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.

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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*15CFM@29in.inHg(25m3/h@982mbar)

15CFM@29in.inHg(25m3/h@982mbar)

15CFM@29in.inHg(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.

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* 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)