What construction this tier demands
Dual-wheel kingpinless construction is effectively standard here — two wheels per caster split the 20,000-30,000 lb load across two contact patches, keeping wheel diameter and deck height manageable while the rating stays extreme. Dual-row tapered roller bearings carry the radial weight and cornering thrust together. Forged steel or heavy polyurethane-on-forged-core wheels; the choice is set by the floor.
Floor and movement reality
Standard concrete fails at this load. The minimum is 6-8 inch reinforced concrete; embedded steel rail is the spec for permanent travel paths. Movement is powered without exception — a tow vehicle sized to an 80,000-120,000 lb platform. Plan the floor and the tugger into the project from the start, not after the casters arrive.
Common questions
Single wheel or dual wheel?Dual wheel is the norm at this tier — it keeps deck height down and adds shock and side-load stability a single wide wheel can't match.
What lead time?These are made-to-order builds. Expect several weeks; send the application detail early.
What's above this tier?The 30,000+ lb engineered-build ceiling. See the 30,000+ lb tier and extreme-duty collections.
Engineering review recommended
Send load per caster, floor spec, and movement method — we'll match the dual-wheel build and confirm lead time.
Call 844-439-4335
