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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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Atx Off-road Wheels
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Poly Wheels (All Types)
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Phenolic Wheels
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Metal Wheels (All Types)
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Flat-free (Foam-filled)
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Caster Plate Mounting Hardware
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Quick Change Caster Pads
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Sockets & T-nuts For Casters
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Caster Shims & Weld Plates
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4" x 1-1/4" Casters

Diameter: 4 inTread: 1-1/4 inCapacity: up to 325 lb
This collection gathers plate-mount casters used on light institutional and furniture-grade frames. Typical builds show wheel diameters 4 in and capacities 325 lb. Replace worn corners in matched sets when possible so the cart tracks straight under load. When floors see chemicals or washdowns, prefer sealed bearings and non-absorbent wheel compounds. These light-duty options cover everyday light institutional and furniture-grade frames without jumping to extreme forged series.

Shop by type

1 type

Wheel = wheel diameter · capacity is per caster.

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.

325 lbs
TieredPricing
Hamilton S-341-UY Swivel Caster - 4 Inch Unilast Solid Polyurethane Wheel, 325 lbs Load Capacity, 5/8 Inch Straight Roller Bearing - Heavy-Duty General Utility Caster Hamilton
Made to Order · 4-6 Wk
Hamilton S-341-UY 4" x 1 1/4" Unilast Swivel Caster – 325 lb
Part # S-341-UY
from $95.00
Volume pricing available
Solid PolyurethanePlate
Load rating
325 lbs
Diameter 4"
Capacity 325 lbs
Wheel Solid Polyurethane
Mount Plate
Plate Size 2-1/2" x 3-3/4"
More Details Less Details
Width 1-1/4"
Height 5"
Bolt Pattern 1-3/4" x 2-7/8"
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Zinc Plated Steel
Hamilton S-341-UY Swivel Caster Heavy-Duty Utility Reliability in Motion | Superior Durability Versatile and...
Shop Product
325 lbs
TieredPricing
Hamilton R-341-UY Rigid Caster - 4 Inch Unilast Solid Polyurethane Wheel, 325 lbs Load Capacity, 5/8 Inch Straight Roller Bearing - Heavy-Duty General Utility Caster Hamilton
Made to Order · 4-6 Wk
Hamilton R-341-UY 4" x 1 1/4" Unilast Rigid Caster – 325 lb
Part # R-341-UY
from $66.00
Volume pricing available
Solid PolyurethanePlate
Load rating
325 lbs
Diameter 4"
Capacity 325 lbs
Wheel Solid Polyurethane
Mount Plate
Plate Size 2-3/4" x 3-3/4"
More Details Less Details
Width 1-1/4"
Height 5"
Bolt Pattern 1-3/4" x 2-7/8"
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Zinc Plated Steel
Hamilton R-341-UY Rigid Caster Heavy-Duty Utility Reliability in Motion | Superior Durability Versatile and...
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Hamilton General Utility | 300 Casters with Unilast Wheels

Durable Unilast Wheels for Heavy-Duty Use | Seamless Mobility and Longevity

Robust and Reliable General Utility Casters

Explore the unmatched quality of the Hamilton General Utility | 300 Casters with Unilast Wheels, engineered for exceptional performance in industrial environments. These casters feature highly durable Unilast wheels, designed to withstand heavy-duty usage while providing smooth and stable movement across various surfaces.

Enhance Operational Efficiency with Unilast Wheel Technology

Enhancing your equipment with the Hamilton General Utility | 300 series means benefiting from a significant boost in mobility and operational efficiency. These casters are an ideal choice for applications requiring reliable, heavy-load support without sacrificing ease of movement.

Versatile Applications in Various Industrial Settings

Whether for warehousing, manufacturing, or other industrial needs, the Hamilton General Utility | 300 Casters are versatile enough to meet a broad range of requirements, ensuring optimal performance and durability in challenging environments.

Need Assistance? Our Expert Team is Here to Help

For more information about the Hamilton General Utility | 300 Casters with Unilast Wheels, or to find the perfect caster solution for your needs, our expert team is available to assist. Reach out for personalized support and guidance.

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