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 Xtreme Heavy Duty 91 Series Swivel Caster is engineered to withstand the most demanding environments. Featuring a robust 12" x 3" polyurethane on steel wheel, this caster provides exceptional durability and a smooth roll, even under heavy loads. With a 3500 lb capacity, it's designed to meet the needs of industrial, warehouse, and manufacturing settings.
Built for reliability, this caster offers superior maneuverability, thanks to its swivel design that allows easy navigation around tight corners and obstacles. The durable polyurethane wheel ensures a smooth, floor-friendly ride, making it an ideal choice for environments that require both strength and mobility.
The 4-1/2" x 6-1/4" top plate is compatible with a variety of applications, offering easy integration with most equipment. Whether you're using it for heavy machinery, carts, or racks, the Durastar Xtreme Heavy Duty Caster ensures your operations run smoothly and efficiently. Trust in its high-performance design to provide long-lasting value in your toughest tasks.
Upgrade your mobility solutions with the Durastar Xtreme Heavy Duty 91 Series Swivel Caster. Designed for maximum performance and durability, it's the perfect choice for your most demanding projects.
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.
The Durastar Xtreme Heavy Duty 91 Series swivel caster is engineered to provide robust mobility solutions for heavy-duty applications. Its 3500 lb capacity and durable construction make it ideal for use in industrial, warehouse, and heavy machinery settings, where reliability and performance are paramount. This caster is perfect for ensuring smooth and efficient movement in environments where performance is key.
Durable Construction: Crafted from polyurethane on steel, the Durastar Xtreme caster combines the best of both materials for exceptional durability and superior floor protection. The polyurethane wheels are known for their ability to withstand heavy loads while maintaining smooth, floor-friendly operation. This combination ensures that the caster will perform reliably under extreme conditions, providing long-lasting service without sacrificing maneuverability.
Designed for Superior Maneuverability: The swivel design of the caster allows it to pivot 360 degrees, making it easier to navigate tight corners, narrow aisles, and around obstacles. This flexibility ensures that you can maintain efficient workflows in high-traffic areas without compromising on safety or performance. The 12" x 3" wheel size is also optimized for stability and strength, allowing you to handle a variety of heavy-duty tasks with ease.
Floor Protection and Smooth Operation: The high-quality polyurethane material ensures smooth, quiet rolling even under heavy loads. This makes the caster a great choice for environments where noise and floor damage need to be minimized, such as hospitals, warehouses, or retail spaces. The durable wheels help protect floors from scuffs, scratches, and wear, making them an ideal choice for both indoor and outdoor environments.
Versatile Applications: The Durastar Xtreme Heavy Duty 91 Series swivel caster is designed to be versatile enough for a wide range of applications. Whether you're working with carts, machinery, racks, or industrial equipment, this caster provides the strength and maneuverability needed to keep your operations moving smoothly. With a top plate size of 4-1/2" x 6-1/4", it is compatible with a wide variety of equipment, offering excellent adaptability in various industrial settings.
Minimal Maintenance and Long-Term Durability: The robust design of the Durastar Xtreme caster means minimal maintenance requirements. Built for long-term durability, this caster will continue to provide reliable performance over time, reducing downtime and maintenance costs. With its solid construction and efficient design, the Durastar Xtreme caster ensures that your operations remain efficient and cost-effective, even under challenging conditions.
Reliable Brand and Trusted Performance: As a product from Durastar, a well-known name in the caster and wheel industry, the Xtreme Heavy Duty 91 Series caster stands out for its exceptional performance and dependability. Durastar has built a reputation for providing high-quality products designed to meet the needs of tough environments, ensuring that each caster is crafted with precision and care.
Ideal For:
Upgrade your mobility solutions with the Durastar Xtreme Heavy Duty 91 Series swivel caster. With its superior construction, 3500 lb load capacity, and unparalleled performance, it’s the ideal solution for your toughest tasks. Trust Durastar for long-lasting durability and efficiency.
This 12" x 3" Polyurethane on Steel Swivel Caster – 3500 lb is rated to 3500 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 3" tread width. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
This caster uses a top-plate mount with a 4-1/2" x 6-1/4" plate and a 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4" bolt pattern. 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 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.
The overall height (floor to top of plate or stem) is 13-1/2". Account for it when checking equipment clearance, dock height, and ergonomic working height.
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).
$390.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Wheel Diameter | 12" |
| Wheel Tread Width | 3" |
| Overall Height | 13-1/2" |
| Plate Size | 4-1/2" x 6-1/4" |
| Bolt Hole Pattern | 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4" |
| Mount Style | Plate |
| Rig Type | Swivel |
| Load & Performance | |
| Wheel Capacity | 3500 lbs |
| 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 |
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View all 12" x 3" casters & wheels · mold-on rubber, polyurethane, pneumatic →
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 | |
|---|---|---|---|---|---|---|
| 2500 lbsLighter duty | 12" × 3"Polyurethane | Swivel | 13-1/2" | $111.00 | View → | |
| 2500 lbsLighter duty | 12" × 3"Polyurethane | Swivel | 13-1/2" | $180.00 | View → | |
| 3500 lbs | 12" × 3"Polyurethane | Swivel | 13-1/2" | $390.00 | Viewing | |
| 3500 lbsSame capacity | 12" × 3"Phenolic | Rigid | 13-1/2" | $158.00 | View → | |
| 6000 lbsHeavier duty | 12" × 3"Polyurethane | Rigid | 15-1/2" | $599.00 | View → |





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