Up to 350 lbs
Up to 6,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
High-capacity loads
Shock absorbing
Corrosion resistant
Outdoor / rough terrain
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.

Durastar MA Series Glass-Filled Nylon 4" Wheels offer robust performance for demanding mobility needs. Constructed with reinforced nylon infused with glass fibers, these wheels provide superior strength, impact resistance, and load support, making them a top choice for material handling and equipment applications.
Designed for smooth rolling and long-lasting durability, these 4" wheels are compact yet powerful—ideal for tight-clearance carts, racks, or mobile fixtures that need to perform under stress. Their composition offers high resistance to moisture, chemicals, and harsh industrial environments.
Whether you're navigating wet, dry, or abrasive conditions, the Durastar MA Series ensures consistent performance and longevity. Trusted by professionals in manufacturing, logistics, and facility maintenance, these wheels help reduce maintenance frequency while optimizing operational efficiency.
Upgrade your equipment with Durastar's 4" glass-filled nylon wheels and experience the durability, chemical resistance, and smooth rolling power built for today’s high-demand environments.
