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Caster Frames: Swivel & Rigid Replacement

These caster frames, also called rigs or yokes, let you reuse a good wheel or build a caster to your own spec. Frames in this collection range from 250 to 1,250 lb per frame where a rating is listed. Swivel and rigid versions come in zinc plated steel with 2-3/8 x 3-5/8 and 4 x 4-1/2 top plates. Some listings are pneumatic rigs sized for 8 and 10 in air tires. The final capacity is the lower of the frame and the wheel you install. Match the plate pattern, wheel diameter, wheel width, and axle size before you order. Choose swivel frames when the cart must turn in place and rigid frames for straight travel. Capacities below are per frame unless a listing says set. Read the listing for the exact wheel size, overall height, and mount shown. Confirm the load rating printed on the title before you order. Wheel aisle: polyurethane wheels. Pneumatic hub: pneumatic casters.

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2 types

Wheel = wheel diameter · capacity is per caster.

Caster Frames: buying guide

Caster frames (yokes and rigs) without wheels, swivel and rigid, for 3 to 10 in wheels on 2-3/8 x 3-5/8 or 4 x 4-1/2 in plates, rated 250 to 1,250 lb.

Swivel and rigid3 to 10 in wheels250 to 1,250 lb

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Frames listed

Wheel size Plate Rating
3, 3-1/2, 4, 5 x 1-1/4 in 2-3/8 x 3-5/8 in 350 lb
4 x 2 in 4 x 4-1/2 in 1,000 lb
5, 6, 8 x 2 in 4 x 4-1/2 in 1,250 lb
8 in pneumatic 4 x 4-1/2 in 250 lb
10 in pneumatic 4 x 4-1/2 in 350 lb

From product titles and fields [S1]. Swivel and rigid for each size.

When to replace the frame

  • The fork legs are bent and the wheel rubs or tilts.
  • The swivel is loose or rough and cannot be adjusted.
  • The plate is cracked around the bolt holes.

Reuse a good wheel by matching its diameter, width and axle size to the new frame.

Caster frame questions

What is a caster frame?

The fork and mounting plate that hold the wheel. Swivel frames turn; rigid frames do not.

How much can these frames carry?

From 250 lb (8 in pneumatic rig) to 1,250 lb (5 to 8 x 2 in yokes).

What plate sizes are available?

2-3/8 x 3-5/8 in and 4 x 4-1/2 in.

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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