Gleason 537 Gear Quenching Press Machine Gleason 537 Gear Quenching Press Gear Quenching Specification: Maximum Diameter: 28″ (711mm) Minimum Diameter (bore or inner diam.): 6″ (152mm) Maximum Height: 8″ (203mm) Bottom of Upper Die Holder to Top Of Bottom Holder: 10″-22″ (254-558mm) Range of Adjustable Lower Die: 6″-16″ (152-406mm) Contact Us Visit AK Machine Tools