(Enclosed Track) - Gorbel

INTRODUCTION to WORK STATION CRANES

(Enclosed Track)

Questions? Concerns? Comments? Please call (800) 821-0086 1

INTRODUCTION to WORK STATION CRANES

Description & Applications:

Properly Applied Gorbel® Work Station Cranes (WSC’s):

• Featureenclosedtrackdesignthatismoreergonomicthanmanyothercranetypes• Aredesignedforthelighterloads(under4000lbs/1814kg)seenintoday’sindustry• Areexceptionallyversatile,andcanperformawidevarietyofmaterialhandlingandspotting applications• Areeconomicalenoughtobedevotedtoindividualworkstations• Canincreaseworkersatisfaction• Canencouragesafeworkpractices• Providearapidreturnoninvestmentthroughincreasedproductivity(refertotheErgoStudy)• Oftensimplifytheinstallationprocedure• Candecreaseinstallationcosts• Offerawidevarietyofoptions,capacities,andmaterials

Gorbel Manufactures the Following Basic Categories of Work Station Cranes:

• FreeStandingandCeilingMountedsteelbridgecranes(GLCseries)• FreeStandingandCeilingMountedaluminumbridgecranes(ALseries)• FreeStandingandCeilingMountedstainlesssteelcranes(SSseries)• Monorailsofsteel(GLMseries),aluminum(ALMseries),andstainlesssteel(SSseries)

Bridgecranescoverrectangularworkareas.Monorailsystemscanbeusedtocovervariousworkareashapes,ortolinkworkareastogether.Acranesystemcanbereadilyadaptedformoresophisticatedapplicationsbytheadditionofextramonorailtracks,curves,andtransfersthatcanbeeasilyconformedintoatotalsystem.

Gorbel also manufactures complimentary products and accessories, such as:• OffsetLoadPlatforms• TelescopingBridges• NestedTrolleySaddles• TractorDrives• G-Force®IntelligentLiftingDevicesPleasecontactGorbelfordetailsontheseandotherspecialproducts.

Warning:Equipmentdescribedhereinisnotdesignedfor,andshouldnotbeusedforlifting,supportingortransportinghumans.Failuretocomplywithanyoneofthelimitationsnotedhereincanresultinseriousbodilyinjury,death,and/orpropertydamage.


Advantages of WSC’svs. I-Beam or Patented Hard Track Cranes:

Compared to Many I-Beam Crane Designs, Gorbel® WSC’s:

• Aremoreergonomic• Canencouragesaferworkpractices• Canincreaseproductivityupto28%(seetheErgoStudy)• Are3-4timeseasiertomove• Utilizeacoldrolledsteelorstructuralaluminumwithalowweight-per-footratio• Reducedeadweight;lettheoperatorconcentrateonmovingtheloadinsteadofthebridge• Areavailableforseveraldistinctcapacities• Don’thavemillscale• Featureenclosedtrackdesign---helpskeepoutdustandcontaminantsforacleanerrollingsurface• Havelowerrollingresistance• Extendthelifeoftrolleyandendtruckwheels• Areofteneasiertoinstall,thusloweringinstallationcosts• Usuallyexertlessforceonsupportingstructures,thusprovidingasolutiontoalargernumberof applications• Areavailableinlongerspans• Requirefewersupportcenters• Offerbetterheadroom• Permitamuchlargerpercentageofthepopulationtosafelyoperatethem

Thechartbelow(basedon1000lb.capacity,20’span,14’heightunderbridge)showshowmucheasierGorbel®cranesaretomoveandhowmuchlessdeadweighttheycarrythancertainothercommoncranetypes:

TheErgonomicStudycompletedbytheRochesterInstituteofTechnologyfurtherdemonstratesthebenefitsofGorbel®enclosedtrackWSC’scomparedtoI-beamdesigns.AvideocassetteregardingthestudyisalsoavailablethroughGorbel’sCustomerServiceDepartment.


Degree of Movement Difficulty

Approximate Force

to Move

Bridge & End Truck Dead

Weight

Gorbel® WSC (aluminum) easiest 8lbs. 226lbs.

Gorbel® WSC (steel) easy 10lbs. 326lbs.

Traditional I-beam crane 3-4timesharder 31lbs. 925lbs.

Patented (hard) track crane 2-3timesharder 21lbs. 658lbs.

Advantages of Rigid Runway Systemsvs. Articulating Runways:

Gorbel®WorkStationCranesfeaturerigid,traditionally-hungrunwaysystems,whichhaveseveraladvantagesoverthearticulatingrunwaystyle.Rigidsystemsdifferfromarticulatingsystemsinthattherigidsystemsdonothavehangersthatallowtherunwaystofreelyswingorpivot.

Compared to Most Articulating Systems, Gorbel’s Rigid Systems:

• Areeasiertoinstallanddecreaseinstallationcosts• Offermoreheadroom• Havelessriskoflooseninghardware• Havefewermovingparts/lesstomaintain• Offereasierpositioning• Havetruefreestandingcapability(Articulatingsystemsrequireaseparatesupportstructuretobe built,whichcanincreasecosts.)• Requirelesssteel,sotheyarelessexpensiveandweighless• Donotrequiresafetycables• Donot“crab-walk”downtherunway,evenwhentheloadisatthefarendofabridge.(“Crab-walking” iswhenoneendofabridgemovesaheadoftheotherontherunwaysystem,thusthebridgeis nolongerperpendiculartotherunways.Gorbel’srigiddesignpreventsthisfromhappening.)• Featureanti-bindingendtrucks---nomatterwherealoadisonarunway,itiseasytomove• Utilizetrussedrunwaysthatcanactasstringersbetweensupportcolumns,thuseliminatingtheneed forextrastructuralsteel

Considerations for Selecting a WSC:

Selection of the Correct Work Station Crane Should Be Based Upon:

• Cycletimes• Thesizeandshapeoftheworkareatobeserviced• Thetypeandextentofthestructuralsupportavailable• TherelativecostofeachWSCtype• Thecapacityoftheload• Thecrane’senvironment• Theoverallcostofinstallation• Howthecranewillaffecttheefficiencyoftheworkarea• Howthecranewillbeusedindailyoperation

NotethatGorbeldesignsworkstationbridgecranesthatcanspanupto30feet!Thiscanreallysaveoncosts,sincemostbuildingsaredesignedforsupportcentersofatleast20feet.Thelongeracranecanspan,thefewerthenumberofhangersandsupportstructuresthatarerequired.AlsonotethatGorbelofferstheversatilityofhaving(veryergonomic)aluminumbridgeswithlong-spanningsteelrunways.


Definition of Terms:

ProperapplicationofWorkStationCranesdependsuponthethoroughunderstandingoftheassociatedtermsandparameters.ThefollowingisalistoftermsthatshouldbeunderstoodbeforetheselectionofaGorbel®crane:

Anchor Bolt Load:Thetotalamountofforcethatisappliedtoeachsupportinganchorbolt;usuallymeasuredinkips.

Axial Load:Thetotalverticalforceappliedtothesupportingstructure.Formula:Axialload=(theoverallweightofthecrane)+(thedesignfactorxweightofliftedload).

Bridge Length:Theoveralllengthofabridge.Note: The Working Length or Hook Coverage of the bridge is less than the overall bridge length.

Buffer Assembly:Afloatingspacerthatridesintherunwaybetweentwobridges(orhoisttrolleys)topreventaconcentratedoverloadbetweenhangerpoints.Itphysicallyseparatesthebridgeortrolleysaminimumdistanceapart.

Column: Thecolumnofafreestandingbridgecraneisoneofthe“legs”onwhichthecranestands,andismadeofsquaretube.

Design Factor: Amultiplierincorporatedintoaformulatoallowforvariationsinthepropertiesofmaterials,manufacturing,operations,conditions,anddesignassumptions.ThedesignfactorforGorbel®cranesisbaseduponthecapacityofthecrane,plus15%fortheweightofthehoist,plusanadditional25%forimpact.Simplyput,Gorbel’sDesignFactor=(capacityx1.4).Gorbel’sdesignfactorfordeflectionisbaseduponthecranecapacityplus15%fortheweightofthehoistandtrolley(i.e.DeflectionDesignFactor=(capacityx1.15)).Itisimportanttodistinguishthedesignfactorfromthesafety fac-tor,whichisamuchlargernumber(typically5-8timesgreaterthanthedesignfactor).Italsomustbestressedthatthecraneshouldneverbeloadedbeyonditscapacity,regardlessofthedesignfactor,althoughitcanbeloadtestedto125%ofratedcapacity.

Deflection: Thedifferenceinelevationofthetrackbetweenanunloadedcraneandafullyloadedcrane;usuallymeasuredininches.TypicallyGorbel®bridgecranesaredesignedforL/450deflection,whereL=supportcenterdistanceorspan.

End Trucks:Devices,positionedoneachendofabridge,thatallowabridgetorollinarunwaysystem.

Festooning: Thecablesand/orhosesneededtosupplyelectricpower,air,etc.tothehoist.

Foundation:AllGorbel®freestandingbridgecranesdonotrequireaspecialfoundation;theycanbeusedwithastandard6-inchreinforcedconcretefloor.


Hanger Assemblies: Thedeviceswhichconnectaceilingmountedbridgecraneormonorailtothesupportingstructure.

Header:Thehorizontalmemberofafreestandingbridgecrane’ssupportstructure,madeoftwoback-to-backchannels,fromwhichtherunwaysarehung.

Kips:Kilopounds.Aunitofforceequalto1000pounds(453.592kg).

Overall Height (OAH): Thedistancefromthefloortothetop-mostpointonacrane(shouldincludehardware).

Span (of Bridge): Thedistancebetweenthecenterlineoftherunways.ThespanmustbedistinguishedfromtheOverall Length(OAL)ofbridge,whichislargerthanthespan.Formula (for most cranes):Span={OALbridge-(2xbridgecantileverdimension)}

Splice Joint:Usedwhenjoiningrunwaytracksectionstogether.Atrackspliceisusedtosplicethetracksectionstogether,andanadditionaltrussspliceplateisrequirediftrussedrunwaysneedtobejoined.

Support Center:Thedistancebetweenthecenterlineofthetwosupportcolumnsorhangersalongarunway.Notethatsupportcentersdeterminewhattrackstyleisrequired.

Supporting Structure:Fora free standingbridgecrane,thesupportingstructurereferstothesupport assembly,alsocalledtheGoal PostorEnd Frame,consistingofthecolumnsandheader.Foraceiling mountedsystem,thesupportingstructureistheceiling,includingtrusses,stringers,columns,etc.,fromwhichthecraneishung.

Trolley Saddle Height (TS):OnaFreeStandingBridgeCrane,thisistheheightfromthetopofthesaddleofthehoisttrolley(theclevispinfromwhichthehoistisactuallyhung)tothefloor.


Work Station Bridge Cranes with multiple bridges (options):A) MixedCapacitySystems-bridgesaresizedforindividualweightedload-runwaysaresizedforthecombined weightofallloads,sotheyuseaheaviertrackseriesB) BridgeBufferSystems-bridgesaresizedforindividualweightedload-runwaysaresizedfortheheaviest individualload,sotherunwaysusethesametrackseriesasthelargestbridge-bridgesarephysically separatedbywheeled,movablebridgebuffersC) SystemwithIntermediateStops-bridgesaresizedfortheindividualweightedload-runwaysaresizedforthe heaviestindividualload,sotherunwaysusethesametrackseriesasthelargestbridge-bridgesarephysically separatedbyinternalstopsorbumpers

Construction for Seismic Zones:Forthosecustomersinseismicconstructionzones,thedesigncriteriaofcranescansignificantlychange,dependingontheSeismicRating.PleaseconsultGorbel®CiustomerService.Painting and Special Finishes:Gorbeloffersseveralfinishestoourcranestosuitvarioustypesofneedsandenvironments.Somefinishesmayrequiresandblasting.With the STANDARD finish:• Ahighpressurewandisusedtosprayandwashtheentirepiece.• Onecoatofself-primingpaintisappliedthenthepieceisreadyforthebakingprocess.• Steelbridgesarepaintedyellow.Aluminum/StainlessSteelbridgesarenotpainted.• Steelcolumns,runwaysandmonorailsarepaintedblue,Aluminum&StainlessSteelcomponents aren’tpainted.• Althoughwetakegreatcareinpackagingyourcranesystemsforshipment,scratchingorchippingof thepaintmayoccurintransit.ThisisnottheresponsibilityofGorbel.• Atleastonespraycanofenamelpaintisincludedwitheachcraneorderforfieldtouch-up. Additionaltouch-uppaintcanbepurchasedthroughGorbel.

SeveralmanufacturerscurrentlymatchGorbel’sstandardcolors(indifferentpaintformulations)sothatbasictouch-uppaintcanbepurchasedatalocalhardwarestore,ifdesired: Dupont “Dulux” Semi-gloss: Yellow:F.S.33434 DUP4N31P Blue:F.S.25102 Sherwin-Williams: Yellow: GorbelYellow (bothtobeformulatedinmetallatex) Blue:GorbelBlue Strathmore: Yellow: Y13-0030 (alkydenamel) Blue:L13-0065 Valspar: Yellow:B289 (availableasindustrialenamelorepoxy) Blue:A58

The304 Stainless Steelcranesarenotpainted,sothatthefood-grade,contamination-freequalityofthestainlesssteelsystemismaximized.Aluminumcranesarenotpaintedforthisreasonalso.

GalvanizingisanalternatefinishavailablefromGorbel.Thisprocessincludesahot-dipzincgalvanizingofthecranesmajorcomponentstoincreasecorrosionresistance.Note:endtrucks,trolleys,andmiscellaneoushardwaremaybecoldgalvanizedifrequested.Werecommendthistreatmentonlyforsystemsthatuse1000seriesrailorhigher.

SandblastingisanotheroptioncommonlyperformedonGorbel®cranes,especiallyifanepoxyorurethanepaintistobeused.SandblastingistypicallyperformedtoSSPC-SP-10or-6(whiteornearwhite)specifications.Endtrucksandhoisttrolleysaretobesandblastedpriortospecialfinishes.

Customized paint colors and other finishing options are available upon request.Additionalcostsandleadtimesforspecialfinishesvary.PleasecontactaGorbel®CustomerServiceRepresentativeforinformation.


How to Select the Proper Gorbel® Crane:

Gorbelrecommendspurchasingacrane“kit”(i.e.atotalbridgeormonorailsystem)ifpossible,ratherthanbuyingindividualcomponentsseparatelytomakeacompletesystem.Ifakitcraneisdesired,thefollowingworksheetcanhelpinselectingthecorrectsteelcraneforeachapplication.ModelnumberswillchangeslightlyifAluminumorStainlessSteelisrequired.

(1) Determine Capacity:

A. Liveloadweight................................................................................................. ___________B. Grabweight(hook/hoistaccessories)............................................................... ___________C. Totalload(addA+B)......................................................................................... ___________

Gorbel®WSCdesignsallow15%ofcranecapacityforhoistweightand25%ofcrane capacityforimpact.Thereforetheliveloadcanequalthecapacity.Thetotalloadmustnot exceed1.15timesthecapacity.PleaseconsultGorbelwhenhoistweightorimpactvalues exceedtheabove,orwhenusingamagnet.Foryourreference:2000lbs.=1ton=907.18kg

(2) Determine Runway or Monorail Length

A. Hookcoveragerequired.................................................................................... ___________B. L8fromdimensionalpagesinbrochure............................................................ ___________C. Lengthofrunway/monorail={A+(2B)}fromabove......................................... ___________D. Addfestoonstack-uplength(L7)toCabove,toobtainoverallsystem length(OAL)................................................................................................ ___________

Be sure to be consistent between inches and feet. For your reference: 12 inches = 1 foot = 0.305 meters

(3) Determine Support Center Dimensions (L1)

UsetheGLCorGLM(untrussed)modelifandonlyif:

L1<=6’

UsetheGLCSorGLMS(trussedsteel)orALorALM(aluminum)modelifandonlyif:

L1<=20’

UsetheGLCSLorGLMSL(trussedsteel)modelifandonlyif:

L1<=25’

UsetheGLCSLXorGLMSLX(trussedsteel)modelifandonlyif:

L1<=30’

Note:GLCSLXisnotavailablefor250#.


How to Select the Proper Gorbel® Crane Continued...

Drawing of:

GLC

GLM (monorail)

GLCS, GLCSL andGLCSLX(the difference being inthe truss)

GLMS, GLMSL andGLMSLX (monorail)(the difference being inthe truss)

AL


How to Select the Proper Gorbel® Crane Continued...

Note: • Checktomakesurethedistancebetweenrunwayscanbemaintained.PleaseconsultGorbel ifthisisnotpossible. • Certain“void”spacesexistontrussedrunwayswherehangerscannotbeplaceddueto interferencefromthetruss.PleaseconsultGorbelifasupportpointmustbeplacedwhere atrussexists. • Thestandardsuppliedcantileverattheendoftherunwayis12”formodelswithSupport Centers(L1)lessthanorequalto6’.Thestandardrunwaycantileveris24”formodels with30’SupportCenters.Thestandardrunwaycantileveris18”formostothercranes. PleaseconsultGorbelifarunwaycantileverotherthanthesestandardvaluesisrequired. • SwayBracing(byothers)isrequiredwithaceilingmountedcranesystem.Swaybracingis notincludedintheWorkStationCranekitpricing.

(4) Determine Overall Length of Bridge (L): (skip to (5) below for monorails)

A. Hookcoveragerequired.................................................................................... ___________

B. L3(fromdimensionalpagesinbrochures)........................................................ ___________

C. L6(fromdimensionalpagesinbrochures)........................................................ ___________

D. Add(A+B+C)toobtainoverall length of bridge............................................. ___________

Note: • Besuretocheckthatthehookcoverageneedsaremet,especiallywithlargersystems.(End stops,festooncarriers,hoisttrolleysandloadbarstakeupspace!) • IfL<=23’,thestandardsuppliedcantileveratendofbridgeis12”for250#,500#,1000#&2000# capacities,and15”for4000#. • If23’<L<=28’,thestandardsuppliedcantileveratendofbridgeis18”. • If28’<L<=34’,thestandardsuppliedcantileverattheendofbridgeis24”. • Themaximumbridgelengthforsystemswith250#capacityis28’.PleaseconsultGorbel’s CustomerServicedepartmentifthisisnotpossible.

(5) Determine the Model Number of the Crane:

Pleaserefertotheappropriatepage,row,&columnintheWorkStationCranepricingsectionsofthe SalesManual,dependinguponthedimensionsandcapacityofthecrane.Thecranepricewillalso belisted.

The correct model number is_________________________________


Equivalent Center Load Information

EquivalentCenterLoad(ECL)informationisprovidedtohelpunderstandandcalculatetheforcesofmoresophisticatedbridgecranesystems,particularlythosesystemswithmorethanonebridge.

Determinethewheelloadingsofendtrucks:

Themaximumbendingmoment(M)producedbymovingconcentratedloadsoccursunderoneoftheloadswhenthecenterlineofthebeamismidwaybetweentheloadandthecentergravityoftotalloads(C.G.ofT.L.)(inthesketchabove,whena=a).

SolveforMmax.Then,ECL=(4M)/L.UsethechartaboveforECL.


TrackSize Span(ft.)6 8 10 12 14 16 18 20 22 24 25 26 28 30

150AL 1000 1000 800 550 390 290 215 165 125 90 80 0 0 0250 250

250S 500 500 500 500 500 350 270 250250SL 1000 1000 1000 1000 1000 850 850 650 550 350 250250AL 1500 1500 1280 965 690 500 380 275 215 160 135 115 75 0

500 500 125 30500S 1400 1400 140 1400 950 700 525 500

500SL 2000 2000 2000 2000 2000 1700 1300 1000 800 625 500500SLX 2400 2400 2400 2400 2400 1800 1350 1050 850 675 600 550 500 500500AL 2220 2220 1880 1555 1320 1020 780 610 480 375 335 295 230 01000 1000 390 110

1000S 2400 2400 2400 2400 2400 1800 1350 10001000SL 2400 2400 2400 2400 2400 2400 2000 1500 1250 1050 1000

1000SLX 2400 2400 2400 2400 2400 2400 2400 2300 1900 1500 1350 1250 1050 10001000AL 4000 4000 3900 3230 2750 2320 1790 1405 1120 895 805 720 575 0

2000 2000 825 380 1302000S 6000 6000 6000 6000 4800 3700 2800 2000

2000SL 6000 6000 6000 6000 6000 5800 4600 3600 2900 2400 20002000SLX 6000 6000 6000 6000 6000 6000 4900 3900 3100 2550 2300 2125 2050 20002000AL 4010 4010 4010 4010 3415 2965 2610 2215 1775 1440 1300 1175 955 0

4000 40004000S 6000 6000 6000 6000 6000 6000 4900 4000

4000SL 6000 6000 6000 6000 6000 6000 6000 5400 4400 4050 40004000SLX 6000 6000 6000 6000 6000 6000 6000 6000 6000 6000 5400 4400 4050 4000

Note: ECL values are expressed in pounds.

Equivalent Center Load Information Continued...

R1=W1+W2+W3+W4-R2R2=[(W1)a+(W2)b+(W3)c+(W4)d]/L

Thusthesheardiagramisdrawn:

Fortheexampleshown:

Mmax =(R1)b-[(W1)(b-a)]

and

ECL =(4M/L) =(4/L)[(R1)b-{W1(b-a)}]

Note:Lowerflangeloadingmustnotexceedtheactualtrolleyorendtruckcapacityrating.TheseformulasaretobeusedinconjunctionwiththeECLchartonthepreviouspage.


Steel Track DimensionsGLC & GLM(Plain Track with 6’ Support Centers)

Note:Dimensionsareforreferenceonlyandaresubjecttochangewithoutnotice.

Steel Track DimensionsGLCS & GLMS(Trussed Track with 20’ Support Centers)


Steel Track DimensionsGLCSL & GLMSL(Trussed Track with 25’ Support Centers)



250# 500# 1000# 2000# 4000#

250#500# 1000# 2000/4000#

250# 500# 1000# 2000#4000#

CAPACITY H D B S E

250# 1.75” 1.9375” 0.5625” 0.138” 0.976”

500# 2.375” 2.56” 0.730” 0.157” 1.338”

1000# 3.048” 3.829” 0.875” 0.164” 1.694”

2000/4000# 3.5” 3.948” 1.0” 0.224” 1.9377”

CAPACITY L W T H D

250# 9” 1.5” 1.5” 1.75” 1.938”

500# 10” 2.0” 2.0” 2.38” 2.56”

1000# 11.048” 2.5” 2.5” 3.048” 3.829”

2000# 12” 2.5” 2.5” 3.5” 3.948”

4000# 18” 3.0” 4.0” 3.58” 3.948”

CAPACITY L W T H D

250# 11.0” 2.0” 2.5” 1.75” 1.938”

500# 12.375” 2.5” 2.5” 2.38” 2.56”

1000# 13.923” 2.5” 3.0” 3.048” 3.829”

2000# 15.375” 2.5” 4.0” 3.5” 3.948”

4000# 20.0” 3.0” 4.0” 3.5” 3.948”

Steel Track DimensionsGLCSLX & GLMSLX(Trussed Track with 30’ Support Centers)


Aluminum Track DimensionsAL & ALM (Plain Track with 20’ Support Centers)



D

H

T

W

L

500# 1000# 2000# 4000#

150# 250# 500#

CAPACITY L W T H D

250# --- --- --- --- ---

500# 14.375” 2.5” 2.5” 2.38” 2.56”

1000# 17.048” 3.0” 3.0” 3.048” 3.829”

2000# 18.0” 3.0” 4.0” 3.5” 3.948”

4000# 21.0” 3.5” 5.0” 3.5” 3.948”

CAPACITY L W H D Max. bridge length

Max. bridge span

150# 7.5” 2.467” 1.66” 1.943” 23’ 20’250# 8.0” 4.0” 2.404” 3.303” 23’ 20’500# 10.0” 4.0” 2.563” 3.375” 23’ 20’

AL & ALM (Plain Track with 25’ Support Centers)150# 8.0” 4.0” 2.404” 3.303” 28’ 25’250# 10.0” 4.0” 2.563” 3.375” 28’ 25’500# 10.514” 5.0” 3.639” 4.016” 28’ 25’

AL & ALM (Plain Track with 30’ Support Centers)500# 12.639” 5.0” 3.639” 4.016” 34’ 30’

Aluminum Track DimensionsAL & ALM (1000# Capacity)





Max. bridge length

Max. bridge span L W H D

Plain 8’ 6’ 5.154” --- 3.639” 4.016”

Reinforced 23’ 20’ 10.514” 5” 3.639” 4.016”

Reinforced 28’ 25’ 12.639” 5” 3.639” 4.016”

Reinforced 34’ 30’ 14.139” 5” 3.639” 4.016”

Max. bridge length


Plain 8’ 6’ 5.653” --- 4.139” 4.166”

Reinforced 15’ 13’ 11.014” 5” 4.139” 4.166”

Reinforced 23’ 20’ 13.139” 5” 4.139” 4.166”

Reinforced 28’ 25’ 14.639” 5” 4.139” 4.166”

Reinforced 34’ 30’ 15.514” 6.5” 4.139” 4.166”




© 2012 by Gorbel, Inc.All rights reserved.

Printed in the U.S.A.

Max. bridge length


Reinforced 10’ 8’ 11.236” 5” 4.361” 4.375”

Reinforced 15’ 13’ 13.361” 5” 4.361” 4.375”

Reinforced 20’ 18’ 14.861” 5” 4.361” 4.375”

Reinforced 28’ 25’ 15.736” 6.5” 4.361” 4.375”

Reinforced 34’ 30’ 17.786” 7.75” 4.361” 4.375”

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(Enclosed Track) - Gorbel

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