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.

The W-420-131-NYUB-1/2 model exemplifies Hamilton's dedication to excellence, merging superior Nylast material for unmatched durability and a precision ball bearing for smooth operations. Designed for 1 5/16" track diameters, this U-grooved wheel ensures precision alignment and effortless maneuverability in demanding industrial environments.
Engineered for versatility, the Hamilton U-Grooved Nylast Wheel excels in various applications—from manufacturing lines to heavy-duty track systems. Its robust construction and 2 1/4" hub length make it the ideal choice for ensuring optimal performance in any setting that requires reliable, precise movement.
With a focus on innovation and quality, the W-420-131-NYUB-1/2 wheel integrates state-of-the-art engineering techniques with premium materials. The result is a wheel that not only meets but exceeds industrial standards, offering unparalleled durability and efficiency in material handling and track-based systems.
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.
Designed to meet the rigorous demands of industrial environments, the Hamilton U-Grooved Nylast Wheel features a robust 4" diameter and 2" face, combined with a 1/2" precision ball bearing. This wheel is engineered for tracks with a 1 5/16" diameter, ensuring smooth and precise movement across various applications.
Constructed from high-quality Nylast, the wheel is designed for longevity and resistance to wear and tear. The 2 1/4" hub length supports heavy-duty use, making it an ideal choice for manufacturing, warehousing, and other industrial applications.
The U-Grooved design is specifically tailored for track systems, providing a seamless fit and reducing vibrations for a smoother operation. This wheel's versatility and high load capacity make it perfect for a wide range of industrial settings, enhancing operational efficiency and mobility.
Hamilton's commitment to innovation is evident in the W-420-131-NYUB-1/2 wheel. Integrating state-of-the-art engineering techniques and premium materials, this wheel sets new standards for performance, durability, and ease of use in industrial mobility.
Embrace the future of industrial material handling with the Hamilton U-Grooved Nylast Wheel. Experience unmatched performance, durability, and precision in every move. Shop now and elevate your operational efficiency to new heights.
This is a Nylon wheel. Nylon resists chemicals and moisture and carries high loads, which suits washdown and wet environments.
4" diameter x 2" 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).
$226.00
| Identification | |
| Brand | Hamilton |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 2" |
| Load & Performance | |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Nylon |
| Frame Material | Zinc Plated Steel |
4" ATX Solid Thermo Rubber Rigid Flat Free Caster | CasterHQ
4" x 2" · 200 lbs
$39
4" Thermo Rubber Swivel All Terrain Caster – Off Road | CasterHQ
4" x 2" · 250 lbs
$40
4" x 2" Thermo Rubber Rigid Caster – 300 lb | 4" x 4-1/2" Top Plate | CasterHQ
4" x 2" · 300 lbs
$26
View all 4′ x 2′ casters & wheels →
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" × 2"Nylon | — | — | $226.00 | Viewing | |
| 200 lbsHeavier duty | 4" × 2"Gray Rubber | Rigid | 5-5/8" | $39.00 | View → | |
| 250 lbsHeavier duty | 4" × 2"Gray Rubber | Swivel | 5-5/8" | $40.00 | View → | |
| 300 lbsHeavier duty | 4" × 2"Gray Rubber | Rigid | 5-5/8" | $26.00 | View → | |
| 300 lbsHeavier duty | 4" × 2"Rubber | — | — | $20.00 | View → |





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