Dual-Whl Ground Support

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Each Hamilton product is custom manufactured for your order (lead time is shown on each product page). Please confirm all specs before checkout, since made-to-order items aren't eligible for returns, exchanges or refunds. Need help? Call 844-439-4335 or email info@casterhq.com and we'll verify fit for you.

This collection holds Dual-Whl Ground Support casters with pneumatic wheels, built for heavy equipment, dies, molds, and plant carts that move very heavy loads. Casters in this collection are rated 7,500 lb per caster. The collection includes swivel and rigid models. Dual wheel casters split the load over two wheels and swivel with less effort under heavy loads. Air filled and flat free tires cushion the load and roll over gravel, grass, cracks, and debris. 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. Read the listing for the exact wheel size, overall height, and mount shown. Confirm the load rating printed on the title before you order. Measure the old wheel or caster before you buy. Check the floor type and the heaviest load the cart will carry before you choose. Pneumatic aisle: pneumatic casters. Wheel hub: replacement wheels.

Shop by type

5 types

Wheel = wheel diameter · capacity is per caster.

Hamilton dual-whl ground support casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Rubber	Steel	10-1/2, 12, 16, 18 and 21 in	1,800 to 7,500 lb	-30°F to 120°F	cushioned and quiet on finished floors

Ratings are for single casters of Hamilton dual-whl ground support casters, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
10-1/2 x 4 in	rubber	1,800 lb
12 x 4 in	rubber	2,100 lb
16 x 5-1/8 in	rubber	5,200 lb
18 x 5-1/8 in	rubber	5,900 lb
21 x 6 in	rubber	7,500 lb

Choosing Hamilton dual-whl ground support casters

Load: divide the loaded weight by three for a four-caster cart [S2]. Among Hamilton dual-whl ground support casters, a 5,900 lb caster then suits about 17,700 lb, and the strongest at 7,500 lb about 22,500 lb.
Mount: most Hamilton dual-whl ground support casters use a 8-1/2 x 8-1/2 in top plate; 4-1/2 x 6-1/2 in and 6-1/8 x 7-1/2 in plates are listed too; match the bolt holes on your frame to the plate before ordering.
Floor: on Hamilton dual-whl ground support casters, rubber protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.
Rig: swivel and rigid Hamilton dual-whl ground support casters are listed.

Related to Hamilton dual-whl ground support casters: industrial casters, 10 in dia. pneumatic casters and 12 in dia. pneumatic casters.

Hamilton dual-whl ground support casters questions

How much weight can Hamilton dual-whl ground support casters carry?

Single Hamilton dual-whl ground support casters are rated 1,800 to 7,500 lb; most fall between 2,100 and 5,900 lb.

What top plate do Hamilton dual-whl ground support casters use?

Most Hamilton dual-whl ground support casters use 8-1/2 x 8-1/2 in. Other plates on Hamilton dual-whl ground support casters: 4-1/2 x 6-1/2 in and 6-1/8 x 7-1/2 in.

What wheel material is most common on Hamilton dual-whl ground support casters?

Rubber leads on Hamilton dual-whl ground support casters, rated 1,800 to 7,500 lb per caster.

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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