Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
View All Specialty Casters
Browse all specialty caster types
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.
Custom made to order. All sales final.
Each Hamilton product is custom manufactured for your order (lead time is shown on each product page). Please confirm all specs before checkout, since made-to-order items aren't eligible for returns, exchanges or refunds. Need help? Call 844-439-4335 or email info@casterhq.com and we'll verify fit for you.
2 options in this exact size and spec. See all Industrial Casters › or call 844-439-4335 for a cross-reference.


The 20,001-30,000 lb tier sits between the 15-20 ton extreme range and the 30,000+ lb catalog ceiling. A four-caster platform carries 80,000-120,000 lb — large machine tools, powergen sub-assemblies, heavy fabrication and defense platforms. Hamilton's Ultra Maxi-Duty UMD2 and comparable dual-wheel builds serve this band.
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.
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.
Search
