Xtreme Heavy Duty Casters - Capacity up to 6,000lbs. · 6"–12" · 750–6,000 lb · Polyurethane

This collection holds Xtreme Heavy Duty Casters with metal, polyurethane and forged steel wheels, built for heavy equipment, dies, molds, and plant carts that move very heavy loads. Casters in this collection range from 750 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. Metal wheels roll with low effort and handle debris and heat. They are loud and can mark finished floors. Polyurethane (poly or urethane) treads are quiet, floor safe, and resist water and many chemicals. Forged steel wheels carry very heavy loads and handle impact, debris, and heat. They are loud and will mark finished floors. Match plate size, bolt pattern, and overall height before you order. Choose swivel casters when the cart must turn in place and rigid casters for straight travel. Forged steel aisle: forged steel casters. Wheel hub: replacement wheels.

Shop by type

3 types

Wheel = wheel diameter · capacity is per caster.

Durastar Xtreme heavy duty casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Polyurethane	Steel and Nylon	6, 8, 10 and 12 in	2,000 to 4,500 lb	-45°F to 180°F	quiet, floor-friendly and long wearing
Ductile iron	Steel	6, 8, 10 and 12 in	2,000 to 6,000 lb	-45°F to 800°F	heavy loads with better impact strength than cast iron
Rubber		6, 8, 10 and 12 in	750 to 1,300 lb	-40°F to 160°F	cushioned and quiet on finished floors
Semi-steel	Steel	8, 10 and 12 in	2,500 to 3,000 lb	-45°F to 800°F	rough floors, heat and heavy loads
Nylon		6, 8 and 10 in	2,000 to 3,000 lb	Up to 180°F	low rolling effort on smooth floors, handles wet areas
Phenolic		6 and 12 in	2,000 to 3,500 lb	Up to 250°F	hard and easy rolling on smooth, dry floors

Ratings are for single casters of Durastar Xtreme heavy duty casters, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
6 x 3 in	polyurethane, rubber and phenolic	750 to 6,000 lb
8 x 3 in	polyurethane, ductile iron and semi-steel	900 to 6,000 lb
10 x 3 in	polyurethane, ductile iron and semi-steel	1,100 to 6,000 lb
12 x 3 in	polyurethane, rubber and ductile iron	1,300 to 6,000 lb

Choosing Durastar Xtreme heavy duty casters

Load: plan on three casters carrying a four-caster cart [S2]; at 3,500 lb each, a common rating here, that is about 10,500 lb, and the 6,000 lb top rating covers about 18,000 lb.
Mount: most Durastar Xtreme heavy duty casters use a 5-1/4 x 7-1/4 in top plate; 4-1/2 x 6-1/4 in plates are listed too; match the bolt holes on your frame to the plate before ordering.
Floor: on Durastar Xtreme heavy duty casters, polyurethane and rubber are kinder to tile and finished floors; ductile iron, semi-steel, nylon and phenolic roll easier under heavy loads on smooth concrete.
Rig: swivel and rigid Durastar Xtreme heavy duty casters are listed.
Heat: among Durastar Xtreme heavy duty 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.

Durastar Xtreme heavy duty casters questions

How much weight can Durastar Xtreme heavy duty casters carry?

Single Durastar Xtreme heavy duty casters are rated 750 to 6,000 lb; most fall between 2,000 and 3,500 lb.

What top plate do Durastar Xtreme heavy duty casters use?

Most Durastar Xtreme heavy duty casters use 5-1/4 x 7-1/4 in. Others listed: 4-1/2 x 6-1/4 in.

What wheel material is most common on Durastar Xtreme heavy duty casters?

Polyurethane leads on Durastar Xtreme heavy duty casters, rated 2,000 to 4,500 lb per caster. Ductile iron is next at 2,000 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"

View All • 21 Plate Sizes

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