Phenolic Casters, 4 x 4-1/2 Plate | Heat Rated

Diameter: 3-1/4 to 8 inTread: 2 inPlate: 4 x 4-1/2 inCapacity: 700 to 3,200 lb per caster

This page lists phenolic casters on a 4 x 4-1/2 in plate. Phenolic is the most common tread here, rated 700 to 3,200 lb per caster in 3-1/4, 4, 5, 6 and 8 in. Sets of 4 list 2,800 to 4,000 lb combined.

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6 types

Capacity shown is per caster (per wheel for wheels). How to measure →

Light-duty plateHardHigh capacityPlate 2‑3/8″ × 3‑5/8″Wheel 3″–5″up to 350 lb/caster3 styles
Medium-light plateHardHigh capacityPlate 3‑1/8″ × 4‑1/8″Wheel 3″–5″up to 350 lb/caster8 styles · Popular
Medium-duty plateHardHigh capacityPlate 4″ × 4‑1/2″Wheel 3‑1/4″–8″700–1,250 lb/caster48 styles
Heavy-duty plateHardHigh capacityPlate 4‑1/2″ × 6‑1/4″Wheel 4″–8″800–1,400 lb/caster8 styles
Stem mountHardHigh capacityStem 1/2″ threadedWheel 3″–5″up to 350 lb/caster3 styles
Total lockLocks wheelLocks swivelTotal-lock plate 4″ × 4‑1/2″Wheel 4″–8″up to 800 lb/caster13 styles

Caster Finder Find your caster in 3 steps Mount, size, capacity, narrowed to your exact spec in this collection.

Phenolic Casters, 4 x 4-1/2 Plate: buying guide

Phenolic casters on a 4 x 4-1/2 in plate in phenolic, 3-1/4 to 8 in wheels, rated 700 to 3,200 lb per caster.

Diameter 3-1/4 to 8 inTread 2 inPlate 4 x 4-1/2 in700 to 3,200 lb per caster

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

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Phenolic		3-1/4, 4, 5, 6 and 8 in	700 to 3,200 lb	-50°F to 250°F	hard and easy rolling on smooth, dry floors

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

Wheel sizes

Wheel	Treads	Rated
3-1/4 x 2 in	phenolic	700 lb
4 x 2 in	phenolic	800 lb
5 x 2 in	phenolic	1,000 to 3,200 lb
6 x 2 in	phenolic	1,250 lb
8 x 2 in	phenolic	1,250 lb

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

Load: plan on three casters carrying a four-caster cart [S2]; at 1,250 lb each, a common rating here, that is about 3,750 lb, and the 3,200 lb top rating covers about 9,600 lb.
Mount: most phenolic casters on a 4 x 4-1/2 in plate use a 4 x 4-1/2 in top plate; measure bolt hole centers on the old plate and compare.
Floor: on phenolic casters on a 4 x 4-1/2 in plate, phenolic suits smooth concrete and heavy loads, but is loud and hard on tile and wood.
Rig: swivel and rigid phenolic casters on a 4 x 4-1/2 in plate are listed, with side lock brake and total lock brake options.

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

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

Single phenolic casters on a 4 x 4-1/2 in plate are rated 700 to 3,200 lb; most fall between 800 and 1,250 lb.

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

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

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

Phenolic leads on phenolic casters on a 4 x 4-1/2 in plate, rated 700 to 3,200 lb per caster.

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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