3" x 1.25" Semi-Steel Caster Kits

3 x 1.25 in semi-steel caster kits by tread

Ratings are for single casters of 3 x 1.25 in semi-steel caster kits, from product fields [S1].

Choosing 3 x 1.25 in semi-steel caster kits

1. Load: divide the loaded weight by three for a four-caster cart [S2]; at 300 lb each, 3 x 1.25 in semi-steel caster kits suit a loaded cart of about 900 lb.
2. Mount: most 3 x 1.25 in semi-steel caster kits use a 2-3/8 x 3-5/8 in top plate; match the bolt holes on your frame to the plate before ordering.
3. Floor: on 3 x 1.25 in semi-steel caster kits, semi-steel suits smooth concrete and heavy loads, but is loud and hard on tile and wood.
4. Rig: swivel and rigid 3 x 1.25 in semi-steel caster kits are listed, with side lock brake options.
5. Heat: among 3 x 1.25 in semi-steel caster kits, the highest listed range is -45°F to 600°F on semi-steel; check the temperature field on each listing before oven or hot-room use.

Related to 3 x 1.25 in semi-steel caster kits: gray iron wheels.

3 x 1.25 in semi-steel caster kits questions

Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com

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.
• [S2] Preferred Equipment casters and wheels quick guide PDF (prefeq.com): load sizing on one less caster, wheel types and floor notes.