Expansion clamps

ID expansion clamps expand to self-center and clamp on the inside diameter of a workpiece, leaving the outside clear for machining. Tightening the tapered center screw of ID clamps with a hex wrench pushes the clamping segments outward, and slightly downward, to exert force on the workpiece’s internal bore.




The ID Xpansion clamp is the ideal way to hold multiple parts on an inside diameter for multiple machining on a vertical machining center or a horizontal machining center. These machinable clamps are produced in 12 sizes and can hold internal diameters from under 3/16ths inches to just under 10 inches 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 proper fit. Often times the clamps can be remachined for different size jobs.

One of the benefits of these low profile clamps is holding many lathe parts, for secondary machining, on one compact set up. 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)

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