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All measurements indicate the wheel diameter by the tread width.

The below capacity ranges indicate the working (dynamic) load that each caster will support. A safety factor should be included in your formula to determine your required load rating per caster.

W/(C-1)=R W is total weight needed to move. C is total number of casters required. R is ideal load rating, with safety factor built in. Divide the total load weight by one less caster than you will use to safely determine load rating.

Plate dimensions shown are overall mounting plate size.
When replacing existing casters, select the closest plate size and verify bolt-hole compatibility.
BHP = Bolt Hole Pattern, shown under each plate.

BHP: 1-3/4″ × 2-7/8″, slotted to 3″
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: 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: 2-5/8” 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"
BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"
(3″ Wide Casters), Industry-Standard
(3″ Wide Casters), Industry-Standard
BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"
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"
BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"
View All • 21 Plate Sizes
View All • 21 Plate Sizes
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Caster Wheel Materials & Selection Guide

Caster Wheel Materials & Selection Guide
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Polyurethane Casters

Diameter: 4, 5, 6, 8 inTread: 2 inCapacity: up to 1,250 lb
Polyurethane casters here serve warehouse carts on epoxy and smooth concrete. Typical builds show wheel diameters 4, 5, 6, 8 in, polyurethane treads, and plate-mount frames. Pair swivel and rigid casters for tracking, or use total locks where the cart must park on a grade. Match bolt-hole spacing or stem diameter to the frame before you standardize a fleet. These medium-duty options cover everyday warehouse carts on epoxy and smooth concrete without jumping to extreme forged series.

Shop by type

4 types

Wheel = wheel diameter · capacity is per caster.

1250 lbs
TieredPricing
Hamilton S-528-EMB Standard Duty Swivel Caster - 8x2 Inch Ergo-Tech Polyurethane Wheel on Aluminum, Precision Bearings for Industrial Mobility Hamilton
Made to Order · 4-6 Wk
Hamilton S-528-EMB 8" x 2" Ergo-Tech Swivel Caster – 1250 lb
Part # S-528-EMB
from $173.00
Volume pricing available
PolyurethanePlate
Load rating
1250 lbs
Diameter 8"
Capacity 1250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 2"
Height 9-1/2"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton S-528-EMB Swivel Caster | 8" x 2" Ergo-Tech Wheel for Industrial Use Hamilton...
Shop Product
1250 lbs
TieredPricing
Hamilton S-526-EMB Swivel Caster - 6x2 Inch Ergo-Tech Polyurethane on Aluminum Wheel with Precision Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton S-526-EMB 6" x 2" Ergo-Tech Swivel Caster – 1250 lb
Part # S-526-EMB
from $109.00
Volume pricing available
PolyurethanePlate
Load rating
1250 lbs
Diameter 6"
Capacity 1250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 2"
Height 7-1/2"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton S-526-EMB Swivel Caster | 6" x 2" Ergo-Tech Wheel Hamilton S-526-EMB Standard Duty...
Shop Product
1250 lbs
TieredPricing
S-525-EMB Hamilton 5" x 2" Standard Duty Swivel Caster with Ergo-Tech Polyurethane Wheel and Sealed Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton S-525-EMB 5" x 2" Ergo-Tech Swivel Caster – 1250 lb
Part # S-525-EMB
from $105.00
Volume pricing available
PolyurethanePlate
Load rating
1250 lbs
Diameter 5"
Capacity 1250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 2"
Height 6-1/2"
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
S-525-EMB Hamilton Standard Duty Swivel Caster 5" x 2" Ergo-Tech Donut Tread Polyurethane (87A)...
Shop Product
1250 lbs
TieredPricing
Hamilton S-524-EMB Standard Duty Swivel Caster - 4" x 2" Ergo-Tech Polyurethane Wheel with Precision Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton S-524-EMB 4" x 2" Polyurethane Swivel Caster – 1250 lb
Part # S-524-EMB
from $102.00
Volume pricing available
PolyurethanePlate
Load rating
1250 lbs
Diameter 4"
Capacity 1250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 2"
Height 5-5/8"
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
S-524-EMB Hamilton Standard Duty Swivel Caster – Durable and Versatile 4" x 2" Ergo-Tech...
Shop Product
1250 lbs
TieredPricing
Hamilton R-528-EMB Standard Duty Rigid Caster - 8x2 Inch Ergo-Tech Polyurethane Wheel on Aluminum, Precision Bearings for Industrial Mobility Hamilton
Made to Order · 4-6 Wk
Hamilton R-528-EMB 8" x 2" Ergo-Tech Rigid Caster – 1250 lb
Part # R-528-EMB
from $164.00
Volume pricing available
PolyurethanePlate
Load rating
1250 lbs
Diameter 8"
Capacity 1250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 2"
Height 9-1/2"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton S-528-EMB Swivel Caster | 8" x 2" Ergo-Tech Wheel for Industrial Use Hamilton...
Shop Product
1250 lbs
TieredPricing
Hamilton R-526-EMB Rigid Caster - 6x2 Inch Ergo-Tech Polyurethane on Aluminum Wheel with Precision Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton R-526-EMB 6" x 2" Ergo-Tech Rigid Caster – 1250 lb
Part # R-526-EMB
from $102.00
Volume pricing available
PolyurethanePlate
Load rating
1250 lbs
Diameter 6"
Capacity 1250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 2"
Height 7-1/2"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton S-526-EMB Swivel Caster | 6" x 2" Ergo-Tech Wheel Hamilton R-526-EMB Standard Duty...
Shop Product
1250 lbs
TieredPricing
R-525-EMB Hamilton 5" x 2" Standard Duty Rigid Caster with Ergo-Tech Polyurethane Wheel and Sealed Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton R-525-EMB 5" x 2" Ergo-Tech Rigid Caster – 1250 lb
Part # R-525-EMB
from $90.00
Volume pricing available
PolyurethanePlate
Load rating
1250 lbs
Diameter 5"
Capacity 1250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 2"
Height 6-1/2"
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
R-525-EMB Hamilton Standard Duty Rigid Caster 5" x 2" Ergo-Tech Donut Tread Polyurethane (87A)...
Shop Product
1250 lbs
TieredPricing
Hamilton R-524-EMB Standard Duty Rigid Caster - 4" x 2" Ergo-Tech Polyurethane Wheel with Precision Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton R-524-EMB 4" x 2" Ergo-Tech Rigid Caster – 1250 lb
Part # R-524-EMB
from $102.00
Volume pricing available
PolyurethanePlate
Load rating
1250 lbs
Diameter 4"
Capacity 1250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 2"
Height 5-5/8"
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
R-524-EMB Hamilton Standard Duty Rigid Caster – Durable and Versatile 4" x 2" Ergo-Tech...
Shop Product

Hamilton Series EM Ergo-Tech Wheels

Capacity Range: 450 – 1,000 lbs | Ergonomic & Efficient

Ergonomic Design for Reduced Work-Related Injuries

The Hamilton Ergo-Tech Wheel is an ergonomist-recommended solution designed to minimize push/pull forces, thereby reducing work-related injuries. Its unique half-round tread and maintenance-free precision ball bearings ensure effortless rolling.

Advanced Wheel Technology

Our engineers have chosen a high energy, softer 87A durometer polyurethane for the Ergo-Tech. This ensures greater traction, repels foreign objects and debris, and operates quieter than most other urethanes, making it an ideal choice for various environments.

Why Choose Ergo-Tech?

Designed from the ground up, the Ergo-Tech wheel represents Hamilton's commitment to providing ergonomic, efficient, and high-quality wheel solutions for industrial needs. If you require higher durability with slightly higher push/pull forces, consider exploring our Ergo-Glide wheels.

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