Spring Loaded

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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 Spring Loaded casters with Duralast polyurethane, ergonomic polyurethane and phenolic wheels, built for shop carts, equipment, and material handling carts that move heavier loads. Casters in this collection range from 600 to 1,200 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. 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. Phenolic rolls easily on smooth floors and handles dry heat, oil, and grease, but it is not made for water or washdown. It suits warehouse carts, toolboxes, and tool carts, and it is loud on rough floors. 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

3 types

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

Hamilton spring loaded casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Polyurethane	Cast iron	4, 5, 6 and 8 in	600 to 1,200 lb	-5°F to 160°F	quiet, floor-friendly and long wearing
Phenolic		4, 5, 6 and 8 in	620 to 1,200 lb	Up to 250°F	hard and easy rolling on smooth, dry floors

Ratings are for single casters of Hamilton spring loaded casters, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
4 x 2 in	polyurethane and phenolic	600 to 800 lb
5 x 2 in	polyurethane and phenolic	620 to 1,050 lb
6 x 2 in	polyurethane and phenolic	620 to 1,200 lb
8 x 2 in	polyurethane and phenolic	620 to 1,200 lb

Choosing Hamilton spring loaded casters

Load: divide the loaded weight by three for a four-caster cart [S2]. Among Hamilton spring loaded casters, a 1,050 lb caster then suits about 3,150 lb, and the strongest at 1,200 lb about 3,600 lb.
Mount: most Hamilton spring loaded casters use a 4-1/2 x 6-1/2 in top plate; check the bolt spacing on your frame against the plate size.
Floor: on Hamilton spring loaded casters, polyurethane is kinder to tile and finished floors; phenolic rolls easier under heavy loads on smooth concrete.
Rig: swivel and rigid Hamilton spring loaded casters are listed.

Related to Hamilton spring loaded casters: industrial casters.

Hamilton spring loaded casters questions

How much weight can Hamilton spring loaded casters carry?

Single Hamilton spring loaded casters are rated 600 to 1,200 lb; most fall between 620 and 1,050 lb.

What top plate do Hamilton spring loaded casters use?

Most Hamilton spring loaded casters use 4-1/2 x 6-1/2 in.

What wheel material is most common on Hamilton spring loaded casters?

Polyurethane leads on Hamilton spring loaded casters, rated 600 to 1,200 lb per caster. Among Hamilton spring loaded casters, phenolic is next at 620 to 1,200 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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