Ground Support

Custom made to order. All sales final.

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.

Diameter: 10-1/2 to 21 inTread: 4, 5-1/8 and 6 inPlate: 6-1/8 x 7-1/2 in (most)Capacity: 1,000 to 4,200 lb per caster

Hamilton ground support casters in rubber. Rubber is the most common tread on these Hamilton ground support casters, rated 1,000 to 4,200 lb per caster in 10-1/2, 12, 16, 18 and 21 in. Brands: Hamilton.

Shop by type

5 types

Wheel = wheel diameter · capacity is per caster.

Hamilton ground support casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Rubber		10-1/2, 12, 16, 18 and 21 in	1,000 to 4,200 lb	-30°F to 120°F	cushioned and quiet on finished floors

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

Wheel sizes

Wheel	Treads	Rated
10-1/2 x 4 in	rubber	1,000 lb
12 x 4 in	rubber	1,200 lb
16 x 5-1/8 in	rubber	2,900 lb
18 x 5-1/8 in	rubber	3,300 lb
21 x 6 in	rubber	4,200 lb

Choosing Hamilton ground support casters

Load: plan on three casters carrying a four-caster cart [S2]; at 3,300 lb each, a common rating here, that is about 9,900 lb, and the 4,200 lb top rating covers about 12,600 lb.
Mount: most Hamilton ground support casters use a 6-1/8 x 7-1/2 in top plate; 5-1/2 x 7-1/2 in and 8-1/2 x 8-1/2 in plates are listed too; match the bolt holes on your frame to the plate before ordering.
Floor: on Hamilton 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 ground support casters are listed.

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

Hamilton ground support casters questions

How much weight can Hamilton ground support casters carry?

Single Hamilton ground support casters are rated 1,000 to 4,200 lb; most fall between 1,200 and 3,300 lb.

What top plate do Hamilton ground support casters use?

Most Hamilton ground support casters use 6-1/8 x 7-1/2 in. Other plates on Hamilton ground support casters: 5-1/2 x 7-1/2 in and 8-1/2 x 8-1/2 in.

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

Rubber leads on Hamilton ground support casters, rated 1,000 to 4,200 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"

View All • 21 Plate Sizes

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