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.


Durastar Casters’ 34 SERIES with 4" Polyurethane on Glass-filled Nylon - MU (10mm Thick Tread) wheels are designed to meet the rigorous demands of medium to heavy-duty applications. These casters are built with durable construction and feature high-quality MU wheels that provide excellent traction and smooth movement across various surfaces while reducing the risk of floor damage.
Whether you are moving equipment in a warehouse, industrial environment, or commercial setting, the 34 SERIES casters offer superior load capacity and reliable performance. The top plate design ensures easy installation, providing flexibility for various mounting options.
Ideal for use in environments where durability, smooth movement, and floor protection are essential, Durastar Casters provide a cost-effective solution for your mobility needs. Choose Durastar for products that deliver consistent performance and long-lasting reliability.
Upgrade your equipment mobility with Durastar Casters’ 34 SERIES. Experience the unmatched durability and smooth movement that will optimize your operations and protect your floors. Get started today to elevate your equipment's performance.
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
