Orange Poly-on-Aluminum Casters

Plate sizes: 4 x 4-1/2Bolt holes: 2-3/8 x 3-5/8 slotted to 3 x 3; 2-5/8 x 3-3/8 slotted to 3 x 3; 2-5/8 x 3-5/8 slotted to 3 x 3; 2-5/8 x 3-5/8Diameter: 4, 5, 6, 8 inTread: 2 inCapacity: up to 5,000 lb

Match a 4 x 4-1/2 top plate when bolting casters under warehouse carts on epoxy and smooth concrete. You will see wheel diameters 4, 5, 6, 8 in, polyurethane and steel treads, and capacities 1,000 to 5,000 lb across the SKUs listed below. Pair swivel and rigid casters for tracking, or use total locks where the cart must park on a grade.

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4 types

Wheel = wheel diameter · capacity is per caster.

5000 lbs

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8" x 2" Orange Poly on Aluminum Total Lock Caster Set · Model HQ2180S-PL1-PAR-ORG-SET2L2R · 5,000 lb set of 4

Part # HQ2180S-PL1-PAR-ORG-SET2L2R

from $497.00

Volume pricing available

PolyurethanePlate

Load rating

5000 lbs

Diameter 8"

Capacity 5000 lbs

Wheel Polyurethane

Mount Plate

Plate Size 4" x 4-1/2"

More Details Less Details

Width 2"

Height 9-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Core Aluminum

Rig Type Rigid with Brake

Brake Total Lock Brake

Frame Zinc Plated Steel

8" x 2" Total Lock Caster Set of 4 | 2 Locking & 2...

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5000 lbs

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8" x 2" Orange Poly on Aluminum Total Lock Caster Set · Model HQ2180S-PL1-PAR-ORG-SET2L2S · 5,000 lb set of 4

Part # HQ2180S-PL1-PAR-ORG-SET2L2S

from $503.00

Volume pricing available

PolyurethanePlate

Load rating

5000 lbs

Diameter 8"

Capacity 5000 lbs

Wheel Polyurethane

Mount Plate

Plate Size 4" x 4-1/2"

More Details Less Details

Width 2"

Height 9-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Core Aluminum

Rig Type Swivel with Total Lock Brake

Brake Total Lock Brake

Frame Zinc Plated Steel

8" x 2" Total Lock Caster Set of 4 | 2 Locking & 2...

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1000 lbs

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4" x 2" Polyurethane on Aluminum Dual Wheel Caster – 1,000 lb

Part # C47CS420TUA63M-03-DW

from $183.00

Volume pricing available

PolyurethanePlate

Load rating

1000 lbs

Diameter 4"

Capacity 1000 lbs

Wheel Polyurethane

Mount Plate

Plate Size 4" x 4-1/2"

More Details Less Details

Width 2"

Height 5-5/8"

Bolt Pattern 2-3/8" x 3-5/8" slotted to 3" x 3"

Frame Zinc Plated Steel

4" Dual Wheel CastersDual Wheel Caster - 1,000 lbs Capacity Per CasterThis listing is...

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1000 lbs

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4" x 2" Polyurethane on Aluminum Rigid Dual Wheel Caster – 1,000 lb

Part # C47CR420DUA63MDW-03

from $166.00

Volume pricing available

PolyurethanePlate

Load rating

1000 lbs

Diameter 4"

Capacity 1000 lbs

Wheel Polyurethane

Mount Plate

Plate Size 4" x 4-1/2"

More Details Less Details

Width 2"

Height 5-5/8"

Bolt Pattern 2-3/8" x 3-5/8" slotted to 3" x 3"

Rig Type Rigid

Brake No Brake

Frame Zinc Plated Steel

4" Rigid Dual Wheel CastersDual Wheel Caster - 1,000 lbs Capacity Per CasterThis listing...

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1500 lbs

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5" x 2" Ductile Steel Rigid Caster – 1,500 lb

Part # HQ2250R-PL1-DSR

from $52.00

Volume pricing available

Ductile IronPlate

Load rating

1500 lbs

Diameter 5"

Capacity 1500 lbs

Wheel Ductile Iron

Mount Plate

Plate Size 4" x 4-1/2"

More Details Less Details

Width 2"

Height 6-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Core Steel

Temp Range -45°F to 800°F

Rig Type Rigid

Brake No Brake

Frame Zinc Plated Steel

5" x 2" Kingpinless Rigid Caster | Ductile Steel Wheel | 1,500 lbs load...

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Orange Sirius Heavy Duty “Donut” Polyurethane on Aluminum Swivel Casters

Sirius heavy duty donut polyurethane on aluminum casters are engineered for high-capacity material handling in wash-down and corrosion-prone environments. The aluminum core resists rust and reduces wheel weight, while the polyurethane tread delivers floor protection and lower rolling resistance.

Wheel diameters

4"–8" (series-dependent)

Typical load range

Up to ~1,250 lbs per caster (varies by size/config)

Best environments

Wet, wash-down, chemical exposure, corrosion risk

Key limitation

Not intended for high-impact / shock-load abuse

Engineering guidance

Why specify polyurethane on aluminum

Aluminum core: corrosion resistance for wash-down and chemical exposure
Polyurethane tread: non-marking floor protection with smoother roll than rubber
Lower rolling resistance: supports ergonomic push/pull performance on smooth floors

When to choose a different wheel/core

Impact / shock loading: consider tougher cores and wheel constructions designed for abuse
Rough floors / debris: consider tread profiles and materials optimized for obstacles and seams
Powered towing: specify a solution designed for continuous towing loads and duty cycles

Common applications

Food processing and wash-down carts
Hospitals, labs, and pharma facilities
Industrial material handling where corrosion is a concern
Operations targeting reduced push/pull force and floor protection

Related wheel materials

Rubber wheels for higher compliance on uneven floors
Phenolic wheels for dry, smooth floors and high capacity
Steel wheels for controlled environments where floor protection is not needed

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

Plate Casters

Stem Casters

Stainless Casters

Ergonomic Casters

Leveling Casters

Orange Poly-on-Aluminum Casters

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Orange Sirius Heavy Duty “Donut” Polyurethane on Aluminum Swivel Casters

Engineering guidance