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.
Specialty Casters
Gate Casters
BBQ Pit & Smoker Casters
Keyed Drive Wheels
Drywall Cart Casters
Skid Wheels & Casters for RVs
Leveling Casters
Shopping Cart Wheels & Casters
Band Equipment Casters & Wheels
Low Profile Casters
Cart Wheels & Casters
Toolbox Caster Sets
Bakery & High Temperature Casters
Kitchen Prep Table Caster Sets
Wire Shelving Casters
Silent Glide Casters
The Durastar Medium Heavy Duty S34 Series 6" x 2" Sirius Heavy Duty Donut Polyurethane on Aluminum Swivel Caster is engineered to provide reliable mobility for demanding applications. With its 1250 lb capacity, this caster is built to handle the toughest loads while maintaining smooth, easy maneuverability. The heavy-duty donut polyurethane wheels are mounted on a durable aluminum core, providing long-lasting performance even under continuous use.
Designed with a 4" x 4-1/2" stainless top plate, this caster fits a wide range of mounting configurations, making it an excellent choice for a variety of industrial and warehouse applications. Whether you're moving heavy machinery, large equipment, or bulky items, this swivel caster is built to provide stability and reliability for all your transportation needs.
The swivel design ensures effortless turning and smooth handling, even in tight spaces, reducing the strain on workers and enhancing productivity. Choose the Durastar Medium Heavy Duty S34 Series for its superior load-bearing capacity, durability, and ergonomic design.
Choose the Durastar S34 Series caster for a durable, high-performance solution tailored to your heavy-duty needs. Shop now to elevate your mobility solutions and improve operational efficiency.
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 Medium Heavy Duty S34 Series Sirius 6" x 2" Heavy Duty Donut Polyurethane on Aluminum Swivel Caster is built for tough industrial applications requiring high durability and ease of maneuverability. With an impressive 1250 lb load capacity and superior engineering, this caster is perfect for environments like warehouses, factories, and medical facilities where reliable mobility solutions are essential. The polyurethane donut wheels, mounted on a sturdy aluminum core, offer long-lasting performance and minimal maintenance, making it an ideal choice for heavy-duty mobility tasks.
The Durastar 6" x 2" Sirius Caster is engineered for environments where performance is key. Its polyurethane wheels absorb shock, reduce vibration, and offer excellent traction, ensuring smooth operation even under heavy loads. The caster’s swivel design enhances its ability to pivot and navigate tight areas effortlessly, reducing the strain on workers and increasing operational efficiency. Furthermore, the aluminum core construction helps to maintain its structural integrity even in high-use settings, prolonging the lifespan of the caster and reducing replacement costs.
This versatile caster is ideal for use in a wide range of industries, including:
Durastar is known for its commitment to excellence, and the 6" x 2" Sirius Heavy Duty Donut Polyurethane on Aluminum Swivel Caster is a testament to this standard. Not only does it offer exceptional durability, but it is also designed with user experience in mind, ensuring that movement is smooth, easy, and safe. The caster’s shock-absorbing wheels and swivel function help reduce worker fatigue and increase overall productivity. Whether you're managing an industrial facility, a medical center, or a logistics warehouse, this caster meets the highest expectations for performance, reliability, and safety.
Invest in the Durastar 6" x 2" Sirius Heavy Duty Donut Polyurethane Swivel Caster today and experience unmatched durability and performance in your heavy-duty operations. Shop now to upgrade your mobility solutions and improve your operational efficiency.
This 6" x 2" Polyurethane Aluminum Swivel Caster – 1250 lb is rated to 1250 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 2" 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" x 4-1/2" plate and a 2-5/8" x 3-3/8" slotted to 3" x 3" 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 7-1/2". 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).
$59.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Wheel Diameter | 6" |
| Wheel Tread Width | 2" |
| Overall Height | 7-1/2" |
| Plate Size | 4" x 4-1/2" |
| Bolt Hole Pattern | 2-5/8" x 3-3/8" slotted to 3" x 3" |
| Mount Style | Plate |
| Rig Type | Swivel |
| Load & Performance | |
| Wheel Capacity | 1250 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Wheel Core Material | Aluminum |
| Frame Material | Zinc Plated Steel |
6" x 2" Polyurethane on Aluminum Swivel Caster – 1,250 lb | CasterHQ
6" x 2" · 1250 lbs
$76
6" x 2" Phenolic Rigid Caster – 1250 lb | 4" x 4-1/2" Top Plate | CasterHQ
6" x 2" · 1250 lbs · Direct fit
$23
6" x 2" Polyurethane Rigid Caster – 1250 lb | 4" x 4-1/2" Top Plate | CasterHQ
6" x 2" · 1250 lbs · Direct fit
$73
View all 6′ 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 | |
|---|---|---|---|---|---|---|
| 1200 lbsLighter duty | 6" × 2"Polyurethane | Rigid | 7-1/2" | $41.00 | View → | |
| 1200 lbsLighter duty | 6" × 2"Polyurethane | — | 7-1/2" | $76.00 | View → | |
| 1250 lbs | 6" × 2"Polyurethane | Swivel | 7-1/2" | $59.00 | Viewing | |
Direct fit6" x 2" Phenolic Rigid Caster – 1250 lb |
1250 lbsSame capacity | 6" × 2"Phenolic | Rigid | 7-1/2" | $23.00 | View → |
| 1250 lbsSame capacity | 6" × 2"Polyurethane | Rigid | 7-1/2" | $73.00 | View → |





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