Spinfinity Kingpinless - Capacity up to 15,600

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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.

These Hamilton Spinfinity kingpinless casters fit heavy equipment, dies, molds, and plant carts that move very heavy loads. Casters in this collection range from 4,000 to 15,000 lb per caster. Wheels are up to 18 x 9 in swivel and rigid models. Kingpinless swivels hold up better under shock and repeat loads. Wheel options include polyurethane, nylon, phenolic, and forged steel, so match the tread to the floor and the load. Softer polyurethane or soft rubber or TPR tread is the better pick when the floor has chips or grit. Match the 8-1/2 x 8-1/2 in plate, 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. Heavy duty hub: heavy duty casters. Plate aisle: plate casters.

Shop by type

3 types

Wheel = wheel diameter · capacity is per caster.

Hamilton Spinfinity kingpinless casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Polyurethane	Cast iron	12, 13, 15, 16 and 18 in	4,800 to 15,000 lb	-70°F to 175°F	quiet, floor-friendly and long wearing
Rubber	Steel	13, 15, 16 and 18 in	4,000 to 9,600 lb	0°F to 175°F	cushioned and quiet on finished floors

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

Wheel sizes

Wheel	Treads	Rated
12 x 5-1/2 in	polyurethane	4,800 to 5,800 lb
13 x 5-1/2 in	polyurethane and rubber	4,000 to 6,300 lb
15 x 9 in	polyurethane and rubber	7,500 to 11,800 lb
16 x 7 in	polyurethane and rubber	6,200 to 9,800 lb
18 x 9 in	polyurethane and rubber	9,600 to 15,000 lb

Choosing Hamilton Spinfinity kingpinless casters

Load: divide the loaded weight by three for a four-caster cart [S2]. Among Hamilton Spinfinity kingpinless casters, a 9,800 lb caster then suits about 29,400 lb, and the strongest at 15,000 lb about 45,000 lb.
Mount: most Hamilton Spinfinity kingpinless casters use a 8-1/2 x 8-1/2 in top plate; match the bolt holes on your frame to the plate before ordering.
Floor: on Hamilton Spinfinity kingpinless casters, polyurethane and rubber protect finished floors and run quietly; check the rating if the cart also crosses rough concrete.
Rig: swivel and rigid Hamilton Spinfinity kingpinless casters are listed.

Related to Hamilton Spinfinity kingpinless casters: industrial casters, rubber casters and polyurethane casters.

Hamilton Spinfinity kingpinless casters questions

How much weight can Hamilton Spinfinity kingpinless casters carry?

Single Hamilton Spinfinity kingpinless casters are rated 4,000 to 15,000 lb; most fall between 5,800 and 9,800 lb.

What top plate do Hamilton Spinfinity kingpinless casters use?

Most Hamilton Spinfinity kingpinless casters use 8-1/2 x 8-1/2 in.

What wheel material is most common on Hamilton Spinfinity kingpinless casters?

Polyurethane leads on Hamilton Spinfinity kingpinless casters, rated 4,800 to 15,000 lb per caster. Among Hamilton Spinfinity kingpinless casters, rubber is next at 4,000 to 9,600 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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