 M3 on 20.95 BHC M4x25 7.2 5.00 4,228 38002
38100 #1 CAD 24.9 19.0 15.0 5.9 31.5 14.2 12.2 M3 on 23.1 BHC M6x30 11.2 17.00 8,455 38010
38150 #2 CAD 24.9 19.0 15.0 5.9 37.5 20.0 13.5 M3 on 29.0 BHC M8x30 13.2 34.00 11,125 38020
38200 #3 CAD 28.6 22.2 17.5 6.4 50.0 27.0 18.0 M4 on 39.4 BHC M10x35 16.3 60.00 20,025 38032
38250 #4 CAD 31.8 25.4 20.6 6.4 56.0 35.3 23.0 M4 on 45.5 BHC M12x40 20.3 150.00 26,255 38042
38300 #5 CAD 39.6 31.8 27.0 7.9 69.5 42.0 29.3 M5 on 55.9 BHC M16x45 21.4 280.00 44,500 38052
38350 #6 CAD 39.6 31.8 27.0 7.9 75.5 51.5 29.3 M5 on 63.9 BHC M16x45 21.4 280.00 44,500 38052
38400 #7 CAD 45.5 37.6 32.3 7.9 107.5 77.7 29.3 M6 on 92.6 BHC M16x50 19.3 280.00 44,500 38072
38450 #8 CAD 45.5 37.6 32.3 7.9 132.9 103.0 29.3 M6 on 118.06 BHC M16x50 19.3 280.00 44,500 38072
38500 #9 CAD 45.5 37.6 32.3 7.9 132.9 175.0 29.3 M6 on 118.06 BHC M16x50 19.3 280.00 44,500 38072
38550** #10 CAD 45.5 37.6 32.3 7.9 152.4 250.2 29.3 M6 on 133.35 BHC M16x50 19.3 170.00 26,000 38072
G+ Minimum diameter the “F” dimension can be machined or turned down to.
H* – (3) Mounting Screws Included. (4) Mounting Screws Included with #9 & #10.
** – Clamp made from 7075-T6 aluminum stock.
MODEL #00 – #6 ID Xpansion™ Clamps
  • Expand ID Clamp approximately .002” to .003” (.075mm) above the relaxed diameter and machine to fit the workpiece bore on a lathe or milling machine.
  • If machining the ID Clamp on a lathe, use the supplied hex nut against the back of the flange to tighten the tapered screw. This nut is only used for machining the ID Clamp.
  • Machine a counterbore in the fixture for the “E” dimension flange. Drill and tap (D&T) the fixture for the mounting holes per column “H”. D&T thread “I” in the center of the counterbore for the Tapered Screw.
  • Maximum recommended expansion from fully relaxed for the #00 through #6 ID Clamps is as follows: #00 Ø.005” (Ø.13mm); #0 Ø.010” (Ø.25mm); #1 Ø.013” (Ø.33mm); #2 Ø.015” (Ø.38mm); #3 Ø.015” (Ø.38mm); #4 Ø.015” (Ø.38mm); #5 Ø.015” (Ø.38mm); #6 Ø.015” (Ø.38mm).
MODEL #7-10 ID Xpansion™ Clamps
  • A Locking Ring (LR) is provided to ensure the clamping segments are rigid for machining the ID Clamp to the workpiece bore size. The #9 and #10 ID Clamp is supplied with 2 Locking Rings so it can be machined/reused at a smaller size than the large Locking Ring will allow it to be used. Do not attempt to use the two Locking Rings simultaneously with these ID Clamps.
  • To machine ID Clamp, insert the LR and torque the Tapered Screw to approximately 40 ft./lbs. (55 Nm). Machine down to within +Ø.003 to +Ø.005” (+Ø.08mm to +Ø.13mm) over the low limit bore size of the workpiece. Loosen the Tapered Screw to remove the Locking Ring and test fitment with workpiece. If workpiece fitment is too tight, repeat the machining process to achieve as close a fit to the low limit size of the workpiece bore as is required/desired for the particular application.
  • Maximum recommended expansion from fully relaxed for the #7 through #10 ID Clamps is as follows: #7 Ø.015” (Ø.38mm); #8 Ø.015” (Ø.38mm); #9 Ø.020” (Ø.50mm); #10 Ø.080” (Ø2.0mm).
  • GENERAL NOTES: ID Clamps #00 through #9 are manufactured from 12L14 “Free Machining” low carbon steel. The #10 ID Clamp is manufactured from 7075-T6511 “High Strength” aluminum alloy. Aggressive material removal rates/practices are not recommended when machining ID Clamps “to size”. For blind hole applications, please see our Manual Actuators, or contact us for the availability of custom screws and other mounting/use options.

Applications

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