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Posi-Lock Brake

Fits 3 to 6 x 1-1/4 in wheelsDurastar 21 and 24 Series
Posi-Lock side brakes for Durastar light and medium duty casters, worked by a foot pedal that locks the wheel. The 6 in brake fits 24 Series only; the 3, 3-1/2, 4 and 5 in brakes fit both 21 and 24 Series.

Brakes by wheel size

Brake Wheel Caster series
3 in Posi-Lock side brake 3 x 1-1/4 in 21, 24
3-1/2 in Posi-Lock side brake 3-1/2 x 1-1/4 in 21, 24
4 in Posi-Lock brake 4 x 1-1/4 in 21, 24
5 in Posi-Lock brake 5 x 1-1/4 in 21, 24
6 in Posi-Lock brake 6 x 1-1/4 in 24 only

From product titles and listings [S1].

Before you order

  1. Series: read the series on the caster; 21 and 24 Series take these brakes.
  2. Wheel: all fit 1-1/4 in wide wheels; match the diameter.
  3. Side: fit the brake on the side you can reach with a foot.

Posi-Lock brake questions

Does the 6 in Posi-Lock brake fit 21 Series casters?

No. The 6 x 1-1/4 in brake is listed for 24 Series only.

How does a Posi-Lock brake engage?

A foot pedal pushes the brake against the wheel to lock it.

Sources

  • [S1] CasterHQ product fields (rated load, diameter, width, wheel and core material, temperature range, mount) and product descriptions for the items on this page, pulled October 20, 2026.

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