Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
View All Specialty Casters
Browse all specialty caster types
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.

Discover the power of the S-MM2-43D70 Hamilton Mini-Mite Low Profile Dual Wheel Swivel Caster. Perfectly designed for high-demand applications, this dual-wheel caster boasts 4" x 3" Polyurethane on Steel Rollers offering both durability and precision movement. The integration of (2) needle thrust bearings & (2) needle roller bearings on a 1" axle ensures maximum load-bearing capacity and smooth transitions, ideal for industrial and commercial settings.
The Hamilton Mini-Mite series redefines efficiency and sturdiness. With its low-profile design, it's not only space-saving but also remarkably efficient in weight distribution. By selecting the S-MM2-43D70, you're investing in a caster that's synonymous with reliability and state-of-the-art engineering.
Evaluating the S-MM2-43D70 for your setup? Our Hamilton Caster Experts are always on standby to provide insights and recommendations. Contact us on weekdays between 8 am - 5 pm and elevate your mobility solutions.
Order processing
In stock. Orders placed before 12pm CT (Mon–Fri) typically ship the same or next business day from our Mansfield, TX warehouse.
Shipping method
Smaller orders ship parcel (UPS/FedEx Ground). Heavy or bulk quantities consolidate to LTL freight. The method and final cost are shown before payment, so there are no post-checkout adjustments.
Payment & procurement terms
New to CasterHQ? Open an account or request terms and send your resale or tax-exemption certificate before ordering so it is applied at checkout.
Volume pricing & quotes
Quantity discounts apply automatically — no codes needed. For large, recurring, or custom requirements, request a bulk quote and our team will confirm pricing, lead time, and total landed freight upfront.
Returns & warranty
Stock items carry a 30-day return policy in unused, resalable condition. Made-to-order and custom items are non-returnable once production starts. All products carry the manufacturer's warranty against defects.
Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas and freight deliveries may take longer.
For pallet freight, scheduled releases, or blanket purchase orders, contact our team and we'll confirm total landed cost before you commit. Direct line: 844-439-4335.
One of the standout features of the Hamilton Mini-Mite is its low profile design. This ensures the caster is not just compact but offers an advantage in spaces where height clearance is a constraint. Its design facilitates smooth navigation and maneuverability, especially in tight spaces often found in industrial settings.
With its dual-wheel construction, the S-MM2-43D70 distributes weight evenly. This translates to better balance, reduced wear and tear, and a longer operational lifespan. Moreover, the use of Polyurethane on Steel Rollers ensures not just durability, but also a smoother movement on a variety of floor surfaces.
The inclusion of dual needle bearings, consisting of both thrust and roller bearings, offers an unparalleled motion fluidity. Paired with a robust 1" axle, the caster can handle significant loads while ensuring the user experiences minimal resistance during movement.
Hamilton is synonymous with top-tier engineering and manufacturing standards. The Mini-Mite series is a testament to this legacy, bringing together cutting-edge design with a focus on practical utility. Whether you're in a commercial warehouse or an industrial factory setting, the S-MM2-43D70 promises to deliver performance that exceeds expectations.
With a fine balance of form and function, the Hamilton Mini-Mite S-MM2-43D70 stands as a beacon of caster innovation. It embodies the ideals of robust construction, user-centric design, and long-term operational efficiency. Choosing Hamilton means investing in reliability and performance that stands the test of time.
This caster runs a Polyurethane wheel with a 3" tread width. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
This is a Swivel caster. Swivel casters rotate 360 degrees for full maneuverability. For most mobile equipment we recommend 2 swivel + 2 rigid, or 4 swivel with at least 2 brakes.
Rated for -20°F to 180°F. Operating outside the rated range can reduce wheel life and load capacity, so match it to your environment (wash-down, freezer, oven-adjacent, etc.).
The Polyurethane wheel performs best on smooth to semi-smooth floors including sealed concrete, tile, and epoxy. For non-marking or clean-environment needs, ask us about matching tread options.
We accept purchase orders and offer Net 30 on approved accounts, ACH, and all major cards, plus tax-exempt ordering with a resale or exemption certificate. Volume discounts apply automatically; request a bulk quote for large or recurring orders. Stock items carry a 30-day return policy in unused condition (made-to-order items are non-returnable once production starts).
$4,102.00
| Identification | |
| Brand | Hamilton |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 3" |
| Rig Type | Swivel |
| Load & Performance | |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Wheel Core Material | Steel |
| Frame Material | Zinc Plated Steel |
4" x 2" Polyurethane on Aluminum Dual Wheel Caster – 1,000 lb | CasterHQ
4" x 2" · 1000 lbs
$183
4" x 2" Polyurethane on Aluminum Rigid Dual Wheel Caster – 1,000 lb | CasterHQ
4" x 2" · 1000 lbs
$166
Hamilton 4" x 2" UltraGlide Poly Rigid Dual Wheel Caster – 1700 lb | CasterHQ
4" x 2" · 1700 lbs
$377
View all dual wheel casters →
Your selection is highlighted. Every option shares its wheel size and mount; a Direct fit tag means the same mounting plate — a drop-in replacement. Step up or down in load rating, all in-stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| — | 4" × 3"Polyurethane | Swivel | — | $4,102.00 | Viewing | |
| 1000 lbsHeavier duty | 4" × 2"Polyurethane | — | 5-5/8" | $183.00 | View → | |
| 1000 lbsHeavier duty | 4" × 2"Polyurethane | Rigid | 5-5/8" | $166.00 | View → | |
| 1700 lbsHeavier duty | 4" × 2"Polyurethane | Rigid | — | $377.00 | View → | |
| 1700 lbsHeavier duty | 4" × 2"Polyurethane | Swivel | — | $309.00 | View → |





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