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.
Machined solid steel is the top of the metal-wheel range — the maximum weight capacity, impact strength, and durability of any caster wheel. Where ductile and forged steel reach their limits, machined steel keeps going. The spec for the most extreme metal-wheel applications: foundry, forge, steel mill, and rail.

Most heavy applications are served well by ductile or forged steel — they absorb shock, carry heavy loads, and survive heat. Machined solid steel is the next step, reserved for the applications that genuinely push past what forged steel handles: sustained extreme loads, severe repeated impact, steel-on-steel rail systems, and the hottest foundry and forge environments. It is durable to a degree no polymer and few metals match.
Machined steel is the harshest wheel type for floors — under sustained heavy load it will damage concrete. It only belongs on steel rail, embedded track, or distribution-plated paths, or in environments where floor condition is not a concern. It is also heavy and transmits all shock into the load. You choose machined steel when capacity and durability are the only priorities that matter.
