Hamilton Caster’s HPI (Hamilton Precision Integrated) design can be found on select series of Hamilton’s heavy duty forged steel casters with load capacities ranging from 600 - 23,000 lbs. per caster. The new design improves the bearing’s element of contact and more than doubles the number of contact points. The HPI raceways are also 45% harder than conventional hardened raceways and the surface finish is a smooth 16 micro inches.
Casters equipped with the HPI technology swivel easily under heavy load and are said to outlast conventional swivel raceways in 24/7 operations such as automatic guided vehicles (AVGs) and tow-line carts.