Description Overview Davis Standard model DS15HM 1.5 inch extruder 24:1 L/D ratio 12.8:1 gearbox with a 1.25 service factor and maximum 20 hp capacity Belt driven by a 10 hp, 460 volt, 1725 rpm vector drive motor 42 inch center-line 100 rpm screw speed Barrel Air cooled, non-vented barrel with handy clamp Controls Unitized control panel with HES 808 digital temperature controllers