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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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8" x 2" Polyurethane Casters

Plate sizes: 4 x 5Diameter: 4, 6, 8 inTread: 2 inCapacity: up to 1,450 lb
Match a 4 x 5 top plate when bolting casters under warehouse carts on epoxy and smooth concrete. Catalog chips cover wheel diameters 4, 6, 8 in, polyurethane treads, and capacities 620 to 1,450 lb. Use kingpinless or heavy plate series when shock loads keep shearing kingpin races. Confirm stem length and thread pitch on stem mounts so the shoulder seats flush in the boss.

Shop by type

3 types

Wheel = wheel diameter · capacity is per caster.

1450 lbs
TieredPricing
Hamilton 1450 lbs Load Capacity Swivel Caster - 8x2" UltraGlide Ergo Polyurethane Wheel - Spring Loaded, Sealed Precision Bearings - S-SPWH-8SWC85-2 Hamilton
Made to Order · 4-6 Wk
Hamilton S-SPWH-8SWC85-2 8"x2" Polyurethane Swivel Spring Loaded Caster – 1450 lb
Part # S-SPWH-8SWC85-2
from $719.00
Volume pricing available
Polyurethane
Load rating
1450 lbs
Diameter 8"
Capacity 1450 lbs
Wheel Polyurethane
More Details Less Details
Width 2"
Height 10-3/16"
Core Iron
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton Spring Loaded Workhorse Swivel Caster - S-SPWH-8SWC85-2 Optimal Performance & Durability | 1450...
Shop Product
620 lbs
TieredPricing
Hamilton 8x2 Spring Loaded Workhorse Swivel Caster, 620 lbs. Load Capacity, UltraGlide Ergo Polyurethane 85A on Cast Iron Wheel with Sealed Precision Bearings - S-SPWH-8SWC85-1 Hamilton
Made to Order · 4-6 Wk
Hamilton S-SPWH-8SWC85-1 8" x 2" Polyurethane Swivel Spring Loaded Caster – 620 lb
Part # S-SPWH-8SWC85-1
from $705.00
Volume pricing available
Cast Iron
Load rating
620 lbs
Diameter 8"
Capacity 620 lbs
Wheel Cast Iron
More Details Less Details
Width 2"
Height 10-3/16"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton 8x2 Spring Loaded Workhorse Swivel Caster S-SPWH-8SWC85-1 620 lbs Load Capacity | UltraGlide...
Shop Product
1450 lbs
TieredPricing
Hamilton 6" Swivel Caster - 1450 lbs Load Capacity - Spring Loaded Workhorse with UltraGlide Ergo Polyurethane Wheel, Sealed Precision Bearings - Industrial & Warehouse Hamilton
Made to Order · 4-6 Wk
Hamilton 6" x 2" UltraGlide Ergo Poly Swivel Spring Loaded Caster – 1450 lb
Part # S-SPWH-6SWC85-2
from $586.00
Volume pricing available
Cast Iron
Load rating
1450 lbs
Diameter 6"
Capacity 1450 lbs
Wheel Cast Iron
More Details Less Details
Width 2"
Height 8.1875"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton 6" Spring Loaded Workhorse Swivel Caster 1450 lbs Load Capacity | Industrial &...
Shop Product
620 lbs
TieredPricing
Hamilton 620 lbs Load Capacity Swivel Caster - 6x2 inch UltraGlide Ergo Polyurethane Wheel, Spring Loaded, Sealed Precision Ball Bearings - Heavy Duty Workhorse for Industrial & Commercial Use Hamilton
Made to Order · 4-6 Wk
Hamilton S-SPWH-6SWC85-1 6"x2" Polyurethane Swivel Spring Loaded Caster – 620 lb
Part # S-SPWH-6SWC85-1
from $586.00
Volume pricing available
Cast Iron
Load rating
620 lbs
Diameter 6"
Capacity 620 lbs
Wheel Cast Iron
More Details Less Details
Width 2"
Height 8-3/16"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton Spring Loaded Workhorse Swivel Caster - Max Load 620 lbs Enhanced Mobility &...
Shop Product
720 lbs
TieredPricing
Hamilton 720 lbs Load Capacity Spring Loaded Workhorse Swivel Caster - 4"x2" UltraGlide Ergo Polyurethane Wheel, 85A Cast Iron, 1/2" Sealed Precision Ball Bearings - Heavy Duty Mobility Solution Hamilton
Made to Order · 4-6 Wk
Hamilton 4"x2" UltraGlide Poly Swivel Spring Loaded Caster – 720 lb
Part # S-SPWH-4SWC85-2
from $528.00
Volume pricing available
Cast Iron
Load rating
720 lbs
Diameter 4"
Capacity 720 lbs
Wheel Cast Iron
More Details Less Details
Width 2"
Height 6.6875"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton Spring Loaded Workhorse 720 lbs Capacity Swivel Caster Enhanced Mobility | Industrial Strength...
Shop Product
620 lbs
TieredPricing
Hamilton 4x2" Spring-Loaded Workhorse Swivel Caster - 620 lbs Capacity with UltraGlide Ergo Polyurethane (85A) & Sealed Precision Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton 4" x 2" UltraGlide Ergo Swivel Spring Loaded Caster – 620 lb
Part # S-SPWH-4SWC85-1
from $514.00
Volume pricing available
Cast IronPlate
Load rating
620 lbs
Diameter 4"
Capacity 620 lbs
Wheel Cast Iron
Mount Plate
Plate Size 4" x 5"
More Details Less Details
Width 2"
Height 6.6875"
Bolt Pattern 2-5/8" x 3-5/8" and 3" x 3"
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton Spring Loaded Workhorse Swivel Caster Engineered for unmatched mobility, the Hamilton Workhorse Swivel...
Shop Product
1450 lbs
TieredPricing
Hamilton 1450 lbs Load Capacity Rigid Caster - 8x2" UltraGlide Ergo Polyurethane Wheel - Spring Loaded, Sealed Precision Bearings - R-SPWH-8SWC85-2 Hamilton
Made to Order · 4-6 Wk
Hamilton R-SPWH-8SWC85-2 8"x2" Polyurethane Rigid Spring Loaded Caster – 1450 lb
Part # R-SPWH-8SWC85-2
from $676.00
Volume pricing available
Polyurethane
Load rating
1450 lbs
Diameter 8"
Capacity 1450 lbs
Wheel Polyurethane
More Details Less Details
Width 2"
Height 10-3/16"
Core Iron
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton Spring Loaded Workhorse Rigid Caster - R-SPWH-8SWC85-2 Optimal Performance & Durability | 1450...
Shop Product
620 lbs
TieredPricing
Hamilton 8x2 Spring Loaded Workhorse Rigid Caster, 620 lbs. Load Capacity, UltraGlide Ergo Polyurethane 85A on Cast Iron Wheel with Sealed Precision Bearings - R-SPWH-8SWC85-1 Hamilton
Made to Order · 4-6 Wk
Hamilton R-SPWH-8SWC85-1 8" x 2" Polyurethane Rigid Spring Loaded Caster – 620 lb
Part # R-SPWH-8SWC85-1
from $682.00
Volume pricing available
Cast Iron
Load rating
620 lbs
Diameter 8"
Capacity 620 lbs
Wheel Cast Iron
More Details Less Details
Width 2"
Height 10-3/16"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton 8x2 Spring Loaded Workhorse Rigid Caster R-SPWH-8SWC85-1 620 lbs Load Capacity | UltraGlide...
Shop Product
1450 lbs
TieredPricing
Hamilton 6" Rigid Caster - 1450 lbs Load Capacity - Spring Loaded Workhorse with UltraGlide Ergo Polyurethane Wheel, Sealed Precision Bearings - Industrial & Warehouse Hamilton
Made to Order · 4-6 Wk
Hamilton 6" x 2" Polyurethane Rigid Spring Loaded Caster – 1450 lb
Part # R-SPWH-6SWC85-2
$625.00
Volume pricing available
Cast Iron
Load rating
1450 lbs
Diameter 6"
Capacity 1450 lbs
Wheel Cast Iron
More Details Less Details
Width 2"
Height 8.1875"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton 6" Spring Loaded Workhorse Rigid Caster 1450 lbs Load Capacity | Industrial &...
Shop Product
620 lbs
TieredPricing
Hamilton 620 lbs Load Capacity Rigid Caster - 6x2 inch UltraGlide Ergo Polyurethane Wheel, Spring Loaded, Sealed Precision Ball Bearings - Heavy Duty Workhorse for Industrial & Commercial Use Hamilton
Made to Order · 4-6 Wk
Hamilton R-SPWH-6SWC85-1 6"x2" UltraGlide Poly Rigid Spring Loaded Caster – 620 lb
Part # R-SPWH-6SWC85-1
from $617.00
Volume pricing available
Cast Iron
Load rating
620 lbs
Diameter 6"
Capacity 620 lbs
Wheel Cast Iron
More Details Less Details
Width 2"
Height 8-3/16"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton Spring Loaded Workhorse Rigid Caster - Max Load 620 lbs Enhanced Mobility &...
Shop Product
720 lbs
TieredPricing
Hamilton 720 lbs Load Capacity Spring Loaded Workhorse Rigid Caster - 4"x2" UltraGlide Ergo Polyurethane Wheel, 85A Cast Iron, 1/2" Sealed Precision Ball Bearings - Heavy Duty Mobility Solution Hamilton
Made to Order · 4-6 Wk
Hamilton 4"x2" UltraGlide Poly Rigid Spring Loaded Caster – 720 lb
Part # R-SPWH-4SWC85-2
from $496.00
Volume pricing available
Cast Iron
Load rating
720 lbs
Diameter 4"
Capacity 720 lbs
Wheel Cast Iron
More Details Less Details
Width 2"
Height 6.6875"
Core Aluminum
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton Spring Loaded Workhorse 720 lbs Capacity Rigid Caster Enhanced Mobility | Industrial Strength...
Shop Product
620 lbs
TieredPricing
Hamilton 4x2" Spring-Loaded Workhorse Rigid Caster - 620 lbs Capacity with UltraGlide Ergo Polyurethane (85A) & Sealed Precision Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton 4"x2" UltraGlide Ergo Rigid Spring Loaded Caster – 720 lb
Part # R-SPWH-4SWC85-1
from $484.00
Volume pricing available
Cast IronPlate
Load rating
620 lbs
Diameter 4"
Capacity 620 lbs
Wheel Cast Iron
Mount Plate
Plate Size 4" x 5"
More Details Less Details
Width 2"
Height 6.6875"
Bolt Pattern 2-5/8" x 3-5/8" and 3" x 3"
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton Spring Loaded Workhorse Rigid Caster Engineered for unmatched mobility, the Hamilton Workhorse Rigid...
Shop Product

Hamilton Spring Loaded | SPWH Casters with UltraGlide Ergo Wheels

Revolutionary UltraGlide Ergo Wheels Technology | Optimized Spring Loaded Mechanism

Premium Hamilton Casters - Efficiency Meets Durability

Dive into the next-generation Hamilton Spring Loaded | SPWH Casters. Designed for professionals seeking top-of-the-line mobility solutions, these casters are equipped with cutting-edge UltraGlide Ergo Wheels. Experience smoother transitions, reduced floor damage, and effortless maneuverability. The integrated spring-loaded mechanism further enhances load protection and ensures consistent performance across varied terrains.

Maximize Productivity with Hamilton's SPWH Series

Invest in Hamilton's legacy of precision and innovation. The SPWH series, featuring our patented UltraGlide Ergo Wheels, guarantees reduced downtime, extended lifespan, and unbeatable user comfort. Elevate your workspace efficiency with Hamilton's industry-leading casters.

Unsure Which Caster Fits Your Needs? Hamilton's Expertise Awaits

With Hamilton's dedicated support team, find the perfect caster solution tailored for your unique requirements. Available weekdays from 8 am - 5 pm, we're here to provide unmatched guidance and expertise.

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