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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
Polyolefin Wheels

Polyolefin Wheels
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High Temperature Wheels
Track Wheels (All Types)

Track Wheels (All Types)
Hand Truck Wheels

Hand Truck Wheels
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Rubber Wheels (All Types)
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Nylon Wheels
Keyed Drive Wheels

Keyed Drive Wheels
Pneumatic Wheels

Pneumatic Wheels
Atx Off-road Wheels

Atx Off-road Wheels
Poly Wheels (All Types)

Poly Wheels (All Types)
Phenolic Wheels

Phenolic Wheels
Metal Wheels (All Types)

Metal Wheels (All Types)
Flat-free (Foam-filled)

Flat-free (Foam-filled)
Wheel Replacement Parts

Wheel Replacement Parts
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Caster Plate Mounting Hardware

Caster Plate Mounting Hardware
Quick Change Caster Pads

Quick Change Caster Pads
Caster Frames - Swivel & Rigid

Caster Frames - Swivel & Rigid
Sockets & T-nuts For Casters

Sockets & T-nuts For Casters
Washers

Washers
Expanding Rubber Adapter Kits

Expanding Rubber Adapter Kits
Bumpers

Bumpers
Axles & Nuts

Axles & Nuts
Spanner Bushings

Spanner Bushings
Caster Shims & Weld Plates

Caster Shims & Weld Plates
Furniture Glides

Furniture Glides
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Floor Truck Locks
Swivel Locks

Swivel Locks
Wheel Bearings

Wheel Bearings
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Pallet Dollies
Stevens ESCORT SRT-8 steel appliance hand truck, red steel frame, black uprights, strap and footplate

Safe & Appliance Dollies
Carts & Platform Trucks

Carts & Platform Trucks
Hand Trucks & Accessories

Hand Trucks & Accessories
Ratchet Straps & Tie Downs

Ratchet Straps & Tie Downs
Three Wheel Dollies

Three Wheel Dollies
Wire Shelving

Wire Shelving
Pallet Jacks

Pallet Jacks
Stackers

Stackers
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Heavy Duty Tilt Trucks
Ball Transfers

Ball Transfers
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Moving Supplies
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AMERICAN MOVING SUPPLIES
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FAULTLESS MEDICAL CASTERS

FAULTLESS MEDICAL CASTERS

5" x 1.25" Polyurethane Casters

Custom made to order. All sales final.

Each Hamilton product is custom manufactured for your order (lead time is shown on each product page). Please confirm all specs before checkout, since made-to-order items aren't eligible for returns, exchanges or refunds. Need help? Call 844-439-4335 or email info@casterhq.com and we'll verify fit for you.

Diameter: 3-1/2 inTread: 1-1/4 inCapacity: 250 lb per casterPlate sizes: 2-1/2 x 3
The two polyolefin casters here come from Hamilton with 3-1/2 in wheels, rated 250 lb each. All mount on a 2-1/2 x 3 in plate, and you can pick swivel or rigid. You will find a Hamilton R-303-1/2-NF 3.5 x 1.25 in poly-tech rigid caster rated 250 lb and a Hamilton S-303-1/2-NF 3.5 x 1.25 in poly-tech swivel caster rated 250 lb here.

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.

250 lbs
TieredPricing
Hamilton S-303-1/2-NF Swivel Caster, 3.5-inch Poly-Tech Polyurethane Wheel, 250 lbs Load Capacity, 1/2" Non-Precision Bearings - Durable General Utility Caster Hamilton
Made to Order · 4-6 Wk
Hamilton S-303-1/2-NF 3.5" x 1.25" Poly-Tech Swivel Caster – 250 lb
Part # S-303-1-2-NF
$57.00
Volume pricing available
PolyolefinPlate
Load rating
250 lbs
Size3-1/2"
Capacity250 lbs
WheelPolyolefin
MountPlate 2-1/2" x 3"
TypeSwivel
More Details Less Details
Height 4.8125"
Rig Type Swivel
Brake No Brake
Hamilton S-303-1/2-NF Swivel Caster with Poly-Tech Polyurethane Wheel Premium Mobility Solutions | 250 lbs...
Shop Product
250 lbs
TieredPricing
Hamilton R-303-1/2-NF Rigid Caster, 3.5-inch Poly-Tech Polyurethane Wheel, 250 lbs Load Capacity, 1/2" Non-Precision Bearings - Durable General Utility Caster Hamilton
Made to Order · 4-6 Wk
Hamilton R-303-1/2-NF 3.5" x 1.25" Poly-Tech Rigid Caster – 250 lb
Part # R-303-1-2-NF
$44.00
Volume pricing available
PolyolefinPlate
Load rating
250 lbs
Size3-1/2"
Capacity250 lbs
WheelPolyolefin
MountPlate 2-1/2" x 3"
TypeRigid
More Details Less Details
Height 4.8125"
Rig Type Rigid
Brake No Brake
Hamilton R-303-1/2-NF Rigid Caster with Poly-Tech Polyurethane Wheel Premium Mobility Solutions | 250 lbs...
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Hamilton General Utility | 300 Series Casters with Poly-Tech Wheels

Durable Poly-Tech Wheels | Versatile Utility for Various Applications

Reliable and Versatile Utility Casters

Discover the efficiency of the Hamilton General Utility | 300 Series Casters, featuring high-quality Poly-Tech Wheels. Perfectly suited for a range of applications, these casters offer durability and smooth mobility, making them ideal for both industrial and commercial use.

Enhance Mobility with Hamilton's Trusted Design

The 300 Series Casters are designed for those who demand reliability and efficiency in their operations. Their robust construction and Poly-Tech wheel design ensure long-lasting performance, reducing downtime and maintenance costs. Ideal for businesses seeking practical mobility solutions.

Need Help? Our Caster Experts Are Here for You

Considering the Hamilton General Utility | 300 Series for your needs? Our team is ready to assist with expert advice and support. Contact us weekdays from 8 am - 5 pm for professional guidance on finding the best caster solutions for your business.

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