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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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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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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
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Washers
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Expanding Rubber Adapter Kits
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Bumpers
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Axles & Nuts
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Spanner Bushings
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Caster Shims & Weld Plates
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Furniture Glides
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Floor Truck Locks
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Swivel Locks
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Wheel Bearings
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3-1/8" x 3" Nylon 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: 3,500 lb per casterBrand: Hamilton
The two nylon casters here come from Hamilton with 3-1/8 in wheels, rated 3,500 lb each. You can pick swivel or rigid. You will find a Hamilton R-SOMM2-313NY 3 1/8 x 3 in nylon rigid dual wheel caster rated 3,500 lb and a Hamilton S-SOMM2-313NY 3 1/8 x 3 in nylon swivel dual wheel caster rated 3,500 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.

3500 lbs
TieredPricing
Hamilton Dual Wheel Swivel Caster 3500 lbs. Load Capacity - Son of Mini-Mite Low Profile with 3 1/8" x 3" Nylon Roller, (2) Needle Thrust Bearings & (2) Needle Roller Bearings - 3/4" Axle - S-SOMM2-313NY Hamilton
Made to Order · 4-6 Wk
Hamilton S-SOMM2-313NY 3 1/8" x 3" Nylon Swivel Dual Wheel Caster – 3500 lb
Part # S-SOMM2-313NY
$1,271.00
Volume pricing available
Nylon
Load rating
3500 lbs
Size3-1/8" x 3"
Capacity3500 lbs
WheelNylon
Mount—
TypeSwivel
More Details Less Details
Width 3"
Height 4.75"
Core Nylon
Temp Range -30°F to 220°F
Rig Type Swivel
Brake No Brake
Frame Battleship Gray
Hamilton Dual Wheel Swivel Caster - Model S-SOMM2-313NY 3500 lbs Load Capacity | Son...
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3500 lbs
TieredPricing
Hamilton Dual Wheel Rigid Caster 3500 lbs. Load Capacity - Son of Mini-Mite Low Profile with 3 1/8" x 3" Nylon Roller, (2) Needle Thrust Bearings & (2) Needle Roller Bearings - 3/4" Axle - R-SOMM2-313NY Hamilton
Made to Order · 4-6 Wk
Hamilton R-SOMM2-313NY 3 1/8" x 3" Nylon Rigid Dual Wheel Caster – 3500 lb
Part # R-SOMM2-313NY
$1,276.00
Volume pricing available
Nylon
Load rating
3500 lbs
Size3-1/8" x 3"
Capacity3500 lbs
WheelNylon
Mount—
TypeRigid
More Details Less Details
Width 3"
Height 4.75"
Core Nylon
Temp Range -30°F to 220°F
Rig Type Rigid
Brake No Brake
Frame Battleship Gray
Hamilton Dual Wheel Rigid Caster - Model R-SOMM2-313NY 3500 lbs Load Capacity | Son...
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Hamilton Son of Mini-Mite Casters with Nyast Nylon Wheels

State-of-the-Art Nyast Nylon Wheel Design | Durable and Lightweight Son of Mini-Mite Framework

Premium Quality Hamilton Casters with Nyast Nylon Wheels

Presenting the Hamilton Son of Mini-Mite Casters with Nyast Nylon Wheels – an epitome of innovative design and engineering. With a revolutionary Nyast Nylon Wheel, these casters guarantee durability without compromising on weight. The robust Son of Mini-Mite framework ensures long-term use, making it an ideal choice for industry professionals seeking top-tier mobility solutions.

Experience Next-Level Mobility with Hamilton’s Nyast Nylon Wheel Casters

Embrace the best of Hamilton’s engineering with the Son of Mini-Mite series. These casters deliver unmatched mobility and performance for diverse applications. Reduce downtime and increase efficiency with Hamilton – the trusted name in industry-leading caster technology.

Questions about Hamilton Casters? Connect with Our Experts Today

Contemplating the Son of Mini-Mite Casters for your project? Our experienced Caster Specialists are on standby to assist. Contact us weekdays from 8 am - 5 pm for personalized caster recommendations tailored to your specifications.

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