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 unparalleled robustness with the Hamilton Superlast 12" Forged Steel Wheel. Featuring a high-capacity load of 7800 lbs and a 12-inch diameter, this wheel is crafted for demanding industrial use. The high-quality forged steel core is coated with durable XC Polyurethane in 70D hardness, ensuring long-lasting performance.
Product Code: W-1240-SYT70-1-1/2
Load Capacity: 7800 lbs
Wheel Diameter: 12 inches
Wheel Width: 4 inches
Hub Length: 4 1/2 inches
Bearing Type: 1-1/2 inch Precision Tapered Roller Bearing
If you have any questions, our team of specialists is available weekdays from 8 am to 5 pm to provide personalized advice and support for your industrial wheel needs.
Capable of supporting up to 7800 lbs, ideal for heavy-duty usage.
Large size for better distribution of load and stability.
Provides durability and resistance to wear and tear.
Ensures strength and longevity of the wheel.
Offers a broad base, enhancing stability and support.
Compatible with a variety of installations and machinery.
Guarantees smooth operation and reduced friction.
Suitable for industrial environments and heavy applications.
Designed for quick and hassle-free setup.
XC Polyurethane coating enhances grip and maneuverability.
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.
Discover the advanced features and specifications of the Hamilton Superlast XC 12-inch Wheel, crafted for heavy-duty applications.
The Hamilton Superlast XC 12-inch Wheel excels in industrial environments, offering unmatched reliability and performance for manufacturing, warehousing, and transportation sectors. A testament to enduring quality and engineering precision.
This Hamilton W-1240-SYT70-1-1/2 12" x 4" XC Polyurethane Wheel – 7800 lb is rated to 7800 lbs per wheel. Divide the total load across the number of wheels in your rig and keep working loads within about 75-80% of the rating for continuous use.
This is a Polyurethane wheel. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
12" diameter x 4" tread width. Verify your axle diameter and hub/bore length against your existing wheel before ordering.
Yes. Most wheels can be paired with a swivel or rigid rig to build a complete caster. Tell us your mount and load and we will spec the rig - request it on our bulk pricing page.
Rated for -20°F to 180°F. Operating outside the rated range can shorten wheel life and reduce capacity.
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).
$1,079.00
| Identification | |
| Brand | Hamilton |
| Dimensions & Mounting | |
| Wheel Diameter | 12" |
| Wheel Tread Width | 4" |
| Load & Performance | |
| Wheel Capacity | 7800 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Frame Material | Zinc Plated Steel |
Hamilton R-MD-124SYT70 12" x 4" Superlast XC Rigid Caster – 7800 lb | CasterHQ
12" x 4" · 7800 lbs
$1,307
Hamilton S-MD-124SYT70 12" x 4" Superlast XC Swivel Caster – 7800 lb | CasterHQ
12" x 4" · 7800 lbs
$1,729
Hamilton W-1240-SYT70-1-1/4 12" x 4" XC Polyurethane Wheel – 7800 lb | CasterHQ
12" x 4" · 7800 lbs
$1,079
View all 12" x 4" casters & wheels · heavy transfer carts & tow-line trailers →
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 | |
|---|---|---|---|---|---|---|
| 7200 lbsLighter duty | 12" × 4"Polyurethane | Rigid | — | $1,218.00 | View → | |
| 7200 lbsLighter duty | 12" × 4"Polyurethane | Swivel | — | $1,758.00 | View → | |
| 7800 lbs | 12" × 4"Polyurethane | — | — | $1,079.00 | Viewing | |
| 7800 lbsSame capacity | 12" × 4"Polyurethane | Rigid | — | $1,307.00 | View → | |
| 7800 lbsSame capacity | 12" × 4"Polyurethane | Swivel | — | $1,729.00 | View → |





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