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.


The Durastar ERN Series 4" wheel combines premium-grade elastic rubber tread with a robust glass-filled nylon core to deliver unmatched performance in demanding environments. These wheels are engineered for applications that require quiet, smooth rolling with exceptional floor protection and load-bearing capability.
The elastic rubber tread offers a cushioned ride, absorbing shock and reducing vibrations—making it perfect for carts, racks, and material handling systems in healthcare, hospitality, commercial, and institutional settings. The non-marking material also protects sensitive flooring, including tile, vinyl, and epoxy-coated surfaces.
Constructed with a reinforced glass-filled nylon core, these wheels resist cracking, corrosion, and impact damage, ensuring reliable operation even in harsh conditions. Whether in wet, dry, or chemically exposed environments, the ERN wheel stands up to the challenge.
Upgrade your equipment with Durastar’s ERN 4" wheels—engineered for quiet performance, long life, and dependable support. A smart choice for efficient, ergonomic mobility in every roll.
