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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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30MM Bore

Diameter: 6 to 10 inTread: 3 inCapacity: 1,500 to 2,250 lb per wheel
30MM bore wheels in polyurethane. Polyurethane on steel cores is the most common tread on these 30MM bore wheels, rated 1,500 to 2,250 lb per wheel in 6, 8 and 10 in.

3 options in this exact size and spec. See all casters by load capacity and mount type › or call 844-439-4335 for a cross-reference.

1850 lbs
TieredPricing
8" x 3" Polyurethane on Steel Keyed Drive Wheel | 30mm Bore - 1,850 lbs Capacity Per Wheel CasterHQ
Made to Order · 4-6 Weeks
8" x 3" Polyurethane Keyed Industrial Wheel – 1,850 lb
Part # HD-83-PS-KDW-30mm
$331.00
Volume pricing available
Polyurethane
Load rating
1850 lbs
Size8" x 3"
Capacity1850 lbs
MaterialPolyurethane
CoreSteel
More Details Less Details
Width 3"
Core Steel
Quick-fit wheel specs for replacement and procurement teams.
Shop Product
1500 lbs
TieredPricing
6" x 3" Polyurethane on Steel Keyed Drive Wheel | 30mm Bore - 1,500 lbs Capacity Per Wheel CasterHQ
Made to Order · 4-6 Weeks
6" x 3" Polyurethane Keyed Industrial Replacement Wheel – 1,500 lb · 30mm Bore
Part # HD-63-PS-KDW-30mm
$282.00
Volume pricing available
Polyurethane
Load rating
1500 lbs
Size6" x 3"
Capacity1500 lbs
MaterialPolyurethane
CoreSteel
More Details Less Details
Width 3"
Core Steel
Quick-fit wheel specs for replacement and procurement teams.
Shop Product
2250 lbs
TieredPricing
10" x 3" Polyurethane on Steel Keyed Drive Wheel | 30mm Bore - 2,250 lbs Capacity Per Wheel CasterHQ
Made to Order · 4-6 Weeks
10" x 3" Polyurethane Keyed Industrial Wheel – 2,250 lb
Part # HD-103-PS-KDW-30mm
$265.00
Volume pricing available
Polyurethane
Load rating
2250 lbs
Size10" x 3"
Capacity2250 lbs
MaterialPolyurethane
CoreSteel
More Details Less Details
Width 3"
Core Steel
Quick-fit wheel specs for replacement and procurement teams.
Shop Product

30MM bore wheels by tread

Tread Core Wheel sizes Rated per wheel Listed temperature Where it fits
Polyurethane Steel 6, 8 and 10 in 1,500 to 2,250 lb quiet, floor-friendly and long wearing

Ratings are for single wheels of 30MM bore wheels, from product fields [S1].

Wheel sizes

Wheel Treads Rated
6 x 3 in polyurethane 1,500 lb
8 x 3 in polyurethane 1,850 lb
10 x 3 in polyurethane 2,250 lb

Choosing 30MM bore wheels

  1. Load: divide the loaded weight by three for a four-wheel cart [S2]; at 2,250 lb each, 30MM bore wheels suit a loaded cart of about 6,750 lb.
  2. Floor: on 30MM bore wheels, polyurethane protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.

30MM bore wheels questions

How much weight can 30MM bore wheels carry?

Single 30MM bore wheels are rated 1,500 to 2,250 lb.

What wheel material is most common on 30MM bore wheels?

Polyurethane leads on 30MM bore wheels, rated 1,500 to 2,250 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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