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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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6" x 3" Rubber Casters · 750 lb · 4-1/2" x 6-1/4" Plate

Diameter: 6 inTread: 3 inCapacity: 750 lb per casterPlate sizes: 4-1/2 x 6-1/4
The two rubber casters here come from Durastar with 6 in wheels, rated 750 lb each. All mount on a 4-1/2 x 6-1/4 in plate, and you can pick swivel or rigid. You will find a 6 x 3 in rubber on steel rigid caster rated 750 lb and a 6 x 3 in rubber on steel swivel caster rated 750 lb here.

2 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.

750 lbs
TieredPricing
Durastar Heavy Duty 60 Series - 6" x 3" Rubber on Steel Swivel Caster - 750 lb Capacity, 4-1/2" x 6-1/4" Top Plate | Choose Bearing Option Durastar
Ships in 1-3 Business Days
6" x 3" Rubber on Steel Swivel Caster – 750 lb
Part # 60-S-630-RS-04
from $95.00
Volume pricing available
RubberPlate
Load rating
750 lbs
Size6" x 3"
Capacity750 lbs
WheelRubber
MountPlate 4-1/2" x 6-1/4"
TypeSwivel
More Details Less Details
Width 3"
Height 7-1/2"
Bolt Pattern 2-7/16" x 4-15/16"
Temp Range -20°F to 160°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Durastar Heavy Duty 60 Series - 6" x 3" Rubber on Steel Swivel Caster...
Shop Product
750 lbs
TieredPricing
Durastar Heavy Duty 60 Series - 6" x 3" Rubber on Steel Rigid Caster - 750 lb Capacity, 4-1/2" x 6-1/4" Top Plate | Choose Bearing Option Durastar
Ships in 1-3 Business Days
6" x 3" Rubber on Steel Rigid Caster – 750 lb
Part # 60-R-630-RS-04
from $95.00
Volume pricing available
RubberPlate
Load rating
750 lbs
Size6" x 3"
Capacity750 lbs
WheelRubber
MountPlate 4-1/2" x 6-1/4"
TypeRigid
More Details Less Details
Width 3"
Height 7-1/2"
Bolt Pattern 2-7/16" x 4-15/16"
Temp Range -20°F to 160°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Durastar Heavy Duty 60 Series - 6" x 3" Rubber on Steel Rigid Caster...
Shop Product

6-Inch Rubber on Steel Casters

6-inch rubber on steel wheel casters. True rubber tread permanently bonded to a steel core for maximum strength and durability. Rated up to 500 lb per caster. Designed for heavy industrial equipment, manufacturing floor transport, and dock operations.

Wheel: 6″ | Tread: Rubber | Core: Steel | Load: Up to 500 lb | Bearing: Roller | Swivel & rigid

Frequently Asked Questions

What is rubber on steel? ›
Rubber on steel features a thick rubber tread bonded to a solid steel core. The steel core handles extreme loads while the rubber provides floor protection and vibration dampening.
How does rubber on steel compare to mold-on rubber? ›
Both offer high load capacity, but rubber on steel uses a steel core (vs cast iron) for lighter weight at similar strength. The rubber compound may differ in hardness.
Are these suitable for dock work? ›
Yes. 6-inch rubber on steel casters handle dock plates, expansion joints, and rough concrete surfaces with ease.

Related Collections

All Rubber on Steel Rubber Caster Hub 8-Inch Rubber/Steel 10-Inch Rubber/Steel 12-Inch Rubber/Steel

CasterHQ — nationwide industrial caster and wheel supply. ISO-certified, ANSI-tested. Same-day dispatch on in-stock orders. Call 844-439-4335 or contact us for expert sizing help.

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