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

These thermoplastic rubber (TPR) casters use a 4 x 4-1/2 in top plate for carts on finished floors. Casters in this collection range from 300 to 600 lb per caster. Wheels in this category range from 4 up to 8 in by 2 in wide. Thermoplastic rubber (TPR) is quiet, will not mark floors, and rolls over chips and grit. Soft rubber or TPR tread is the better pick when the floor has chips or grit. Match the 4 x 4-1/2 in plate, bolt pattern, and overall height before you order. Choose swivel casters when the cart must turn in place, rigid casters for straight travel, and add a brake when the cart needs to stay put. Read the listing for the exact wheel size, overall height, and mount shown. Confirm the load rating printed on the title before you order. Measure the old wheel or caster before you buy. TPR aisle: tpr casters. Plate aisle: plate casters.

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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