3-Inch-Wide Kingpinless Casters · 6 to 12 in, up to 6,000 lb

This collection holds 3 Inch Wide Kingpinless Casters with semi steel, phenolic and forged steel wheels, built for heavy equipment, dies, molds, and plant carts that move very heavy loads. Casters in this collection range from 2,000 to 6,000 lb per caster. Wheels in this category range from 6 up to 12 inches in diameter with a 3 in tread width. The collection includes swivel and rigid models. Kingpinless swivels hold up better under shock and repeat loads. Semi steel (gray iron) rolls with low effort and shrugs off debris. It is loud and can mark finished floors. Phenolic rolls easily on smooth floors and handles dry heat, oil, and grease, but it is not made for water or washdown. It suits warehouse carts, toolboxes, and tool carts, and it is loud on rough floors. Choose swivel casters when the cart must turn in place and rigid casters for straight travel. Semi steel aisle: semi steel casters. Wheel hub: replacement wheels.

Caster Finder Find your caster in 3 steps Mount, size, capacity, narrowed to your exact spec in this collection.

3-Inch-Wide Kingpinless Casters: buying guide

3-inch-wide kingpinless casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Cast iron		6, 8, 10 and 12 in	2,500 to 4,000 lb	Up to 800°F	heat, chips and heavy loads on rough floors
Ductile iron	Steel	6, 8, 10 and 12 in	4,800 to 6,000 lb	-40°F to 800°F	heavy loads with better impact strength than cast iron
Polyurethane	Cast iron	6, 8, 10 and 12 in	4,000 to 6,000 lb	-40°F to 180°F	quiet, floor-friendly and long wearing
Phenolic		6, 8, 10 and 12 in	2,000 to 3,500 lb	-50°F to 250°F	hard and easy rolling on smooth, dry floors

Ratings are for single casters of 3-inch-wide kingpinless casters, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
6 x 3 in	ductile iron, cast iron and polyurethane	2,000 to 6,000 lb
8 x 3 in	cast iron, ductile iron and polyurethane	2,500 to 6,000 lb
10 x 3 in	phenolic, cast iron and polyurethane	2,500 to 6,000 lb
12 x 3 in	cast iron, ductile iron and polyurethane	2,500 to 6,000 lb

Choosing 3-inch-wide kingpinless casters

Load: plan on three casters carrying a four-caster cart [S2]; 3-inch-wide kingpinless casters rated 6,000 lb each then carry about 18,000 lb.
Mount: most 3-inch-wide kingpinless casters use a 4-1/2 x 6-1/4 in top plate; match the bolt holes on your frame to the plate before ordering.
Floor: on 3-inch-wide kingpinless casters, polyurethane is kinder to tile and finished floors; cast iron, ductile iron and phenolic roll easier under heavy loads on smooth concrete.
Rig: swivel and rigid 3-inch-wide kingpinless casters are listed.
Heat: among 3-inch-wide kingpinless casters, the highest listed range is up to 800°F on cast iron; check the temperature field on each listing before oven or hot-room use.

Related to 3-inch-wide kingpinless casters: kingpinless casters.

3-inch-wide kingpinless casters questions

How much weight can 3-inch-wide kingpinless casters carry?

Single 3-inch-wide kingpinless casters are rated 2,000 to 6,000 lb; most fall between 2,500 and 6,000 lb.

What top plate do 3-inch-wide kingpinless casters use?

Most 3-inch-wide kingpinless casters use 4-1/2 x 6-1/4 in.

What wheel material is most common on 3-inch-wide kingpinless casters?

Cast iron leads on 3-inch-wide kingpinless casters, rated 2,500 to 4,000 lb per caster. Among 3-inch-wide kingpinless casters, ductile iron is next at 4,800 to 6,000 lb.

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.

BHP: 1-3/4″ × 2-7/8″, slotted to 3″

BHP: 1-3/4″ × 2-15/16″ slotted to 2-3/8″ × 3-3/8″

BHP: 2-5/8” X 3-5/8” (Slotted to 3” x 3”)

BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"

(3″ Wide Casters), Industry-Standard

BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"

BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"

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