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.

Introducing the Hamilton Caster Maxi-Duty Dual Wheel (MDD-84SWF70D)-a true heavyweight in the world of casters. Built to handle the most demanding industrial applications, this caster is a reliable and robust solution for moving heavy loads with ease. Designed with precision engineering and top-notch craftsmanship, the MDD-84SWF70D is a formidable companion for your heavy-duty equipment and machinery.
Featuring a dual-wheel configuration-this caster provides enhanced load distribution and stability, allowing you to maneuver even the heaviest loads effortlessly. Each wheel is meticulously crafted using high-quality materials to ensure exceptional durability and longevity, making it ideal for rugged environments and demanding work conditions.
The MDD-84SWF70D is engineered to withstand heavy loads-up to an impressive capacity of 8,700lbs making it suitable for a wide range of industrial applications. Whether you need to transport heavy machinery, large equipment, or bulky materials, this caster can handle the weight with ease.
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
Because of its size and weight, this item typically ships LTL freight on a pallet. Smaller add-on items may ship parcel. Freight cost is calculated by destination and shown before payment, or quoted for large orders.
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.
This Hamilton MDD-84SWF70D 8" x 4" UltraGlide Rigid Dual Wheel Caster – 8700 lb is rated to 8700 lbs per caster. Size a set by dividing the total load by the number of casters, and for uneven floors assume 3 of 4 casters carry the load. Keep continuous-use loads within about 75-80% of the rating.
This caster runs a Polyurethane wheel with a 4" tread width. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
This caster uses a top-plate mount. Measure your existing mounting holes before ordering; if you are replacing casters, match the bolt pattern - most standard patterns interchange across brands.
This is a Rigid caster. Rigid casters track straight for directional stability. 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).
$1,776.00
| Identification | |
| Brand | Hamilton |
| Dimensions & Mounting | |
| Wheel Diameter | 8" |
| Wheel Tread Width | 4" |
| Mount Style | Plate |
| Rig Type | Rigid |
| Load & Performance | |
| Wheel Capacity | 8700 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Wheel Core Material | Aluminum |
| Frame Material | Zinc Plated Steel |
Hamilton MDD-84SWF70D 8" x 4" UltraGlide Dual Wheel Swivel Caster – 8700 lb | CasterHQ
8" x 4" · 8700 lbs
$2,208
Hamilton S-MDD-84SWC95 8" x 4" UltraGlide Swivel Dual Wheel Caster – 8100 lb | CasterHQ
8" x 4" · 8100 lbs
$2,187
Albion 95FS08709SBBL 8" x 4" Fs Caster — 8000 lb | CasterHQ
8" x 4" · 8000 lbs
$1,312
View all 8′ x 4′ 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 | |
|---|---|---|---|---|---|---|
| 8000 lbsLighter duty | 8" × 4" | Swivel | 11" | $1,312.00 | View → | |
| 8100 lbsLighter duty | 8" × 4"Polyurethane | Swivel | — | $2,187.00 | View → | |
| 8700 lbs | 8" × 4"Polyurethane | Rigid | — | $1,776.00 | Viewing | |
| 8700 lbsSame capacity | 8" × 4"Polyurethane | Swivel | — | $2,208.00 | View → | |
| 10000 lbsHeavier duty | 8" × 4" | Swivel | 6.25" | $1,690.00 | View → |





Search
