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Expanding Rubber Adapter Kits

Fits tube ID: 3/4, 7/8, 1, 1-1/8, 1-3/16, 1-3/8, 1-1/2, 1-3/4, 1-7/8 inStem: 1/2 x 2-9/16 in
Expanding rubber adapter kits that turn a hollow tube leg into a caster mount. A rubber sleeve slides into the tube; tightening the stem squeezes the rubber so it grips the inside wall. No drilling or welding. Pick the kit by the inside diameter of the tube, not the outside.

Expanding Rubber Adapter Kits: buying guide

Expanding rubber adapter kits mount a stem caster in a hollow tube leg with no drilling or welding. Sizes for tube inside diameters from 3/4 to 1-7/8 in.

Tube ID 3/4 to 1-7/8 inNo drilling or weldingFits 1/2 x 2-9/16 in stem

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Video Guide Expanding Stem Casters for Square & Round Tubing

How the rubber expander locks into open tube legs: measuring inside diameter, selecting the adapter size, and seating the caster. Applies to every size on this page.

How an expanding adapter works

The kit is a rubber sleeve with metal washers on a stem. Tightening the stem shortens the sleeve and makes it bulge outward against the tube wall. Rubber grips round tube well and absorbs vibration, but it relies on friction, so it suits light and medium loads rather than heavy carts.

Sizing

  1. Measure the inside diameter of the tube with calipers. For a tube with a 1-1/2 in outside diameter and 16 gauge wall, the ID is about 1-3/8 in.
  2. Pick the matching kit. Sizes here run from 3/4 to 1-7/8 in ID.
  3. Check the stem. Most kits fit a 1/2 x 2-9/16 in stem.

Where they fit

Work tables, prep tables, chairs, racks and display fixtures with open tube legs. For square tube, check that the kit is made for square or use a plate mount instead.

Expanding adapter questions

How do I size an expanding rubber adapter?

Measure the inside diameter of the tube and pick the kit with that size. Sizes here run 3/4 to 1-7/8 in.

Do I need to drill or weld?

No. The rubber expands inside the tube and holds by friction.

What stem do these kits fit?

Most fit a 1/2 x 2-9/16 in stem.

Sources

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