Hamilton Spinfinity ZFWH Casters · Up to 2,200 lb · 4"–8" · Polyurethane & Cast Iron

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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 Spinfinity Zfwh casters with Duralast polyurethane, ergonomic polyurethane and Duralast XC polyurethane wheels, built for shop carts, equipment, and material handling carts that move heavier loads. Casters in this collection range from 450 to 2,500 lb per caster. Wheels in this category range from 4 up to 8 inches in diameter with a 2 in tread width. The collection includes swivel and rigid models. Kingpinless swivels hold up better under shock and repeat loads. Duralast polyurethane treads are quiet, protect floors, and carry heavy loads with low rolling effort. Ergonomic polyurethane wheels are made to lower push effort, which helps workers move heavy carts by hand. Duralast XC polyurethane treads are quiet, protect floors, and carry heavy loads with low rolling effort. 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. Polyurethane aisle: polyurethane casters. Wheel hub: replacement wheels.

Shop by wheel material

12 types

Rubber and polyurethane favor floor protection; phenolic and steel favor heavy capacity. Compare materials →

Hamilton Spinfinity ZFWH casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Polyurethane	Cast iron and Aluminum	4, 5, 6 and 8 in	450 to 2,025 lb	-5°F to 160°F	quiet, floor-friendly and long wearing
Nylon		4, 5, 6 and 8 in	2,000 to 2,500 lb	-30°F to 220°F	low rolling effort on smooth floors, handles wet areas
Cast iron		4, 5, 6 and 8 in	1,000 to 2,500 lb	-40°F to 320°F	heat, chips and heavy loads on rough floors
Steel		5 and 6 in	1,600 to 2,000 lb	-22°F to 750°F	heavy loads and track

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

Wheel sizes

Wheel	Treads	Rated
4 x 2 in	polyurethane, nylon and cast iron	450 to 2,000 lb
5 x 2 in	polyurethane, steel and nylon	600 to 2,000 lb
6 x 2 in	polyurethane, nylon and cast iron	800 to 2,300 lb
8 x 2 in	polyurethane, nylon and cast iron	1,200 to 2,500 lb

Choosing Hamilton Spinfinity ZFWH casters

Load: divide the loaded weight by three for a four-caster cart [S2]. Among Hamilton Spinfinity ZFWH casters, a 1,950 lb caster then suits about 5,850 lb, and the strongest at 2,500 lb about 7,500 lb.
Mount: most Hamilton Spinfinity ZFWH casters use a 4 x 4-1/2 in top plate; 4 x 5 in plates are listed too; match the bolt holes on your frame to the plate before ordering.
Floor: on Hamilton Spinfinity ZFWH casters, polyurethane is kinder to tile and finished floors; nylon, cast iron and steel roll easier under heavy loads on smooth concrete.
Rig: rigid and swivel Hamilton Spinfinity ZFWH casters are listed.
Heat: among Hamilton Spinfinity ZFWH casters, the highest listed range is -22°F to 750°F on steel; check the temperature field on each listing before oven or hot-room use.

Related to Hamilton Spinfinity ZFWH casters: industrial casters, 8 x 2 in polyurethane casters and 5 x 2 in cast iron casters.

Hamilton Spinfinity ZFWH casters questions

How much weight can Hamilton Spinfinity ZFWH casters carry?

Single Hamilton Spinfinity ZFWH casters are rated 450 to 2,500 lb; most fall between 975 and 1,950 lb.

What top plate do Hamilton Spinfinity ZFWH casters use?

Most Hamilton Spinfinity ZFWH casters use 4 x 4-1/2 in. Other plates on Hamilton Spinfinity ZFWH casters: 4 x 5 in.

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

Polyurethane leads on Hamilton Spinfinity ZFWH casters, rated 450 to 2,025 lb per caster. Among Hamilton Spinfinity ZFWH casters, nylon is next at 2,000 to 2,500 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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