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 12" x 3" Phenolic Swivel Caster is engineered for the toughest environments, providing reliable mobility solutions for heavy-duty applications. With a robust 3500 lb capacity, this caster is built to handle demanding loads, making it perfect for industries that require robust transport solutions, such as manufacturing, warehousing, and logistics.
Designed with a 4-1/2" x 6-1/4" top plate for added stability, the caster is built to support large equipment while ensuring smooth and efficient movement. The phenolic wheel provides excellent wear resistance, making it an ideal choice for environments with high impact or abrasion, such as factories or warehouses.
Whether you need to move heavy machinery or large equipment, the Durastar Xtreme Heavy Duty 91 Series ensures effortless maneuverability, even in harsh working conditions. Its swivel design allows for precision navigation, enhancing operational efficiency. Choose Durastar for durability, strength, and long-lasting performance in every application.
Optimize your industrial operations with the Durastar Xtreme Heavy Duty 91 Series caster. Built to withstand extreme loads and rough conditions, it provides unmatched strength and mobility for your heavy-duty transport needs.
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 12" x 3" Phenolic Swivel Caster is engineered to provide superior performance in the most demanding industrial environments. With a robust 3500 lb load capacity, this caster is designed to move heavy machinery, equipment, and tools effortlessly while ensuring long-term durability and reliability.
Whether you are transporting large, heavy items across a warehouse floor, maneuvering equipment in a factory, or using it in other high-capacity logistics environments, this caster offers the strength and reliability needed for all types of industrial settings. Its 12" x 3" phenolic wheel provides smooth operation over rough surfaces, ensuring that even under heavy loads, the caster continues to function smoothly and efficiently.
With its durable 4-1/2" x 6-1/4" top plate and swivel design, this caster allows for optimal stability and maneuverability. The swivel feature ensures that your equipment moves easily around corners and obstacles, while the top plate enhances the overall stability of your load, making it ideal for environments with frequent movement and tight spaces.
Constructed from high-quality phenolic material, this caster is built to withstand wear and tear in industrial environments. It can endure high-impact conditions and resist abrasion, ensuring a long lifespan even in the harshest settings. The shock-mitigating design further enhances its ability to absorb vibrations, protecting sensitive equipment from damage while in transit.
Designed with ergonomics in mind, this caster reduces the strain on operators. Its smooth-rolling wheels make it easier to transport heavy equipment with minimal effort, improving the overall productivity and safety of your operations. Whether you're moving tools, machinery, or equipment, you can rely on this caster to make your job easier and more efficient.
From warehouses to factories, the Durastar Xtreme Heavy Duty 91 Series caster is suitable for a wide range of industrial applications. It’s ideal for use in manufacturing, logistics, construction, and other settings that require heavy-duty mobility. Its versatile design ensures it can handle any challenge your operations face.
When it comes to heavy-duty casters, Durastar is a name you can trust. This brand is known for its commitment to providing high-quality, durable, and reliable products that meet the demands of industrial environments. By choosing the Durastar Xtreme Heavy Duty 91 Series, you are ensuring that your operations run smoothly, safely, and efficiently.
Upgrade your equipment transport with the Durastar Xtreme Heavy Duty 91 Series. With unmatched durability, strength, and maneuverability, this caster is the ideal solution for heavy-duty applications. Invest in your operations' efficiency and safety with this high-performance caster today.
This 12" x 3" Phenolic 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 Phenolic wheel with a 3" tread width. Phenolic carries high loads on smooth, hard floors and tolerates heat, but transmits more shock than an elastomer tread.
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 Up to 250°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 Phenolic wheel performs best on smooth, hard industrial floors. 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 | Up to 250°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Phenolic |
| Frame Material | Zinc Plated Steel |
12" x 3" Phenolic Rigid Kingpinless Caster – 3,500 lb | CasterHQ
12" x 3" · 3500 lbs · Direct fit
$158
12" x 3" Green Polyurethane Rigid Caster – 2,500 lb | CasterHQ
12" x 3" · 2500 lbs · Direct fit
$196
12" x 3" Red Ductile Steel Rigid Caster – 2,500 lb | CasterHQ
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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"Phenolic | 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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