Durastar 30 series polyurethane casters

This collection holds Polyurethane On Glass Filled Nylon Mu 10mm Thick Tread casters, built for shop carts, equipment, and material handling carts that move heavier loads. Casters in this collection range from 800 to 1,250 lb per caster. Wheels in this category range from 4 up to 8 inches in diameter with a 2 in tread width. The collection includes swivel and rigid models. Polyurethane (poly or urethane) treads are quiet, floor safe, and resist water and many chemicals. Nylon rolls easily, resists water and many chemicals, and is hard, so it is loud on rough floors. Softer polyurethane or soft rubber or TPR tread is the better pick when the floor has chips or grit. Match plate size, bolt pattern, and overall height before you order. Choose swivel casters when the cart must turn in place and rigid casters for straight travel. Polyurethane aisle: polyurethane casters. Wheel hub: replacement wheels.

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4 types

Wheel = wheel diameter · capacity is per caster.

1250 lbs

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Durastar Medium Heavy Duty 30 Series - 8" x 2" Polyurethane on Glass-filled Nylon Swivel Caster - 1250 lb Capacity, 4 x 4-1/2 Top Plate | Choose Bearing Options Durastar

Ships in 1-3 Business Days

8" x 2" Polyurethane on Nylon Swivel Caster – 1250 lb

Part # 30-S-820-MU-03

from $50.00

Volume pricing available

NylonPlate

Load rating

1250 lbs

Size8" x 2"

Capacity1250 lbs

WheelNylon

MountPlate 4" x 4-1/2"

TypeSwivel

More Details Less Details

Width 2"

Height 9-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Temp Range Up to 180°F

Rig Type Swivel

Brake No Brake

Frame Zinc Plated Steel

Durastar Medium Heavy Duty 30 Series - 8" x 2" Polyurethane on Glass-filled Nylon...

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1200 lbs

TieredPricing

Durastar Medium Heavy Duty 30 Series - 6" x 2" Polyurethane on Glass-filled Nylon Swivel Caster - 1200 lb Capacity, 4 x 4-1/2 Top Plate | Choose Bearing Options Durastar

Ships in 1-3 Business Days

6" x 2" Polyurethane on Nylon Swivel Caster – 1200 lb

Part # 30-S-620-MU-03

from $49.00

Volume pricing available

NylonPlate

Load rating

1200 lbs

Size6" x 2"

Capacity1200 lbs

WheelNylon

MountPlate 4" x 4-1/2"

TypeSwivel

More Details Less Details

Width 2"

Height 7-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Temp Range -45°F to 180°F

Rig Type Swivel

Brake No Brake

Frame Zinc Plated Steel

Durastar Medium Heavy Duty 30 Series - 6" x 2" Polyurethane on Glass-filled Nylon...

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1000 lbs

TieredPricing

Durastar Medium Heavy Duty 30 Series - 5" x 2" Polyurethane on Glass-filled Nylon Swivel Caster - 1000 lb Capacity, 4 x 4-1/2 Top Plate | Choose Bearing Options Durastar

Ships in 1-3 Business Days

5" x 2" Polyurethane on Nylon Swivel Caster – 1000 lb

Part # 30-S-520-MU-03

from $46.00

Volume pricing available

NylonPlate

Load rating

1000 lbs

Size5" x 2"

Capacity1000 lbs

WheelNylon

MountPlate 4" x 4-1/2"

TypeSwivel

More Details Less Details

Width 2"

Height 6-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Temp Range -45°F to 180°F

Rig Type Swivel

Brake No Brake

Frame Zinc Plated Steel

Durastar Medium Heavy Duty 30 Series - 5" x 2" Polyurethane on Glass-filled Nylon...

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800 lbs

TieredPricing

Durastar Medium Heavy Duty 30 Series - 4" x 2" Polyurethane on Glass-filled Nylon Swivel Caster - 800 lb Capacity, 4 x 4-1/2 Top Plate | Choose Bearing Options Durastar

Ships in 1-3 Business Days

4" x 2" Polyurethane on Nylon Swivel Caster – 800 lb

Part # 30-S-420-MU-03

from $41.00

Volume pricing available

NylonPlate

Load rating

800 lbs

Size4" x 2"

Capacity800 lbs

WheelNylon

MountPlate 4" x 4-1/2"

TypeSwivel

More Details Less Details

Width 2"

Height 5-5/8"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Temp Range Up to 180°F

Rig Type Swivel

Brake No Brake

Frame Zinc Plated Steel

Durastar Medium Heavy Duty 30 Series - 4" x 2" Polyurethane on Glass-filled Nylon...

Shop Product

1250 lbs

TieredPricing

Durastar Medium Heavy Duty 30 Series - 8" x 2" Polyurethane on Glass-filled Nylon Rigid Caster - 1250 lb Capacity, 4 x 4-1/2 Top Plate | Choose Bearing Options Durastar

Ships in 1-3 Business Days

8" x 2" Polyurethane Rigid Caster – 1250 lb

Part # 30-R-820-MU-03

from $49.00

Volume pricing available

NylonPlate

Load rating

1250 lbs

Size8" x 2"

Capacity1250 lbs

WheelNylon

MountPlate 4" x 4-1/2"

TypeRigid

More Details Less Details

Width 2"

Height 9-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Temp Range Up to 180°F

Rig Type Rigid

Brake No Brake

Frame Zinc Plated Steel

Durastar Medium Heavy Duty 30 Series - 8" x 2" Polyurethane on Glass-filled Nylon...

Shop Product

1200 lbs

TieredPricing

Durastar Medium Heavy Duty 30 Series - 6" x 2" Polyurethane on Glass-filled Nylon Rigid Caster - 1200 lb Capacity, 4 x 4-1/2 Top Plate | Choose Bearing Options Durastar

Ships in 1-3 Business Days

6" x 2" Polyurethane on Nylon Rigid Caster – 1200 lb

Part # 30-R-620-MU-03

from $48.00

Volume pricing available

NylonPlate

Load rating

1200 lbs

Size6" x 2"

Capacity1200 lbs

WheelNylon

MountPlate 4" x 4-1/2"

TypeRigid

More Details Less Details

Width 2"

Height 7-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Temp Range -45°F to 180°F

Rig Type Rigid

Brake No Brake

Frame Zinc Plated Steel

Durastar Medium Heavy Duty 30 Series - 6" x 2" Polyurethane on Glass-filled Nylon...

Shop Product

1000 lbs

TieredPricing

Durastar Medium Heavy Duty 30 Series - 5" x 2" Polyurethane on Glass-filled Nylon Rigid Caster - 1000 lb Capacity, 4 x 4-1/2 Top Plate | Choose Bearing Options Durastar

Ships in 1-3 Business Days

5" x 2" Polyurethane Rigid Caster – 1000 lb

Part # 30-R-520-MU-03

from $45.00

Volume pricing available

NylonPlate

Load rating

1000 lbs

Size5" x 2"

Capacity1000 lbs

WheelNylon

MountPlate 4" x 4-1/2"

TypeRigid

More Details Less Details

Width 2"

Height 6-1/2"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Temp Range -45°F to 180°F

Rig Type Rigid

Brake No Brake

Frame Zinc Plated Steel

Durastar Medium Heavy Duty 30 Series - 5" x 2" Polyurethane on Glass-filled Nylon...

Shop Product

800 lbs

TieredPricing

Durastar Medium Heavy Duty 30 Series - 4" x 2" Polyurethane on Glass-filled Nylon Rigid Caster - 800 lb Capacity, 4 x 4-1/2 Top Plate | Choose Bearing Options Durastar

Ships in 1-3 Business Days

4" x 2" Polyurethane Glass-Filled Nylon Rigid Caster – 800 lb

Part # 30-R-420-MU-03

from $40.00

Volume pricing available

NylonPlate

Load rating

800 lbs

Size4" x 2"

Capacity800 lbs

WheelNylon

MountPlate 4" x 4-1/2"

TypeRigid

More Details Less Details

Width 2"

Height 5-5/8"

Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"

Temp Range -40°F to 180°F

Rig Type Rigid

Brake No Brake

Frame Zinc Plated Steel

Durastar Medium Heavy Duty 30 Series - 4" x 2" Polyurethane on Glass-filled Nylon...

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Durastar 30 series polyurethane casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Nylon		4, 5, 6 and 8 in	800 to 1,250 lb	-45°F to 180°F	low rolling effort on smooth floors, handles wet areas

Ratings are for single casters of durastar 30 series polyurethane casters, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
4 x 2 in	nylon	800 lb
5 x 2 in	nylon	1,000 lb
6 x 2 in	nylon	1,200 lb
8 x 2 in	nylon	1,250 lb

Choosing durastar 30 series polyurethane casters

Load: divide the loaded weight by three for a four-caster cart [S2]; at 1,250 lb each, durastar 30 series polyurethane casters suit a loaded cart of about 3,750 lb.
Mount: most durastar 30 series polyurethane casters use a 4 x 4-1/2 in top plate; check the bolt spacing on your frame against the plate size.
Floor: on durastar 30 series polyurethane casters, nylon suits smooth concrete and heavy loads, but is loud and hard on tile and wood.
Rig: swivel and rigid durastar 30 series polyurethane casters are listed.

Related to durastar 30 series polyurethane casters: 8 x 2 in polyurethane casters.

Durastar 30 series polyurethane casters questions

How much weight can durastar 30 series polyurethane casters carry?

Single durastar 30 series polyurethane casters are rated 800 to 1,250 lb; most fall between 1,000 and 1,250 lb.

What top plate do durastar 30 series polyurethane casters use?

Most durastar 30 series polyurethane casters use 4 x 4-1/2 in.

What wheel material is most common on durastar 30 series polyurethane casters?

Nylon leads on durastar 30 series polyurethane casters, rated 800 to 1,250 lb per caster.

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.

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: 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"

(3″ Wide Casters), Industry-Standard

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"

View All • 21 Plate Sizes

Plate Casters

Stem Casters

Stainless Casters

Ergonomic Casters

Leveling Casters

Durastar 30 series polyurethane casters

Shop by type

Durastar 30 series polyurethane casters by tread

Wheel sizes

Choosing durastar 30 series polyurethane casters

Durastar 30 series polyurethane casters questions

Sources