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 Durastar 4" x 1-1/4" White Polyolefin Donut Wheel is engineered to deliver lasting durability and versatile performance in a wide range of environments. With its donut-style tread and 1/2" plain bore, this wheel is perfect for smooth and efficient transport, whether you're equipping a utility cart or a lightweight dolly.
Constructed from high-impact polyolefin, the wheel resists moisture, chemicals, and wear, making it an ideal choice for indoor or lightly industrial applications. Its non-marking surface ensures your floors stay clean and undamaged, while the 350-pound load capacity offers reliable support for medium-duty tasks.
Simple to install and built for resilience, this wheel is a dependable solution for businesses and DIY professionals alike. Its smooth-rolling design minimizes operator fatigue and enhances maneuverability, helping you move goods with ease and efficiency.
Choose the Durastar 4" White Polyolefin Donut Wheel for a dependable, low-maintenance solution that performs across diverse applications. Improve mobility, protect your flooring, and streamline transport today.
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.
The Durastar 4" x 1-1/4" White Polyolefin Donut Wheel is built to deliver reliable, smooth mobility for a wide range of medium-duty applications. Whether you're outfitting a cart, dolly, or general-purpose equipment, this wheel combines performance, durability, and ease of use into one cost-effective solution.
Constructed from tough white polyolefin, this wheel offers outstanding resistance to wear, chemicals, and moisture — ensuring consistent performance in demanding environments. The 1/2" plain bore design allows for easy axle installation, making it a practical and adaptable option for both industrial and residential setups.
The donut-style tread reduces surface contact, lowering rolling resistance and improving maneuverability on a variety of flooring types. This rounded profile not only enhances smooth travel but also helps reduce operator fatigue, especially in applications where frequent movement is required.
With a tread width of 1-1/4 inches and a wheel diameter of 4 inches, it’s sized for stability without compromising agility. The non-marking tread ensures your floors remain clean and damage-free — ideal for warehouses, hospitals, schools, and light manufacturing environments.
Designed to support up to 350 lbs, this wheel is suited for a wide array of uses including:
Durastar’s commitment to quality engineering is reflected in this wheel’s consistent performance, ease of installation, and minimal maintenance requirements. Whether you're replacing worn casters or building new equipment, the Durastar polyolefin wheel offers a dependable, value-driven solution.
Choose the Durastar 4" x 1-1/4" White Polyolefin Donut Wheel for smooth, floor-safe performance in a compact and resilient design. Upgrade your equipment with confidence and experience dependable results with every roll.
This 4" x 1-1/4" Polyolefin Industrial Replacement Wheel – 350 lb is rated to 350 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 Polyolefin wheel. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
4" diameter x 1-1/4" 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).
$11.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 1-1/4" |
| Load & Performance | |
| Wheel Capacity | 350 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Polyolefin |
| Frame Material | Zinc Plated Steel |
4" Solid Polyurethane Swivel Caster 3-1/8" x 4-1/8" Plate – 350 lb | CasterHQ
4" x 1-1/4" · 350 lbs
$28
4" Polyurethane Swivel Caster – 350 lb | 1/2" x 1-1/2" Threaded Stem | CasterHQ
4" x 1-1/4" · 350 lbs
$23
4" High Temp Nylon Swivel Caster – 350 lb | 1/2" x 1-1/2" Threaded Stem
4" x 1-1/4" · 350 lbs
$31
View all 4′ x 1-1/4′ 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 | |
|---|---|---|---|---|---|---|
| 325 lbsLighter duty | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $18.00 | View → | |
| 325 lbsLighter duty | 4" × 1-1/4"Polyurethane | Swivel | 6-1/4" | $29.00 | View → | |
| 350 lbs | 4" × 1-1/4"Polyolefin | — | — | $11.00 | Viewing | |
| 350 lbsSame capacity | 4" × 1-1/4"Blue Solid Polyurethane | Swivel | 5-1/8" | $28.00 | View → | |
| 350 lbsSame capacity | 4" × 1-1/4"Blue Solid Polyurethane | Swivel | 5-1/8" | $23.00 | View → |





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