New Ultralast™ wheels are built to last—even under heavy loads and with continuous, higher speed use. The industrial wheels are made from new polyurethane materials enabling them to roll more smoothly and easily with loads up to 7,200 pounds. Recommended for continuous duty, power-towed and higher-speed applications on smooth surfaces, Ultralast wheels incorporate a new high performance polyurethane. The new material minimizes the heat buildup that can cause traditional polyurethane wheels to fail. During testing, Ultralast out-performed other options by 20% or more.
The new wheels are available in two standard designs. Standard Ultralast has a 3/8th-inch thick tread that is chemically bonded to a heavy-duty, cast iron center. Super Ultralast wheels incorporate a 1-inch tread molded to a super heavy-duty forged steel center. Custom wheel combinations are also available. The Ultralast polyurethane can be molded to Hamilton’s cast iron, forged steel and aluminum centers on finished sizes ranging from 3 ¼- inch to 20-inches in diameter. Ultralast wheels’ liquid cast polyurethane measure 93-94 on the Shore durometer scale with a tensile strength of 6500 psi and a Bashore rebound of 57%. That rebound measurement also identifies rollability—indicating that Ultralast polyurethane scored as much as 110% higher than competitive materials.