Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
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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.
Experience the power of Durastar Pneumatic / Flat Free Specialty Casters 100 Series. Designed to meet the demands of both indoor and outdoor environments, these 10" x 3-1/2" flat-free swivel casters provide an unmatched blend of performance and durability. With a 300 lb capacity, they are engineered for heavy-duty use, ensuring reliable mobility for your industrial equipment and carts.
Equipped with flat free technology, these casters eliminate the hassle of maintaining air pressure, providing a smooth ride even on rough or uneven surfaces. This makes them an excellent choice for environments where traditional pneumatic tires would fail, offering consistent performance without the risk of flats.
With their 4" x 4-1/2" top plate, these casters are designed for easy installation on a wide range of equipment. Their robust design and high-quality materials make them the ideal solution for applications in manufacturing, warehouses, hospitals, and more. Whether you're transporting heavy loads or need a caster that can withstand tough conditions, Durastar Pneumatic / Flat Free Specialty Casters are built to perform.
Trust in Durastar's commitment to excellence. Our casters are designed with a focus on user comfort, safety, and long-term value. Enhance your equipment's functionality and mobility with our reliable, flat-free casters today.
Optimize your workflow with Durastar Pneumatic / Flat Free Specialty Casters 100 Series. Offering superior durability and performance, these casters are the perfect choice for those demanding more from their equipment. Invest in quality that lasts.
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.
Introducing the Durastar Pneumatic / Flat Free Specialty Casters 100 Series, designed to meet the demands of both rugged indoor and outdoor environments. These 10" x 3-1/2" flat-free swivel casters feature a 300 lb load capacity, making them an ideal solution for heavy-duty equipment such as industrial carts, medical devices, and outdoor machinery.
Engineered with flat-free technology, these casters offer reliable, maintenance-free performance, ensuring smooth, hassle-free movement across even the most uneven surfaces. Say goodbye to air pressure maintenance and enjoy enhanced mobility for all your equipment.
When it comes to durability and performance, Durastar Pneumatic / Flat Free Specialty Casters stand out as a top choice for businesses and industries that rely on mobility solutions. With their robust construction and flat-free technology, they eliminate common maintenance issues associated with pneumatic tires, making them the preferred option for businesses that need uninterrupted operation.
These casters are designed for those who demand reliable performance. Whether you're managing a busy warehouse, setting up medical equipment, or working in outdoor environments, Durastar casters ensure a smooth ride and superior maneuverability, minimizing downtime and improving overall productivity.
By investing in Durastar Pneumatic / Flat Free Specialty Casters, you’re choosing a high-quality solution that prioritizes user safety, convenience, and efficiency. Their practical design reduces strain on employees, offering long-term value and making them a smart investment for businesses seeking to improve mobility and operational effectiveness.
Enhance the efficiency and safety of your operations with the Durastar Pneumatic / Flat Free Specialty Casters 100 Series. Designed for long-lasting use, these casters provide smooth, reliable movement while reducing maintenance costs and downtime. Invest in Durastar today and experience the difference in mobility solutions.
This 10" x 3-1/2" Flat Free Swivel Pneumatic Caster – 300 lb is rated to 300 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 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 overall height (floor to top of plate or stem) is 13". 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).
$116.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Wheel Diameter | 10" |
| Wheel Tread Width | 3-1/2" |
| Overall Height | 13" |
| 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 | 300 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Frame Material | Zinc Plated Steel |
10" Pneumatic Rigid Caster – 350 lb | CasterHQ
10" x 3-1/2" · 350 lbs · Direct fit
$77
10" 4 Ply Air Filled Swivel Pneumatic Caster – 350 lb | CasterHQ
10" x 3-1/2" · 350 lbs · Direct fit
$79
10" Pneumatic Swivel Caster with Brake – 350 lb | CasterHQ
10" x 3-1/2" · 350 lbs · Direct fit
$102
View all pneumatic casters: air-filled & flat-free for rough terrain →
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 | |
|---|---|---|---|---|---|---|
| 300 lbs | 10" × 3-1/2" | Swivel | 13" | $116.00 | Viewing | |
Direct fit10" Pneumatic Rigid Caster – 350 lb |
350 lbsHeavier duty | 10" × 3-1/2"Rubber | Rigid | 12-1/4" | $77.00 | View → |
| 350 lbsHeavier duty | 10" × 3-1/2"Rubber | Swivel | 12-1/4" | $79.00 | View → | |
| 350 lbsHeavier duty | 10" × 3-1/2"Rubber | Swivel with Brake + brake | 12-1/4" | $102.00 | View → |




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