Description Overview Inventory number: E-2759 Three 4.5" extruders available: NRM Pacemaker III, Davis Standard Model 450H EXT, and Welex Nrm Pacemaker Iii Extruder 4.5" barrel diameter 24:1 L/D ratio 150 hp, 460 V DC motor directly coupled to 17.42:1 gearbox Non-vented and water cooled barrel Temperature panel with 5 barrel zones plus 3 additional zones Upgraded digital drive control 1975 vintage Davis Standard Extruder Model 450H Ext 4.5" barrel diameter 24:1 L/D ratio Non-vented and fan/air cooled barrel 5 barrel zones 17.21:1 gearbox ratio rated up to 175 hp with a 1.5 service factor Currently equipped with 125 hp DC motor with blower, 480 V Unitized control panel with 9 zones DC motor drive control Centerline height of 54.5" due to machine mounted on a 12" base Welex Extruder 4.5" barrel diameter 30:1 L/D ratio Vented and water cooled barrel Powered by a 250 hp DC motor with Spectrum drive Lufkin gear box model D165-611C with 10.03 gear ratio Unitized control panel with 5 barrel zones and 11 total zones Solid state plug-in instruments 460 V with cooling system 1982 vintage