Simmons Machine Tool Corporation has the broadest product line of machine tools for railway wheel shops. The modern mount wheel shop requires measuring equipment, wheel demount presses, axle lathes, wheel boring machines, mounting presses, and complete inspection equipment. The company's wheel lathe product line consists of the Hegenscheidt HP-165 Portal Wheel Lathe. This machine can safely re-profile 40+ wheel sets in an eight hour shift depending on wheel wear and diameter conditions. This machine is equipped with integral measuring systems for determining worn wheel profile and can be interfaced with the WSM-400 Wheel Set Measuring System. Also available is the Hegenscheidt PN-190 Friction Roller Drive Portal Type Wheel Lathe. The machine eliminates the effect of stress risers caused by conventional chucks.