1” thick mounting plate and ¾” thick plate steel legs continuously welded both inside and out.
Guaranteed-for-life 1 ½” dia. integrally formed with mounting plate, which won’t bend or break.
Two precision thrust ball bearings. The outer thrust bearing is 13” in diameter and boasts an impressive 234,000 lbs. load rating and the inner thrust bearing is 7” diameter rated at a comfortable 100,000 lbs.
A third highly specialized four point contact bearing supports the 1-1/2’ dia. integrally formed kingpin.
Stress proof steel, 2" dia for casters equipped with Press-on Poly & Nylast, all forged steel has 1-1/2” dia. axle except 8" x 3" has 1-1/4".
4 Position (-4SL)- convert swivel to rigid for straight line steering, robotically welded housing & CNC-milled slots assure long lasting, trouble-free performance.
(-SS) - prolongs caster life in harsh environments.
Hamilton engineers will custom design any caster to meet customer requirements.
The new Ultra Maxi-Duty with a load rating up to 40,000 lbs. per caster represents the highest capacity production caster series on the market today. Hamilton engineers started with a clean slate and built this series from the ground up with one task in mind: build the most durable 40,000 lbs. capacity caster possible! This new series is designed and built for extremely heavy duty applications such as shipbuilding, military, aerospace, and moving any other immense loads.
The UMD’s swivel design consists of two massive precision thrust ball bearings and a third highly specialized four point contact bearing that provides easy swiveling under extreme loads. This new series is offered in both single wheel and dual-wheel versions and all models are backed by Hamilton’s three year product warranty.
The Ulta Maxi-Duty Series (UMD) is backed by Hamilton’s Three Year Product Warranty. Refer to selection table for qualifying wheels.
#S-UMD2-104FST Swivel w/ Forged Steel Wheel