With a reinforced cutting arm and rugged tool holders, Hunter's OCL430HD Rotor Lathe resurfaces rotors up to 17.5" in diameter and up to 3.5" in thickness. A 1.5-hp, 230 VAC motor provides the additional torque required for medium- and heavy-duty trucks. This hub-mounted service eliminates the need to disassemble the hub to remove the rotor. The patented ServoDrive system enables users to vary the spindle speed and rotational torque of the lathe while in operation. Pro-Comp computerized compensation adjusts for lateral runout with a push of a button and a simple single-point adjustment.