4 x 4-1/2 Plate Casters | 180 to 4,800 lb

These 4 x 4-1/2 plate casters mount on the most common industrial top plate size for carts, racks, and fixtures. Casters in this collection range from about 180 to 4,800 lb per caster. Brands on this page include Albion, Colson, and P&H. Wheel materials include polyurethane (poly or urethane), rubber, nylon, and phenolic. Soft polyurethane on aluminum (~85 Shore A) or TPR is the better pick when the floor has chips or debris. Measure the old plate and bolt pattern before you order so the new caster drops in. 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. Capacities below are per caster unless a listing says set. Broader plate aisle: plate casters. Common size sibling: 4 x 2 casters and wheels.

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12 types

Wheel = wheel diameter · capacity is per caster.

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

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

4 x 4-1/2 in plate casters in polyurethane, rubber and nylon, 4 to 8 in wheels, rated 250 to 2,000 lb per caster.

Diameter 4 to 8 inTread 1-1/4, 1-1/2 and 2 inPlate 4 x 4-1/2 in250 to 2,000 lb per caster

Capacity on this hub

Band	Rating	Notes
Light / mid plate	About 180 to 1,200 lb per caster	Smaller poly and rubber
Cart workhorse	About 1,200 to 3,000 lb per caster	Most 5 to 8 in poly
Verified top	About 3,000 to 4,800 lb per caster	True max 4,800; not legacy 2,000

Admin ACTIVE for plate-size-4-x-4-1-2-popular, October 26, 2026 (1,891 ACTIVE; per-caster about 180 to 4,800) [S1].

Questions

Why not 2,000 lb in the title?

Older SEO stopped at 2,000 lb. Verified active caster titles reach 4,800 lb per caster on this plate. H1 and SEO follow the true max.

What is a 4 x 4-1/2 plate?

It is the common industrial top plate about 4 by 4-1/2 inches with slotted bolt holes. Confirm hole centers against your cart before ordering.

Jordan Wilson, CasterHQ · reviewed October 26, 2026 · 844-439-4335 · info@casterhq.com

Sources

[S1] CasterHQ Admin products for plate-size-4-x-4-1-2-popular, pulled October 26, 2026.
[S2] Mapp / Connection plate-size filters; Albion / Colson / P&H 4x4.5 series literature.
[S3] GSC 28d audit: 4x4.5 plate casters cluster.

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"

View All • 21 Plate Sizes

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