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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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Sockets & T-nuts For Casters
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3-1/8" x 3" 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: 3-1/8 inTread: 3 inCapacity: 2,500 lb per casterBrand: Hamilton
The two polyurethane casters here come from Hamilton with 3-1/8 in wheels, rated 2,500 lb each. You can pick swivel or rigid. You will find a Hamilton R-SOMM2-313D70 3 1/8 x 3 in poly rigid dual wheel caster rated 2,500 lb and a Hamilton S-SOMM2-313D70 3 1/8 x 3 in poly dual wheel swivel caster rated 2,500 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.

2500 lbs
TieredPricing
Hamilton Low Profile 2500 lbs. Load Capacity Swivel Caster - Dual Wheel 3 1/8" x 3" Poly on Steel Roller - With Needle Thrust & Roller Bearings on 3/4" Axle - Son of Mini-Mite S-SOMM2-313D70 Hamilton
Made to Order · 4-6 Wk
Hamilton S-SOMM2-313D70 3 1/8" x 3" Poly Dual Wheel Swivel Caster – 2500 lb
Part # S-SOMM2-313D70
$1,520.00
Volume pricing available
Polyurethane
Load rating
2500 lbs
Size3-1/8" x 3"
Capacity2500 lbs
WheelPolyurethane
Mount—
TypeSwivel
More Details Less Details
Width 3"
Height 4.75"
Core Steel
Temp Range -50°F to 200°F
Rig Type Swivel
Brake No Brake
Frame Battleship Gray
Hamilton Low Profile Dual Wheel Swivel Caster - S-SOMM2-313D70 Engineered for Optimal Performance |...
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2500 lbs
TieredPricing
Hamilton Low Profile 2500 lbs. Load Capacity Rigid Caster - Dual Wheel 3 1/8" x 3" Poly on Steel Roller - With Needle Thrust & Roller Bearings on 3/4" Axle - Son of Mini-Mite R-SOMM2-313D70 Hamilton
Made to Order · 4-6 Wk
Hamilton R-SOMM2-313D70 3 1/8" x 3" Poly Rigid Dual Wheel Caster – 2500 lb
Part # R-SOMM2-313D70
$1,078.00
Volume pricing available
Polyurethane
Load rating
2500 lbs
Size3-1/8" x 3"
Capacity2500 lbs
WheelPolyurethane
Mount—
TypeRigid
More Details Less Details
Width 3"
Height 4.75"
Core Steel
Temp Range -50°F to 200°F
Rig Type Rigid
Brake No Brake
Frame Battleship Gray
Hamilton Low Profile Dual Wheel Rigid Caster - R-SOMM2-313D70 Engineered for Optimal Performance |...
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Hamilton Son of Mini-Mite Casters with Superlast XC Wheels

High-Performance Superlast XC Wheels | Durable & Long-Lasting Casters

Introducing Hamilton's Premium Mini-Mite Casters

Discover the latest innovation in caster technology with the Hamilton Son of Mini-Mite Casters equipped with Superlast XC Wheels. These are precision-engineered for both durability and performance. Ideal for industrial and commercial usage, the Superlast XC Wheels guarantee smooth transitions and reduced wear-and-tear.

Leading the Way in Caster Durability and Performance

Join the professionals who trust Hamilton's expertise. The Son of Mini-Mite series redefines mobility, ensuring efficient and reliable operations. The integration of Superlast XC Wheels assures users of longevity and unmatched caster performance, all with the Hamilton quality seal.

Unsure Which Caster Fits Your Need? Hamilton's Experts Can Help

If the Hamilton Son of Mini-Mite Casters with Superlast XC Wheels has caught your attention, let our team assist further. Get expert advice on caster selection tailored to your specific requirements, available weekdays from 8 am - 5 pm.

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