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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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Polyolefin Wheels
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Wheel Replacement Parts
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Caster Plate Mounting Hardware

Caster Plate Mounting Hardware
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Quick Change Caster Pads
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Caster Frames - Swivel & Rigid
Sockets & T-nuts For Casters

Sockets & T-nuts For Casters
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FAULTLESS MEDICAL CASTERS

FAULTLESS MEDICAL CASTERS

U-Grooved Caster Wheels — Round-Rail Guided, Up to 6,500 lb

Diameter: 6, 8 inTread: 2, 3 inCapacity: up to 16,000 lb
Steel and stainless casters here serve forging carts, aerospace fixtures, and multi-ton movers. Expect wheel diameters 6, 8 in, steel and stainless treads, and industrial frames. Bring plate and stem measurements when replacing unmarked casters so the new corners sit level. For dual-wheel or wide treads, check fork clearance and swivel radius in tight aisles. These extreme-duty options cover everyday forging carts, aerospace fixtures, and multi-ton movers without jumping to extreme forged series.

Shop by wheel type

3 types

Wheel = wheel diameter · capacity is per wheel.

6500 lbs
TieredPricing
Hamilton U-Grooved Nylast Wheel 6"x2" - Precision Ball Bearing for 1 1/4" Track - Durable Industrial Wheel W-620-125-NYUB-1/2 Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-125-NYUB-1/2 6"x2" Nylast U-Grooved Wheel – 6500 lb
Part # W-620-125-NYUB-1-2
from $297.00
Volume pricing available
Nylon
Load rating
6500 lbs
Diameter 6"
Capacity 6500 lbs
Wheel Nylon
More Details Less Details
Width 2"
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Nylast Wheel 6" Diameter - W-620-125-NYUB-1/2 Precision Ball Bearing | Optimal for...
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6500 lbs
TieredPricing
Hamilton U-Grooved 1045 Steel Wheel W-620-125-FUB-1/2 - 6” Diameter, 2" Face, 2 1/2" Hub Length, 1/2" Precision Ball Bearing for 1 1/4" Track Diameter - Ideal for Industrial Applications Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-125-FUB-1/2 6" x 2" 1045 Steel Wheel – 6500 lb
Part # W-620-125-FUB-1-2
$259.00
Volume pricing available
Load rating
6500 lbs
Capacity 6500 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved 1045 Steel Wheel W-620-125-FUB-1/2 6" Diameter x 2" Face x 2 1/2"...
Shop Product
6000 lbs
TieredPricing
Hamilton U-Grooved Stainless Steel Wheel W-620-100-SSUB-1/2 - 6” Diameter Industrial Wheel for Heavy-Duty Applications Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-100-SSUB-1/2 6" x 2" Stainless Wheel – 6000 lb
Part # W-620-100-SSUB-1-2
$876.00
Volume pricing available
Load rating
6000 lbs
Capacity 6000 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Stainless Steel Wheel W-620-100-SSUB-1/2 6" Diameter x 2" Face x 2 1/2"...
Shop Product
6500 lbs
TieredPricing
Hamilton U-Grooved Nylast Wheel 6" x 2" - Precision Ball Bearing for 1" Track - High Load Industrial Wheel W-620-100-NYUB-1/2 Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-100-NYUB-1/2 6" x 2" Nylast U-Grooved Wheel – 6500 lb
Part # W-620-100-NYUB-1-2
from $297.00
Volume pricing available
Nylon
Load rating
6500 lbs
Diameter 6"
Capacity 6500 lbs
Wheel Nylon
More Details Less Details
Width 2"
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Nylast Wheel W-620-100-NYUB-1/2 High Load Capacity | Precision Ball Bearing Unmatched Durability...
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6500 lbs
TieredPricing
Hamilton U-Grooved 1045 Steel Wheel 6"x2" - Precision Ball Bearing for 1" Track - Industrial & Manufacturing Wheel Solutions Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-100-FUB-1/2 6"x2" 1045 Steel Wheel – 6500 lb
Part # W-620-100-FUB-1-2
from $259.00
Volume pricing available
Forged Steel
Load rating
6500 lbs
Diameter 6"
Capacity 6500 lbs
Wheel Forged Steel
More Details Less Details
Width 2"
Temp Range -22°F to 750°F
Frame Zinc Plated Steel
Hamilton U-Grooved Steel Wheel W-620-100-FUB-1/2 for Precision Movement 6" Diameter x 2" Face |...
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6000 lbs
TieredPricing
Hamilton U-Grooved Stainless Steel Wheel W-620-088-SSUB-1/2 - 6” Diameter Industrial Wheel for Heavy-Duty Applications Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-088-SSUB-1/2 6" x 2" Stainless Wheel – 6000 lb
Part # W-620-088-SSUB-1-2
$876.00
Volume pricing available
Load rating
6000 lbs
Capacity 6000 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Stainless Steel Wheel W-620-088-SSUB-1/2 6" Diameter x 2" Face x 2 1/2"...
Shop Product
6500 lbs
TieredPricing
Hamilton U-Grooved Nylast Wheel 6" x 2" - W-620-088-NYUB-1/2 for 7/8" Track - Precision Ball Bearing for Industrial & Aerospace Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-088-NYUB-1/2 6" x 2" Nylast U-Grooved Wheel – 6500 lb
Part # W-620-088-NYUB-1-2
from $342.00
Volume pricing available
Nylon
Load rating
6500 lbs
Diameter 6"
Capacity 6500 lbs
Wheel Nylon
More Details Less Details
Width 2"
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Nylast Wheel W-620-088-NYUB-1/2 High-Precision Movement | Durable Nylast Material Unmatched Durability &...
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6500 lbs
TieredPricing
Hamilton U-Grooved Steel Wheel 6" Diameter W-620-088-FUB-1/2 - Precision 1045 Steel for Track Systems & Industrial Applications Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-088-FUB-1/2 6" x 2" 1045 Steel U-Grooved Wheel – 6500 lb
Part # W-620-088-FUB-1-2
$298.00
Volume pricing available
Load rating
6500 lbs
Capacity 6500 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Steel Wheel W-620-088-FUB-1/2 for Precision Tracking 6" Diameter & 2" Face |...
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1600 lbs
TieredPricing
Hamilton U-Grooved Stainless Steel Wheel W-620-075-SSUB-1/2 - 6” Diameter Industrial Wheel for Heavy-Duty Applications Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-075-SSUB-1/2 6" x 2" Stainless Industrial Wheel – 1600 lb
Part # W-620-075-SSUB-1-2
$876.00
Volume pricing available
Load rating
1600 lbs
Capacity 1600 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Stainless Steel Wheel W-620-075-SSUB-1/2 6" Diameter x 2" Face x 2 1/2"...
Shop Product
1600 lbs
TieredPricing
Hamilton U-Grooved Nylast Wheel 6" Diameter - Precision Ball Bearing for Efficient Material Handling & Industrial Applications Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-075-NYUB-1/2 6" x 2" Nylast U-Grooved Wheel – 1600 lb
Part # W-620-075-NYUB-1-2
$297.00
Volume pricing available
Nylon
Load rating
1600 lbs
Capacity 1600 lbs
Wheel Nylon
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Nylast Wheel 6" Diameter Precision Ball Bearing for 3/4" Track | High-Performance...
Shop Product
6500 lbs
TieredPricing
Hamilton U-Grooved Wheel 6" Diameter 2" Face - 1045 Steel, 2 1/2" Hub, 1/2" Precision Bearing for 3/4" Track - W-620-075-FUB-1/2 Hamilton
Made to Order · 4-6 Wk
Hamilton W-620-075-FUB-1/2 6" x 2" 1045 Steel U-Grooved Wheel – 6500 lb
Part # W-620-075-FUB-1-2
$259.00
Volume pricing available
Load rating
6500 lbs
Capacity 6500 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Steel Wheel W-620-075-FUB-1/2 6" Diameter x 2" Face x 2 1/2" Hub...
Shop Product
6000 lbs
TieredPricing
Hamilton W-420-150-SSUB-1/2 U-Grooved Wheel - 4" Stainless Steel with Precision Ball Bearing for 1 1/2" Track - Durable & Corrosion-Resistant for Industrial Use Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-150-SSUB-1/2 4" x 2" Stainless Steel Wheel – 6000 lb
Part # W-420-150-SSUB-1-2
$454.00
Volume pricing available
Load rating
6000 lbs
Capacity 6000 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Stainless Steel Wheel W-420-150-SSUB-1/2 For 1 1/2" Track Diameter | High Precision...
Shop Product
6500 lbs
TieredPricing
Hamilton U-Grooved Nylast Wheel 4" x 2" - 1/2" Precision Ball Bearing for 1 1/2" Track - High Load Capacity & Durability Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-150-NYUB-1/2 4" x 2" Nylast U-Grooved Wheel – 6500 lb
Part # W-420-150-NYUB-1-2
from $213.00
Volume pricing available
Nylon
Load rating
6500 lbs
Diameter 4"
Capacity 6500 lbs
Wheel Nylon
More Details Less Details
Width 2"
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Nylast Wheel W-420-150-NYUB-1/2 High-Performance Material Handling | Precision & Durability Unmatched Quality...
Shop Product
6500 lbs
TieredPricing
Hamilton W-420-150-FUB-1/2 U-Grooved Wheel - 4" Diameter, 2" Face, 2 1/2" Hub, 1/2" Precision Ball Bearing for 1 1/2" Track - 1045 Steel Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-150-FUB-1/2 4" x 2" 1045 Steel U-Grooved Wheel – 6500 lb
Part # W-420-150-FUB-1-2
$199.00
Volume pricing available
Load rating
6500 lbs
Capacity 6500 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Wheel 4" Diameter - W-420-150-FUB-1/2 1045 Steel Construction | Precision Ball Bearing...
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6000 lbs
TieredPricing
Hamilton U-Grooved Stainless Steel Wheel W-420-131-SSUB-1/2 - 4” Diameter Industrial Wheel for Heavy-Duty Applications Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-131-SSUB-1/2 4" x 2" Stainless Industrial Wheel – 6000 lb
Part # W-420-131-SSUB-1-2
$480.00
Volume pricing available
Load rating
6000 lbs
Capacity 6000 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Stainless Steel Wheel W-420-131-SSUB-1/2 4" Diameter x 2" Face x 2 1/2"...
Shop Product
6500 lbs
TieredPricing
Hamilton U-Grooved Nylast Wheel 4"x2" - Precision Ball Bearing for 1 5/16" Track - Industrial Durability & Smooth Operation Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-131-NYUB-1/2 4" x 2" Nylast U-Grooved Wheel – 6500 lb
Part # W-420-131-NYUB-1-2
from $260.00
Volume pricing available
Nylon
Load rating
6500 lbs
Diameter 4"
Capacity 6500 lbs
Wheel Nylon
More Details Less Details
Width 2"
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Nylast Wheel W-420-131-NYUB-1/2 4" Diameter x 2" Face | Precision & Durability...
Shop Product
6500 lbs
TieredPricing
Hamilton W-420-131-FUB-1/2 U-Grooved Steel Wheel - 4" Diameter, 1045 Steel, Precision Ball Bearing for Tracks Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-131-FUB-1/2 4" x 2" 1045 Steel U-Grooved Wheel – 6500 lb
Part # W-420-131-FUB-1-2
$229.00
Volume pricing available
Load rating
6500 lbs
Capacity 6500 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Steel Wheel W-420-131-FUB-1/2 4" Diameter x 2" Face | Precision 1045 Steel...
Shop Product
1600 lbs
TieredPricing
Hamilton U-Grooved Wheel 4"x2" - Stainless Steel, 2 1/2" Hub, 1/2" Precision Bearing for 1 1/4" Track - Heavy-Duty, Corrosion-Resistant Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-125-SSUB-1/2 4"x2" Stainless Wheel – 1600 lb
Part # W-420-125-SSUB-1-2
from $417.00
Volume pricing available
Polyurethane
Load rating
1600 lbs
Diameter 4"
Capacity 1600 lbs
Wheel Polyurethane
More Details Less Details
Width 2"
Temp Range -40°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Stainless Steel Wheel W-420-125-SSUB-1/2 4" Diameter x 2" Face x 2 1/2"...
Shop Product
6500 lbs
TieredPricing
Hamilton U-Grooved Nylast Wheel 4"x2" - W-420-125-NYUB-1/2 with Precision Ball Bearing for 1 1/4" Track - Durable Industrial & Material Handling Wheel Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-125-NYUB-1/2 4"x2" Nylast U-Grooved Wheel – 6500 lb
Part # W-420-125-NYUB-1-2
from $226.00
Volume pricing available
Nylon
Load rating
6500 lbs
Diameter 4"
Capacity 6500 lbs
Wheel Nylon
More Details Less Details
Width 2"
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Nylast Wheel W-420-125-NYUB-1/2 Designed for 1 1/4" Track Diameter | High Performance...
Shop Product
7500 lbs
TieredPricing
Hamilton U-Grooved Steel Wheel 4"x2" - 1045 Steel with Precision Ball Bearing for 1 1/4" Track Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-125-FUB-1/2 4" x 2" 1045 Steel Wheel – 7500 lb
Part # W-420-125-FUB-1-2
from $199.00
Volume pricing available
Forged Steel
Load rating
7500 lbs
Diameter 4"
Capacity 7500 lbs
Wheel Forged Steel
More Details Less Details
Width 2"
Temp Range -22°F to 750°F
Frame Zinc Plated Steel
Hamilton U-Grooved 1045 Steel Wheel W-420-125-FUB-1/2 4" Diameter x 2" Face x 2 1/2"...
Shop Product
6000 lbs
TieredPricing
Hamilton W-420-100-SSUB-1/2 U-Grooved Wheel - 4" Diameter, 2" Face, 2.5" Hub Length, 1/2" Precision Ball Bearing for 1" Track - Stainless Steel Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-100-SSUB-1/2 4" x 2" Stainless Steel Wheel – 6000 lb
Part # W-420-100-SSUB-1-2
$417.00
Volume pricing available
Load rating
6000 lbs
Capacity 6000 lbs
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Wheel - Stainless Steel 4"x2" - W-420-100-SSUB-1/2 Precision Ball Bearing for 1"...
Shop Product
6500 lbs
TieredPricing
Hamilton U-Grooved Nylast Wheel 4" Dia x 2" Face - Precision Ball Bearing for 1" Track - W-420-100-NYUB-1/2: Durable Industrial & Manufacturing Mobility Solution Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-100-NYUB-1/2 4" x 2" Nylast U-Grooved Wheel – 6500 lb
Part # W-420-100-NYUB-1-2
$226.00
Volume pricing available
Nylon
Load rating
6500 lbs
Capacity 6500 lbs
Wheel Nylon
More Details Less Details
Temp Range -20°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Nylast Wheel W-420-100-NYUB-1/2 Precision Performance for Industrial Mobility | Designed for 1"...
Shop Product
6500 lbs
TieredPricing
Hamilton U-Grooved 1045 Steel Wheel 4"x2" W-420-100-FUB-1/2 - Precision Ball Bearing for 1" Track, Heavy-Duty Industrial Use Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-100-FUB-1/2 4"x2" 1045 Steel Wheel – 6500 lb
Part # W-420-100-FUB-1-2
from $199.00
Volume pricing available
Forged Steel
Load rating
6500 lbs
Diameter 4"
Capacity 6500 lbs
Wheel Forged Steel
More Details Less Details
Width 2"
Temp Range -22°F to 750°F
Frame Zinc Plated Steel
Hamilton U-Grooved 1045 Steel Wheel 4" x 2" - W-420-100-FUB-1/2 Hamilton U-Grooved 1045 Steel...
Shop Product
6000 lbs
TieredPricing
Hamilton U-Grooved Stainless Steel Wheel 4x2" - Precision Ball Bearing for 7/8" Track | Industrial & Engineering Use Hamilton
Made to Order · 4-6 Wk
Hamilton W-420-088-SSUB-1/2 4"x2" Stainless Steel Wheel – 6000 lb
Part # W-420-088-SSUB-1-2
from $447.00
Volume pricing available
Polyurethane
Load rating
6000 lbs
Diameter 4"
Capacity 6000 lbs
Wheel Polyurethane
More Details Less Details
Width 2"
Temp Range -40°F to 180°F
Frame Zinc Plated Steel
Hamilton U-Grooved Wheel - Stainless Steel, 4"x2" Precision Ball Bearing for Smooth Operation |...
Shop Product

U-Grooved Caster Wheels: buying guide

A U-grooved wheel has a rounded channel that rides on round pipe or bar stock instead of angle iron. Same fixed-path principle as V-groove, different rail — and round rail is often what's already in the building. U-grooved casters carry up to 6,500 lb per wheel.

Shop by Category

1045 steel — fub capacity up to 7,500 lbs · 54 styles · ships same day

1045 Steel
FUB Capacity up to 7,500 lbs · 54 Styles · Ships Same Day

 stainless steel — ssu capacity up to 6,000 lbs · 52 styles · ships same day

Stainless Steel
SSU Capacity up to 6,000 lbs · 52 Styles · Ships Same Day

 nylast — nyu capacity up to 6,500 lbs · 54 styles · ships same day

Nylast
NYU Capacity up to 6,500 lbs · 54 Styles · Ships Same Day

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