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 PTU/DTU 4" DURATOUGH Wheels combine innovative materials and rugged performance for dependable mobility in demanding applications. Designed with a high-tech polyurethane tread bonded to a durable polyolefin core, these wheels offer an ideal balance of strength, maneuverability, and floor safety.
The 4-inch diameter is perfect for carts, racks, and equipment that require smooth rolling in tight spaces. The DURATOUGH tread delivers excellent abrasion resistance, while the polyolefin core ensures lightweight yet robust support, even in environments exposed to moisture, cleaning agents, or debris.
With a non-marking surface, these wheels help preserve floor appearance—making them a smart choice for hospitals, labs, retail stores, food service, and light manufacturing environments. Whether you're upgrading or building new equipment, Durastar's PTU/DTU wheels offer proven performance backed by industrial-grade engineering.
Enhance your material handling solutions with Durastar's 4" PTU/DTU wheels—trusted for durability, floor protection, and ergonomic performance in every roll.
