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Kingpinless Casters

Diameter: 3-1/2 to 13 inTread: 2, 3 and 5-1/2 inPlate: 4 x 4-1/2 in (most)Capacity: 600 to 8,200 lb per caster
Kingpinless casters in polyurethane, phenolic, cast iron and nylon. Polyurethane on cast iron and aluminum cores is the most common tread here, rated 600 to 6,000 lb per caster in 3-1/2 to 13 in. Other treads: phenolic 600 to 8,200 lb, cast iron 750 to 2,600 lb and nylon 1,000 to 5,000 lb. Sets of 4 list 2,800 to 4,000 lb combined. Brands: Hamilton.

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4 types

Wheel = wheel diameter · capacity is per caster.

Kingpinless Casters: buying guide

Kingpinless casters in polyurethane, phenolic and cast iron, 3-1/2 to 13 in wheels, rated 600 to 8,200 lb per caster.

Diameter 3-1/2 to 13 inTread 2, 3 and 5-1/2 inPlate 4 x 4-1/2 in (most)600 to 8,200 lb per caster

Shop Kingpinless Casters by Capacity Tier

Kingpinless casters by tread

Tread Core Wheel sizes Rated per caster Listed temperature Where it fits
Polyurethane Cast iron and Aluminum 3-1/2 to 13 in 600 to 6,000 lb -5°F to 160°F quiet, floor-friendly and long wearing
Phenolic 4 to 12 in 600 to 8,200 lb Up to 250°F hard and easy rolling on smooth, dry floors
Cast iron 4 to 12 in 750 to 2,600 lb -40°F to 320°F heat, chips and heavy loads on rough floors
Nylon 3-1/2 to 10 in 1,000 to 5,000 lb -30°F to 220°F low rolling effort on smooth floors, handles wet areas
Rubber Steel and Cast iron 4 to 13 in 600 to 7,500 lb 0°F to 175°F cushioned and quiet on finished floors
Forged steel 4, 5, 6, 8 and 10 in 1,000 to 6,000 lb -22°F to 750°F very high loads and impact
Ductile iron Steel 4 to 12 in 1,500 to 6,000 lb -45°F to 800°F heavy loads with better impact strength than cast iron

Ratings are for single casters of kingpinless casters, from product fields [S1].

Wheel sizes

Wheel Treads Rated
3-1/2 x 2 in polyurethane, nylon and steel 550 to 1,000 lb
4 x 2 in polyurethane, cast iron and phenolic 450 to 2,000 lb
5 x 2 in polyurethane, nylon and cast iron 600 to 2,150 lb
6 x 2 in polyurethane, cast iron and nylon 550 to 2,500 lb
6 x 3 in polyurethane, phenolic and cast iron 1,800 to 6,000 lb
8 x 2 in polyurethane, cast iron and phenolic 600 to 2,800 lb
8 x 3 in polyurethane, phenolic and cast iron 1,760 to 7,200 lb
10 x 3 in polyurethane, phenolic and nylon 2,200 to 8,200 lb

Choosing kingpinless casters

  1. Load: divide the loaded weight by three for a four-caster cart [S2]. A 3,200 lb caster from this page then suits about 9,600 lb, and the strongest at 8,200 lb about 24,600 lb.
  2. Mount: most kingpinless casters use a 4 x 4-1/2 in top plate; 4-1/2 x 6-1/2 in and 2-1/2 x 3-5/8 in plates are listed too; measure bolt hole centers on the old plate and compare.
  3. Floor: on kingpinless casters, polyurethane and rubber are kinder to tile and finished floors; phenolic, cast iron, nylon, forged steel and ductile iron roll easier under heavy loads on smooth concrete.
  4. Rig: swivel and rigid kingpinless casters are listed.
  5. Heat: among kingpinless casters, the highest listed range is -45°F to 800°F on ductile iron; check the temperature field on each listing before oven or hot-room use.

Kingpinless casters questions

How much weight can kingpinless casters carry?

Single kingpinless casters are rated 600 to 8,200 lb; most fall between 1,000 and 3,200 lb.

What top plate do kingpinless casters use?

Most kingpinless casters use 4 x 4-1/2 in. Others listed: 4-1/2 x 6-1/2 in and 2-1/2 x 3-5/8 in.

What wheel material is most common on kingpinless casters?

Polyurethane leads on kingpinless casters, rated 600 to 6,000 lb per caster. Phenolic is next at 600 to 8,200 lb.

How long do kingpinless casters take to ship?

Lead time on kingpinless casters depends on brand and model: Hamilton builds many of its models here to order, typically 4 to 6 weeks, and Hamilton models stocked for Pronto Ship go out faster.

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.
  • [S3] Hamilton Caster catalog, PRONTO star marks for stocked models (hamiltoncaster.com/catalog.pdf), checked October 20, 2026.

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