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Expanding Rubber Stem – Top

logo July 22 2025

Expanding rubber stem casters are designed to mount the caster into round or square tubing.  Turning the hex nut beneath the lower raceway on the swivel caster expands the rubber stem adapter inside of the round or square tubing for a tight fit, as shown here. Caster City offers various expanding rubber stem sizes.

Caster City manufactures expanding rubber stem kits to fit an Inner Diameter range of 3/4″ to 1-13/16″ Inner Diameter metal tubing.  See the chart below.

We manufacture all stem casters in Stainless Steel as well.

We Offer Expanding Rubber Stem Casters in Zinc and Stainless Steel

Zinc Expanding Rubber Stem Casters

img Zinc Stem Caster Model 3 (up to 350 lbs)
img Total-Locking Stem Caster w/ Metal Pedal (up to 350lbs)
img Total-Locking Stem Caster w/ Nylon Pedal (up to 350lbs)

Stainless Steel Expanding Rubber Stem Casters

img Stainless Steel Stem Caster Model 3 (up to 350lbs)(SS-3 uses high-temp raceway seals and grease fitting in swivel)
img Economy Stainless Steel Caster Model K3A (up to 350lbs)(this caster has no seals or grease fittings)
img Total Lock Stainless Steel Stem Caster Model 3A (up to 350lbs)

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