TPR Casters, 4 x 4-1/2 Plate | Non-Marking

Diameter: 4 to 8 inTread: 2 inPlate: 4 x 4-1/2 inCapacity: 300 to 600 lb per caster

TPR casters on a 4 x 4-1/2 in plate with rubber wheels. Rubber on polyolefin cores is the most common tread here, rated 300 to 600 lb per caster in 4, 5, 6 and 8 in. Replacement wheels are listed too, rated 450 lb each.

Shop by type

4 types

Wheel = wheel diameter · capacity is per caster.

TPR casters on a 4 x 4-1/2 in plate by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Rubber	Polyolefin	4, 5, 6 and 8 in	300 to 600 lb	-40°F to 180°F	cushioned and quiet on finished floors

Ratings are for single casters of TPR casters on a 4 x 4-1/2 in plate, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
4 x 2 in	rubber	300 to 450 lb
5 x 2 in	rubber	500 lb
6 x 2 in	rubber	500 to 600 lb
8 x 2 in	rubber	600 lb

Choosing TPR casters on a 4 x 4-1/2 in plate

Load: plan on three casters carrying a four-caster cart [S2]; TPR casters on a 4 x 4-1/2 in plate rated 600 lb each then carry about 1,800 lb.
Mount: most TPR casters on a 4 x 4-1/2 in plate use a 4 x 4-1/2 in top plate; check the bolt spacing on your frame against the plate size.
Floor: on TPR casters on a 4 x 4-1/2 in plate, rubber protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.
Rig: swivel and rigid TPR casters on a 4 x 4-1/2 in plate are listed, with side lock brake options.

Related to TPR casters on a 4 x 4-1/2 in plate: 4 inch solid polyurethane wheel casters 3-8 inch wheels, 5 x 2 in rubber casters and 6 x 2 in rubber casters.

TPR casters on a 4 x 4-1/2 in plate questions

How much weight can TPR casters on a 4 x 4-1/2 in plate carry?

Single TPR casters on a 4 x 4-1/2 in plate are rated 300 to 600 lb; most fall between 500 and 600 lb.

What top plate do TPR casters on a 4 x 4-1/2 in plate use?

Most TPR casters on a 4 x 4-1/2 in plate use 4 x 4-1/2 in.

What wheel material is most common on TPR casters on a 4 x 4-1/2 in plate?

Rubber leads on TPR casters on a 4 x 4-1/2 in plate, rated 300 to 600 lb per caster.

Are replacement wheels sold for TPR casters on a 4 x 4-1/2 in plate?

Yes. Wheel-only listings for TPR casters on a 4 x 4-1/2 in plate are here, sized 4 in; measure bore and hub length before you order.

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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