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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

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Durastar EX polyurethane on steel wheels

This collection holds EX with polyurethane and metal treads, made to replace worn wheels on carts, dollies, racks, and equipment. Wheels in this collection range from 3,000 to 6,000 lb per wheel. Wheels in this category range from 6 up to 12 inches in diameter with 3 to 4 in tread widths. Polyurethane (poly or urethane) treads are quiet, floor safe, and resist water and many chemicals. Metal wheels roll with low effort and handle debris and heat. They are loud and can mark finished floors. Match the bore, hub length, diameter, and tread width before you order. Order the axle and spacers if the old ones are worn. Read the listing for the exact wheel size, overall height, and mount shown. Confirm the load rating printed on the title before you order. Measure the old wheel or caster before you buy. Polyurethane aisle: polyurethane casters. Caster hub: heavy duty casters.

Shop by wheel type

4 types

Wheel = wheel diameter · capacity is per wheel.

3500 lbs
TieredPricing
Durastar 8" x 3" Heavy Duty Polyurethane on Steel Wheel, 3500 lbs Capacity and 1-15/16" Plain Bore Durastar
Ships in 1-3 Business Days
8" x 3" Polyurethane Steel Industrial Replacement Wheel – 3500 lb
Part # 830-EX-86
$100.00
Volume pricing available
Polyurethane
Load rating
3500 lbs
Size8" x 3"
Capacity3500 lbs
MaterialPolyurethane
CoreSteel
More Details Less Details
Width 3"
Core Steel
Temp Range -45°F to 180°F
Quick-fit wheel specs for replacement and procurement teams.
Shop Product
3000 lbs
TieredPricing
Durastar 6" x 3" Heavy Duty Polyurethane on Steel Wheel, 3000 lbs Capacity and 1-15/16" Plain Bore Durastar
Ships in 1-3 Business Days
6" x 3" Polyurethane Steel Industrial Replacement Wheel – 3000 lb
Part # 630-EX-86
$58.00
Volume pricing available
Polyurethane
Load rating
3000 lbs
Size6" x 3"
Capacity3000 lbs
MaterialPolyurethane
CoreSteel
More Details Less Details
Width 3"
Core Steel
Temp Range -45°F to 180°F
Quick-fit wheel specs for replacement and procurement teams.
Shop Product
6000 lbs
TieredPricing
Durastar 12" x 4" Heavy Duty Polyurethane on Steel Wheel, 6000 lbs Capacity and 2-7/16" Plain Bore Durastar
Ships in 1-3 Business Days
12" x 4" Polyurethane Steel Industrial Replacement Wheel – 6000 lb
Part # 1240-EX-87
$145.00
Volume pricing available
Polyurethane
Load rating
6000 lbs
Size12" x 4"
Capacity6000 lbs
MaterialPolyurethane
CoreSteel
More Details Less Details
Width 4"
Core Steel
Temp Range -45°F to 180°F
Quick-fit wheel specs for replacement and procurement teams.
Shop Product
4500 lbs
TieredPricing
Durastar 12" x 3" Heavy Duty Polyurethane on Steel Wheel, 4500 lbs Capacity and 1-15/16" Plain Bore Durastar
Ships in 1-3 Business Days
12" x 3" Polyurethane Industrial Replacement Wheel – 4500 lb
Part # 1230-EX-86
$133.00
Volume pricing available
Polyurethane
Load rating
4500 lbs
Size12" x 3"
Capacity4500 lbs
MaterialPolyurethane
CoreSteel
More Details Less Details
Width 3"
Core Steel
Temp Range -45°F to 180°F
Quick-fit wheel specs for replacement and procurement teams.
Shop Product
4000 lbs
TieredPricing
Durastar 10" x 3" Heavy Duty Polyurethane on Steel Wheel, 4000 lbs Capacity and 1-15/16" Plain Bore Durastar
Ships in 1-3 Business Days
10" x 3" Polyurethane Steel Industrial Replacement Wheel – 4000 lb
Part # 1030-EX-86
$115.00
Volume pricing available
Polyurethane
Load rating
4000 lbs
Size10" x 3"
Capacity4000 lbs
MaterialPolyurethane
CoreSteel
More Details Less Details
Width 3"
Core Steel
Temp Range -45°F to 180°F
Quick-fit wheel specs for replacement and procurement teams.
Shop Product

Durastar EX polyurethane on steel wheels by tread

Tread Core Wheel sizes Rated per wheel Listed temperature Where it fits
Polyurethane Steel 6, 8, 10 and 12 in 3,000 to 6,000 lb -45°F to 180°F quiet, floor-friendly and long wearing

Ratings are for single wheels of Durastar EX polyurethane on steel wheels, from product fields [S1].

Wheel sizes

Wheel Treads Rated
6 x 3 in polyurethane 3,000 lb
8 x 3 in polyurethane 3,500 lb
10 x 3 in polyurethane 4,000 lb
12 x 3 in polyurethane 4,500 lb
12 x 4 in polyurethane 6,000 lb

Choosing Durastar EX polyurethane on steel wheels

  1. Load: plan on three wheels carrying a four-wheel cart [S2]; at 4,500 lb each, a common rating here, that is about 13,500 lb, and the 6,000 lb top rating covers about 18,000 lb.
  2. Floor: on Durastar EX polyurethane on steel wheels, polyurethane protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.

Related to Durastar EX polyurethane on steel wheels: caster wheels and 12 x 4 in polyurethane wheels.

Durastar EX polyurethane on steel wheels questions

How much weight can Durastar EX polyurethane on steel wheels carry?

Single Durastar EX polyurethane on steel wheels are rated 3,000 to 6,000 lb.

What wheel material is most common on Durastar EX polyurethane on steel wheels?

Polyurethane leads on Durastar EX polyurethane on steel wheels, rated 3,000 to 6,000 lb per wheel.

Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com

Sources

  • [S1] CasterHQ product fields (rated load, diameter, width, wheel and core material, temperature range, mount) and product descriptions for the items on this page, pulled October 20, 2026.
  • [S2] Preferred Equipment casters and wheels quick guide PDF (prefeq.com): load sizing on one less caster, wheel types and floor notes.

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