COLD FEED RUBBER SILICONE EXTRUDERS cont.

www.davis-standard.com

ELASTOMER

At A Glance

COLD FEED RUBBER SILICONE EXTRUDERS

• Availableasasiliconestrainer,withaverticalcrosshead,andinLo-Boyconfigurations

• Uniquepneumaticrollerfeedertocompensateforfeedstripvariations

• Optionalstainlesssteelhopperwithsightglassforpelletstockcapability

www.davis-standard.com

Forlaboratory,coextrusion,andsiliconestripingapplications,Davis-Standardmanufacturesacompletelineofcoldfeedrubbersilicone

extruders.Availableinseveralconfigurationsandsizesrangingfrom11/2-inch(40mm)to8inches(200mm),theseextrudersoffer

processorsthetypeofversatilityanddependabilityrequiredforlaboratoryandspecialtyrubberapplications.

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MACHINE DESIGN PARAMETERS

Size 1 ½ in. (40mm) 2 in. (50mm) 2 ½ in. (65mm) 3 ½ in. (90mm) 4 ½ in. (115mm) 6 in. (150mm) 8 in. (200mm)

Phys

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Extruder Approx. wt.

1,700lbs.

(771kg)

2,000lbs.

(907kg)3,250lbs.(1474kg)

5,250lbs.

(2381kg)

8,650lbs.

(3924kg)

11,500lbs.

(5216kg)12,000lbs.(5443kg)

Center Line421/4in.

(1073mm)

421/4in.

(1073mm)

421/4in.

(1073mm)

421/4in.

(1073mm)421/4in.(1073mm)

421/4in.

(1073mm)421/4in.(1073mm)

Length 47in.(1194mm) 51in.(1295mm) 61in.(1549mm) 78in.(1981mm) 97in.(2464mm) 127in.(3226mm) 120in.(3048mm)

Width 43in.(1092mm) 43in.(1092mm) 45in.(1143mm) 62in.(1575mm) 66in.(1676mm) 71in.(1803mm) 71in.(1803mm)

Screw Removal 33in.(838mm) 37in.(940mm) 55in.(1397mm) 60in.(1524mm) 73in.(1854mm) 96in.(2438mm) 86in.(2184mm)

No. Barrel Zones 1 2 2 2 2 3 2

L/D Ratio1 10.5:1 10.5:1 10.5:1 10.5:1 10.5:1 10.5:1 7:1

Standard Feed Strip

3/8x13/4in.

(10mmx44mm)

3/8x21/4in.

(10mmx57mm)

3/8x23/4in.

(10mmx70mm)

3/8x33/4in.

(10mmx95mm)

3/8x43/4in.

(10mmx121mm)

3/8x61/4in.

(10mmx159mm)

3/8x81/4in.

(10mmx210mmmm)

Gear

box

Gear Ratio 6.53:1 6.53:1 17.26:1 17.39:1 17.36:1 17.21:1 17.21:1

Thrust Bearing B-10 Life 500,000 398,000 546,000 421,000 137,000 257,000 32,000100 RPM 5000 psi

Standard Rubber HP 15HP 20HP 30HP 60HP 125HP 200HP N/A

Standard Silicone HP 5HP IOHP 20HP 40HP 60HP 100HP 125HP

Standard Timing 5ORPM 50RPM 60RPM 60RPM 5ORPM 40RPM 40RPM

Max. Rating .33HP/RPM .33HP/RPM .76HP/RPM 1.58HP/RPM 2.24HP/RPM 5.44HP/RPM 5.44HP/RPM

Serv

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Rubber Drive & Temp. Control2 46FLA 62FLA 78FLA 120FLA 232FLA 343FLA N/A

Silicone Drive Only 15FLA 21FLA 33FLA 65FLA 91FLA 152FLA 180FLA

Water3 5GPM l0GPM 14GPM 27GPM 34GPM 40GPM 45GPM

Inlet & Outlet Pipe Size 1in.(25mm) 1in.(25mm) 1in.(25mm) 11/2in.(40mm) 11/2in.(40mm) 11/2in.(40mm) 11/2in.(40mm)

Closed Loop Tank Capacity 15gal.(57liters) 15gal.(57liters) 15gal.(57liters) 15gal.(57liters) 30gal.(114liters) 30gal.(114liters) 30gal.(114liters)

Air Requirements (Static) 50PSI 50PSI 50PSI 50PSI 50PSI 50PSI 50PSI

Basedonstandardvoltage460/3/601OptionalL/DRatiosAvailable2BasedonStandardDrive&TemperatureControl3SystemNormalTemperatureProfiles

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

COLD FEED RUBBER SILICONE EXTRUDERS cont.

www.davis-standard.com

SUPERIOR GEARCASE

• Horizontallymounteddoublereductionparallelshaftreducerwithintegralthrustbearingforsimplicityandeconomy.

• Singlereductiongearboxfor11/2-inch(40mm)and2-inch(50mm)extruders.

• Leak-free,non-contactinglabyrinthoilsealsneverwearout,eliminatingexpensiveoilsealmaintenance.

• Thrustshaftismountedonpre-loadedradialbearingstomaintainperfectscrew-to-barrelalignmentinspiteofheavybullgearradialloading.

• Singlehelixgearteethforquiet,vibration-freeoperation.

• AllgearingmachinedtoAGMAClass11specifications.

• Lubricationsuppliedtothegearsandbearingsbyanexternallymounted,positivedisplacementgearpumptoprovideampleoilthroughtheentireRPMrange.

PRESSURE ROLLER FEED

• Automaticfeedrollregulationwithminimaloperatorrequirements.

• Feedrollrateregulatedbyapneumaticallycontrolledtorque-sensingclutchdrivenfromthemainthrustshaft.

• Uniform,consistentfeedratethatautomaticallycompensatesforfeedstripsizevariations.

• Right-handfeedisstandardwithleft-handasanavailableoption.

• Feedsectionisamachined,highstrengthcastingcoredforwatercooling.Includesinstalledpipingandvalvesforthermalcontrol.

EXTRUDER BARREL

• Wear-resistantlinerofiron/boronbimetallicmaterialcastintoa4140steelbarrelassembly(harderalloysavailable).

• Integralliner/jacketconstructionprovidesmaximumheattransferefficiencyandmulti-zonefeature.

• Temperaturecontrolviaexternalwatercirculatingunitorcustomerplant,orchilledwatersupply.

• Barreldesignedforoperatingpressureupto10,000psi.

• Operatingtemperaturesrangefromwatersupplytemperatureto250ºF(121ºC).

• Barrelsuppliedwithrupturediscforoverpressureprotection.

HEAD CLAMP

• Doubleswingboltsprovideuniformsymmetricalclampingbydrawingthetaperedflangeswiththebreakerplateforpositivesealingandextrusionheadalignment.

HINGED HEAD SUPPORT

• Hingescanbemountedontheleft,right,orbothsides.

•Hingesdesignedforrapidheadclosureandalignment.

• Hingesareadjustableforproperalignmentandmaybeswungtothesideofthemachineforpreheating,cleaning,andtoolchanges.

• Hydraulicclampsalsoavailable.

ASSOCIATED EQUIPMENT (STANDARD)

• Stockscrew,coolingpipe,andunion

• Breakerplate,screens,orspacerring

• Belts,sheaves,andbeltguard

• Pressuretransducerandindicatorwithhighalarmshutdown

•Maintenancemanuals

• Pressurealarms(hi-low)

ASSOCIATED EQUIPMENT (REQUIRED)

• Extrusionstockscrew

• Temperaturecontrolsystem

• Drivesystem

• Extrusionheads

OPTIONAL EQUIPMENT

• Commonbase

• OCS,drivecabinet,motormountedandwired

•Manifoldpiping

• Airpadsorcasters

• Pivotassembly

• Dualhinges

• Stocktemperatureindication

• Variousrollerfeedratios

• Stainlesssteelhopperandadapter

OPTIONAL EQUIPMENT cont.

• Lo-Boy

• Specialliners

• Optionalbreakerplates

• Screwjack(manual,auto)

• Fulllaboratory,instruments

• Extendedspeed(fieldweakening)

• Jogreverse

• Precisiondriveregulation

• Coordinateddrive

• Cleanroomgrade

• Specialpaint

1 ½ inch (40mm) 20:1 L/D 2 ½ inch (65mm) 20:1 L/D 3 ½ inch (90mm) 20:1 L/D – Lo-Boy 4 ½ inch (115mm) 20:1 L/D