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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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Caster Shims & Weld Plates
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8" x 3" Polyurethane Casters

Diameter: 8, 10, 12 inTread: 4 inCapacity: up to 6,000 lb
8" x 3" Polyurethane Casters for warehouse carts on epoxy and smooth concrete. Catalog chips cover wheel diameters 8, 10, 12 in, polyurethane treads, and plate-mount frames. Bring plate and stem measurements when replacing unmarked casters so the new corners sit level. Harder poly rolls easier on smooth epoxy; softer poly cushions vibration on uneven slabs. These heavy-duty options cover everyday warehouse carts on epoxy and smooth concrete without jumping to extreme forged series.

Shop by type

3 types

Wheel = wheel diameter · capacity is per caster.

3500 lbs
TieredPricing
Hamilton Maxi-Duty Swivel Caster with 8" x 3" Superlast® Polyurethane (95A) on Forged Steel Wheel with 1 1/4" Precision Tapered Roller Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton S-MD-83SYT 8" x 3" Superlast Poly Swivel Caster – 3500 lb
Part # S-MD-83SYT
from $1,162.00
Volume pricing available
PolyurethanePlate
Load rating
3500 lbs
Diameter 8"
Capacity 3500 lbs
Wheel Polyurethane
Mount Plate
Plate Size 8-1/2" x 8-1/2"
More Details Less Details
Width 3"
Height 11"
Bolt Pattern 7" x 7"
Hamilton Maxi-Duty Swivel Caster with 8" x 3" Superlast® Polyurethane (95A) on Forged Steel...
Shop Product
6000 lbs
TieredPricing
Hamilton Maxi-Duty Swivel Caster with 12" x 4" Superlast Polyurethane (95A) on Forged Steel Wheel with 1 1/4" Precision Tapered Roller Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton S-MD-124SYT 12" x 4" Poly Swivel Caster – 6000 lb
Part # S-MD-124SYT
from $1,588.00
Volume pricing available
PolyurethanePlate
Load rating
6000 lbs
Diameter 12"
Capacity 6000 lbs
Wheel Polyurethane
Mount Plate
Plate Size 8-1/2" x 8-1/2"
More Details Less Details
Width 4"
Height 15-1/2"
Bolt Pattern 7" x 7"
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton Maxi-Duty Swivel Caster with 12" x 4" Superlast Polyurethane (95A) on Forged Steel...
Shop Product
5000 lbs
TieredPricing
Hamilton Maxi-Duty Swivel Caster with 10" x 4" Superlast Polyurethane (95A) on Forged Steel Wheel with 1 1/4" Precision Tapered Roller Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton S-MD-104SYT 10" x 4" Superlast Poly Swivel Caster – 5000 lb
Part # S-MD-104SYT
from $1,403.00
Volume pricing available
PolyurethanePlate
Load rating
5000 lbs
Diameter 10"
Capacity 5000 lbs
Wheel Polyurethane
Mount Plate
Plate Size 8-1/2" x 8-1/2"
More Details Less Details
Width 4"
Height 13"
Bolt Pattern 7" x 7"
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton Maxi-Duty Swivel Caster with 10" x 4" Superlast Polyurethane (95A) on Forged Steel...
Shop Product
3500 lbs
TieredPricing
Hamilton Maxi-Duty Rigid Caster with 8" x 3" Superlast® Polyurethane (95A) on Forged Steel Wheel with 1 1/4" Precision Tapered Roller Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton R-MD-83SYT 8" x 3" Superlast Polyurethane Rigid Caster – 3500 lb
Part # R-MD-83SYT
$746.00
Volume pricing available
PolyurethanePlate
Load rating
3500 lbs
Diameter 8"
Capacity 3500 lbs
Wheel Polyurethane
Mount Plate
Plate Size 8-1/2" x 8-1/2"
More Details Less Details
Width 3"
Height 11"
Bolt Pattern 7" x 7"
Hamilton Maxi-Duty Rigid Caster with 8" x 3" Superlast® Polyurethane (95A) on Forged Steel...
Shop Product
6000 lbs
TieredPricing
Hamilton Maxi-Duty Rigid Caster with 12" x 4" Superlast Polyurethane (95A) on Forged Steel Wheel with 1 1/4" Precision Tapered Roller Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton R-MD-124SYT 12" x 4" Superlast Poly Rigid Caster – 6000 lb
Part # R-MD-124SYT
$1,165.00
Volume pricing available
PolyurethanePlate
Load rating
6000 lbs
Diameter 12"
Capacity 6000 lbs
Wheel Polyurethane
Mount Plate
Plate Size 8-1/2" x 8-1/2"
More Details Less Details
Width 4"
Height 15-1/2"
Bolt Pattern 7" x 7"
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton Maxi-Duty Rigid Caster with 12" x 4" Superlast Polyurethane (95A) on Forged Steel...
Shop Product
5000 lbs
TieredPricing
Hamilton Maxi-Duty Rigid Caster with 10" x 4" Superlast Polyurethane (95A) on Forged Steel Wheel with 1 1/4" Precision Tapered Roller Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton R-MD-104SYT 10" x 4" Superlast Poly Rigid Caster – 5000 lb
Part # R-MD-104SYT
$1,016.00
Volume pricing available
PolyurethanePlate
Load rating
5000 lbs
Diameter 10"
Capacity 5000 lbs
Wheel Polyurethane
Mount Plate
Plate Size 8-1/2" x 8-1/2"
More Details Less Details
Width 4"
Height 13"
Bolt Pattern 7" x 7"
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton Maxi-Duty Rigid Caster with 10" x 4" Superlast Polyurethane (95A) on Forged Steel...
Shop Product

Maxi-Duty Caster Series with Superlast Polyurethane Wheels

For the extra tough jobs requiring protective polyurethane treads, Hamilton manufacturers these top-of-the-line Superlast® Wheels. The extra-thick (1") blue treads (hardness of 90-95 Shore A) are liquid cast and chemically bonded to solid-web, drop forged steel centers.

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