Up to 350 lbs · Light Duty Applications
Up to 7,200 lbs · Industrial Duty
Up to 17,500 lbs · Heavy Industrial
Up to 40,000 lbs · Extreme Load Applications
Up to 40,000 lbs · Increased Maneuverability
Up to 3,100 lbs · Industrial Shock Absorbing
Up to 3,200 lbs · Corrosion Resistant
Up to 8,400 lbs · Outdoor & Rough Terrain
1,000+ Styles · OEM Replacements
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.
Engineered for OEM, MRO, and defense. Spec-match guarantee, engineering RFQ on every quote, fastest shipping in the caster industry.


The Durastar Casters S34 SERIES is the ultimate choice for medium-heavy duty applications requiring durability and efficiency. Built with advanced Heavy Duty Polyolefin - HPO wheels, these casters provide exceptional wear resistance and long-lasting performance, even under the toughest conditions.
The 8" HPO wheels are engineered to offer superior floor protection while maintaining a smooth, quiet ride. Whether you need reliable casters for industrial carts, warehouse trolleys, or material handling equipment, the S34 SERIES delivers dependable performance that keeps operations running smoothly.
Designed with both safety and functionality in mind, these casters absorb shock and reduce the strain on users and floors alike. The top plate sizes are versatile, ensuring compatibility with a wide range of applications, and the sturdy construction is capable of withstanding the rigors of demanding environments.
Durastar Casters' S34 SERIES combines high-quality materials and innovative design to offer a superior mobility solution. With their exceptional load-bearing capacity, ease of maneuverability, and long-lasting durability, these casters are the perfect choice for any heavy-duty or industrial setting.
Upgrade your equipment with Durastar Casters S34 SERIES and experience the difference in performance and reliability. Designed for professionals who demand top-tier mobility solutions, these casters will keep your operations moving efficiently and safely.
These calculators apply to any caster application—even if you’re browsing a different category. Use them to estimate load rating per caster, select wheel material, and estimate push/pull force. Expand any tool for full analysis + a share-ready spec line.
Engineering Tools Hub
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Load Calculator (dedicated)
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Wheel Diameter Calculator
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Failure Diagnosis Tool
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Designed for engineers, manufacturers, and material handling professionals
