28/08/2012 - 04:00 am

Hamilton’s Premium Ultralast Wheels Last Longer and Roll More Easily

New Ultralast wheels Hamilton Caster, Hamilton, Ohio, 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 percent or more.

The new wheels are available in two standard designs. Standard Ultralast has a 3/8-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 3-1/4 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 percent. That rebound measurement also identifies rollability—indicating that Ultralast polyurethane scored as much as 110 percent higher than competitive materials.

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