PROFILE
At A Glance
GEMINI® CONICAL (GC) TWIN SCREW EXTRUDERS
• FirstAmerican-designedconicaltwinsbuiltfordemandingservice,maximumproductivity,andminimummaintenance.
• Rugged,highperformancegearboxwithovertwicethetorquecapacityandthrustbearinglifeofcompetitivemodels.
• Lowrpmscrewswithinternalsealedwater-coolingsystemsforprocessingRPVCpowderformulations.
• High-efficiencyThermafinair-cooledbarrelheatersandsealed,water-temperedscrewsforsimpleoperation,lowmaintenance,andenergysavings.
www.davis-standard.com
Davis-Standard’sGemini®seriesconicaltwinscrewextrudersprovidepipeandprofileprocessorswithprocessingflexibility,
lowmaintenance,andmaximumproductivity.ThisextruderlineincludestheGC-40(40mm),GC-61(61mm),andGC-65(65mm)
extruders,ACCdesignedwithacompactmachineconfigurationonasinglebasewithalternatedrivepositioningandsizing.
Theseextrudersareengineeredforcustomwindowprofiles,fenceprofiles,verticalblinds,capstockcoextrusionandmaterials
development,aswellasqualitycontrollaboratoryusage.
MACHINE DESIGN SPECIFICATIONS
Model GC-40 GC-61 GC-65
Scre
ws
Diameter,Front/Rear 1.6/3.4in.(40/86mm) 2.4/5.1in.(61/130mm) 2.5/5.1in.(65/165mm)
Length 34.9in.(886mm) 51.8in.(1,316mm) 51.8in.(1,316mm)
Speed(MaximumRPM) 38 26 26
TemperingSealedin,self-regulatingwaterorcirculatingoil
Sealedin,self-regulatingwaterorcirculatingoil
Sealedin,self-regulatingwaterorcirculatingoil
Drive FluxVectorAC,1750rpm,HP(kW) 20(15) 40(30) 50(37)
Gear
box
Ratio 17.56:1 30.1:5 30.1:5
Lubrication Forced Splash Splash
AGMAratingwith1.25SF,HP(kW) 20(15)@38RPM 78(58)@30RPM 78(58)@30RPM
MaximumTorqueperScrew,ft-lbs.(N-m) 1,400(1,900) 6,125(8,300) 6,125(8,300)
ThrustBearingL-10lifeat6000psi(414bar) 68,000hrs.@38RPM 84,000hrs.@30RPM 84,000hrs.@30RPM
ThrustBearingBasicDynamicCapacity 108,000lbs.(480Kn) 194,200lbs.(823Kn) 194,200lbs.(823Kn)
ThrustBearingMaximumContinuousLoad 32,000lbs.(140Kn) 58,700lbs.(261Kn) 58,700lbs.(261Kn)
Electr
ics
TotalConnectedLoad,460/3/60,A(kW) 72(56) 129(101) 150(115)
NumberofBarrelZones 3 4 4
TotalBarrelHeatingCapacity(460V),kW 14 32 32
NumberofDieZones,IncludingFlange/Adapter*
5 5 5
TotalDieHeatingCapacity(230V)kW* 8.2 11.8 11.8
Vacu
um
Vent
ing
PumpRatingandCapacity*[email protected](25m3/h@982mbar)
[email protected](25m3/h@982mbar)
[email protected](25m3/h@982mbar)
Gene
ral ApproximateWeight 5,600lbs.(2,540kg) 9,500lbs.(4,310kg) 9,500lbs.(4,310kg)
ApproximateOutput 50-180lbs./hr(20-80kg/hr) 100-400lbs./hr(45-180kg/hr) 120-600lbs./hr(54-272kg/hr)
GEMINI® CONICAL (GC) TWIN SCREW EXTRUDERS cont.
www.davis-standard.com
* Dependantuponoptionsselected.
DAVIS-STANDARD, LLC#1 Extrusion Drive
Pawcatuck, CT 06379-2313 | UNITED STATES Tel: +860-599-1010 | Fax: +860-599-6258
D-S BROOKES LIMITED18A Brewins Way | Hurst Business Park
Brierley Hill | West Midlands | DY5 1UF | UNITED KINGDOMTel: +44 (0) 1384 471930 | Fax: +44 (0) 1384 671734
DAVIS-STANDARD - CHINA Room 6717, Apollo Building | 1440 Yan An Road (M),
Shanghai 200040 | P.R. CHINA Tel: +86-21-6103 1713
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MACHINE DESIGN DIMENSIONS
Model GC-40 GC-61 & GC-65
A 52.8in.(1,340mm) 57.3in.(1,455mm)
B 69.5in.(1,765mm) 95.5in.(2,425mm)
H 70.0in.(1,780mm) 78.1in.(1,985mm)
L 84.9in.(2,155mm) 113.0in.(2,870mm)
W 40.0in.(1,015mm) 58.2in.(1,480mm)
