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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 - Rigid

Diameter: 3, 3-1/2, 4, 5 inTread: 1-1/4 inCapacity: up to 325 lb
This collection gathers plate-mount casters used on warehouse carts on epoxy and smooth concrete. Catalog chips cover wheel diameters 3, 3-1/2, 4, 5 in, polyurethane and polyolefin treads, and capacities 250 to 325 lb. Softer treads quiet finished floors; harder compounds last longer on chips, heat, and rough concrete. Match bolt-hole spacing or stem diameter to the frame before you standardize a fleet. These light-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.

325 lbs
TieredPricing
Durastar 5" x 1-1/4" Polyurethane on Polyolefin Swivel Caster - 325 lb Capacity, Choose Top Plate Option Durastar
Ships in 1-3 Business Days
5" x 1-1/4" Polyurethane Swivel Caster – 325 lb · Model 21-S-514-PPU-34
Part # 21-S-514-PPU-34
from $27.00
Volume pricing available
PolyurethanePlate
Load rating
325 lbs
Diameter 5"
Capacity 325 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 1-1/4"
Height 6-1/4"
Core Polyolefin
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Durastar 5" x 1-1/4" Polyurethane on Polyolefin Swivel Caster - 325 lb Capacity Product...
Shop Product
300 lbs
TieredPricing
Durastar 4" x 1-1/4" Polyurethane on Polyolefin Swivel Caster - 300 lb Capacity, Choose Top Plate Option Durastar
Ships in 1-3 Business Days
4" x 1-1/4" Polyurethane Polyolefin Swivel Caster – 300 lb
Part # 21-S-414-PPU-34
from $25.00
Volume pricing available
PolyurethanePlate
Load rating
300 lbs
Diameter 4"
Capacity 300 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 1-1/4"
Height 5-1/8"
Core Polyolefin
Temp Range -45°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Durastar 4" x 1-1/4" Polyurethane on Polyolefin Swivel Caster - 300 lb Capacity Product...
Shop Product
275 lbs
TieredPricing
Durastar 3-1/2" x 1-1/4" Polyurethane on Polyolefin Swivel Caster - 275 lb Capacity, Choose Top Plate Option Durastar
Ships in 1-3 Business Days
3-1/2" x 1-1/4" Polyurethane Swivel Caster – 275 lb · Model 21-S-3514-PPU-34
Part # 21-S-3514-PPU-34
from $23.00
Volume pricing available
PolyurethanePlate
Load rating
275 lbs
Diameter 3-1/2"
Capacity 275 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 1-1/4"
Height 4-5/8"
Core Polyolefin
Temp Range -40°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Durastar 3-1/2" x 1-1/4" Polyurethane on Polyolefin Swivel Caster - 275 lb Capacity Product...
Shop Product
250 lbs
TieredPricing
Durastar 3" x 1-1/4" Polyurethane on Polyolefin Swivel Caster - 250 lb Capacity, Choose Top Plate Option Durastar
Ships in 1-3 Business Days
3" x 1-1/4" Polyurethane Swivel Caster – 250 lb
Part # 21-S-314-PPU-34
from $21.00
Volume pricing available
PolyurethanePlate
Load rating
250 lbs
Diameter 3"
Capacity 250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 1-1/4"
Height 4-3/16"
Core Polyolefin
Temp Range -40°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Durastar 3" x 1-1/4" Polyurethane on Polyolefin Swivel Caster - 250 lb Capacity Product...
Shop Product
325 lbs
TieredPricing
Durastar 5" x 1-1/4" Polyurethane on Polyolefin Rigid Caster - 325 lb Capacity, Choose Top Plate Option Durastar
Ships in 1-3 Business Days
5" x 1-1/4" Polyurethane Rigid Caster – 325 lb
Part # 21-R-514-PPU-34
from $25.00
Volume pricing available
PolyurethanePlate
Load rating
325 lbs
Diameter 5"
Capacity 325 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 1-1/4"
Height 6-1/4"
Core Polyolefin
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Durastar 5" x 1-1/4" Polyurethane on Polyolefin Rigid Caster - 325 lb Capacity Product...
Shop Product
300 lbs
TieredPricing
Durastar 4" x 1-1/4" Polyurethane on Polyolefin Rigid Caster - 300 lb Capacity, Choose Top Plate Option Durastar
Ships in 1-3 Business Days
4" x 1-1/4" Polyurethane on Polyolefin Rigid Caster – 300 lb
Part # 21-R-414-PPU-34
from $23.00
Volume pricing available
PolyurethanePlate
Load rating
300 lbs
Diameter 4"
Capacity 300 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 1-1/4"
Height 5-1/8"
Core Polyolefin
Temp Range -45°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Durastar 4" x 1-1/4" Polyurethane on Polyolefin Rigid Caster - 300 lb Capacity Product...
Shop Product
275 lbs
TieredPricing
Durastar 3-1/2" x 1-1/4" Polyurethane on Polyolefin Rigid Caster - 275 lb Capacity, Choose Top Plate Option Durastar
Ships in 1-3 Business Days
3-1/2" x 1-1/4" Polyurethane Rigid Caster – 275 lb · Model 21-R-3514-PPU-34
Part # 21-R-3514-PPU-34
from $21.00
Volume pricing available
PolyurethanePlate
Load rating
275 lbs
Diameter 3-1/2"
Capacity 275 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 1-1/4"
Height 4-5/8"
Core Polyolefin
Temp Range -40°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Durastar 3-1/2" x 1-1/4" Polyurethane on Polyolefin Rigid Caster - 275 lb Capacity Product...
Shop Product
250 lbs
TieredPricing
Durastar 3" x 1-1/4" Polyurethane on Polyolefin Rigid Caster - 250 lb Capacity, Choose Top Plate Option Durastar
Ships in 1-3 Business Days
3" x 1-1/4" Polyurethane on Polyolefin Rigid Caster – 250 lb
Part # 21-R-314-PPU-34
from $20.00
Volume pricing available
PolyurethanePlate
Load rating
250 lbs
Diameter 3"
Capacity 250 lbs
Wheel Polyurethane
Mount Plate
More Details Less Details
Width 1-1/4"
Height 4-3/16"
Core Polyolefin
Temp Range -40°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Durastar 3" x 1-1/4" Polyurethane on Polyolefin Rigid Caster - 250 lb Capacity Product...
Shop Product

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