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Semi-Steel Casters w/ Gray Iron Wheels · 3"–5" · 300–1,800 lb · Cast Iron

Diameter: 3 to 5 inTread: 1-1/4 to 2 inCapacity: 300 to 1,000 lb per casterPlate sizes: 2-3/8 x 3-5/8, 4 x 4-1/2
The 24 semi-steel casters here come from CasterHQ with 3 to 5 in wheels, rated 300 to 1,000 lb each. Most mount on a 2-3/8 x 3-5/8 in plate, with 4 x 4-1/2 in also offered, with swivel and rigid versions, and 8 have a side lock brake. Picks range from a 5 x 1.25 in semi-steel rigid caster rated 300 lb to a 5 x 2 in semi-steel swivel caster rated 1,000 lb. Most are rated for -45°F to 600°F.

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3 types

Wheel = wheel diameter · capacity is per caster.

Light-Duty Institutional Plate Casters

Gray iron (semi-steel) wheel casters for light-duty institutional and commercial carts and equipment. Specified where maximum rolling efficiency and high load performance are required on smooth, clean concrete floors.

Standard Configuration Envelope

  • Mounting Plate: 2-3/8″ × 3-5/8″
  • Bolt Hole Pattern: 1-3/4″ × 2-7/8″, slotted to 3″
  • Wheel Diameters: 3″–5″
  • Tread Width: 1-1/4″
  • Wheel Material: Gray iron (semi-steel)

Material Performance

Gray iron wheels provide an exceptionally low rolling resistance on smooth, hard surfaces, making them a strong choice for high-frequency movement and heavier loads within light-duty caster frames. They are impact resistant and offer long wear life in dry environments.

Application Notes

Because gray iron is a hard wheel material, it is best suited for smooth, clean concrete where debris is minimal. It is not recommended for sensitive floor finishes or environments where floor noise, vibration, or surface marring are concerns. For wet or washdown areas, verify corrosion requirements at the model level.

Common Applications

  • Shop carts, dollies, and facility maintenance equipment
  • Material handling in warehouses and light industrial environments
  • Industrial carts and racks on smooth concrete

Standards & Compliance

ANSI-tested designs · ICWM dimensional standards · NSF-listed models · RoHS-compliant materials

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