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  • Falk Lifelign Gear Couplings Save Up Front Money and IncreaseEquipment Life (English-Inch)

  • Falk Lifelign Gear CouplingsRealize Life-Long Savings

    Initial SavingsFalk Lifelign couplings provide theeconomies budget-minded usersseek, without sacrificing couplingquality or reliability.Superior Bore Capacitiesand Torque RatingsThe unmatched bore capacities andtorque ratings of Falk Lifeligncouplings often allow you to select asmaller sized coupling for a givenapplication.In fact, selections for T frame, 60hertz electric motors result in a dropof one coupling size for half of the28 motor frames available. Theresult: quality, reliability andperformance with average savingsof 15-20% over competitiveofferings.The smaller overall size alsomakes Lifelign couplings wellsuited for limited space appli-cations that still require largebores and high torque loads. Idealfor Existing Applications Half forhalf interchangeability allows youto add capacity and realize theadvantages of Lifelign couplingson your existing appli- cations anddesigns, as well. Whats more,Lifeligns larger hubdiameter features more metal over thekeyway versus other designs,providinggreater reserve strength against hubfractures due to shock or impactloads.

    4-Point seal improves lubrication retention during misalignment;high-temperature seals are available AGMA bolt pattern makes Lifelign easily interchangeable

    with any standard coupling on your existing applicationsAGMA 20 full-depth tooth triple crowning eliminates tiploading, and reduces backlash and radial clearances

    High-strength Grade 8 Bolts provide addedprotection against failure

    Lube holes located near the tooth mesh to ensure anadequate grease reservoir during initial startup

    Massive Flex Hub provides the industrys largest bore capacityfor the most economical selection possible

    Non-turning prevailing torque locknut provides a reliablehold with fewer parts

    2

  • Greater Bore Capacity Higher Torque Ratings Designs to Meet aAGMACouplingSize1

    PopularCompetitiveBrands1.625

    FalkLIFELIGNCouplings

    1.875

    AGMACouplingSize1

    PopularCompetitiveBrands

    7,500

    FalkLIFELIGNCouplings

    10,080

    Diverse Range of NeedsG Standard FlangedSleeveGeneral purposeseries used on bulk11/2 2.250 2.375 11/2 18,900 20,790 handling systems,

    221/2331/24

    2.7503.5004.0004.5005.500

    2.8753.6254.1254.8755.750

    221/2331/24

    31,50056,70094,500

    151,200220,500

    37,80066,150

    107,100163,800270,900

    paper machines,fans, pumps,cranes mixers,sugar mills, crush-ers and many otherhigh-torque41/2 6.000 6.750 41/2 302,400 371,700 applications.

    5 6.625 7.375 5 434,700 500,900 GC Continuous51/2 7.500 8.250 51/2 573,300 655,200 Sleeve67

    8.1259.625

    9.12510.875

    67

    749,7001,008,000

    800,1001,197,000

    Used on high-speed equipmentwith low inertiarequirements.G Large FlangedSleeveFor very hightorque applications,including powerplants, mining,cement, steel andmetal mills, paper,sugar, rubberand other largeindustrial plants.

    G10 Shrouded Bolt

    3

  • Lifetime SavingsLifelign Couplings are speciallydesigned to remain your mosteconomical solution by extendingmaintenance intervals, reducingwear and increasing service life.Advanced Lube SystemFalk Long Term Grease (LTG)eliminates routine lubrication cyclesfor up to 3 years. The location of thelubrication hole in the sleeveensures that an adequate greasereservoir will be maintained close tothe gear mesh. Plus, Lifeligns 4-

    Reliable, convenient fastenersHigh-strength, Grade-8 fastenersprovide added protection againstcoupling failure at the flange joint.To assure the easiest possibleassembly and disassembly, fastenersare zinc-coated to prevent corrosionand feature non-turning locknuts,which allowone-wrenchinstalla-tion withno

    SelectionRexnord supplies a complete range ofcoupling designs including, gear disc,grid, elastomer, composite, and fluidcouplings.ExpertiseRexnords extensive applicationsengineering expertise combines withour comprehensive product offeringto assure that you wind up with thebest choice for the job. and yourpreferred requirements.Packaged System Design

    point seal contact provides betterretention of lubricant, eliminatingthe axial seal movement that candraw lubricant out of the coupling

    washersrequired. Falk-Rexnord Other

    Rexnords unmatched variety of geardrives and power transmission com-ponents allows us to develop com-plete packaged systems for your

    should misalignment occur.For added reliability our standardseals handle a maximum continuousoperating temperature of 250F(121C) and a maximum intermit-tent temperature of 300F (149C).High temperature seals are avail-able, extending maxi-mum temperatures to400F (204C) for con-tinuousduty and500F(260C)for inter-mittent use.Triple crown protectionCrowning at the root, tip and face ofeach tooth helps minimize weardamage due to misalignment. Thistriple-crown effect eliminates tiploading, while also reducing backlashand radial clearances.

    You Get More thanCost Savings withFalk Lifelign CouplingsCapacityRexnord supplies the largest gearcouplings in the world for low-speed,high-torque applications or wherebore capacities of 10 to 52 arerequired.QualityRexnord pours its own castings andcompletely machines the componentsto assure maximum product integritywith minimum lead times.PerformanceRexnord can supply alloy steels forhydraulic hub removal, increasedwear resistance, or to increase torqueratings by an average of 60% for onlyabout a 30% increase in price. Thetorque boost can allowsmaller sizes to be used, thus signif-icantly reducing overall costs.

    power transmission needs. In manycases, pre-packaged systems offerdrop-in installation or replacement,minimizing installation time andcosts.Global Availability and SupportRexnords has 900+ distributor loca-tions and 300+ sales engineers,offering local availability on a globalbasis.3-Year Heavy-Duty WarrantyRexnord rewrote industry expecta-tions by offering the first 3-YearWarranty, standard, on all heavy-dutyproducts.Online SupportRexnord online support includesspares information and pricing, serv-ice data, product literature, quotingtools and engineering artwork.

    4

  • Selection Guide 451-110, October 2006Table of ContentsNomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Available Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9How to Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11Quick Selection Method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13Service Factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-15How to Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15CONTINUOUS SLEEVE GEAR COUPLINGS Dimensions & SpecificationsType GC02 Double Engagement . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Type GC05 Single Engagement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Type GC05 Floating Shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18STANDARD FLANGED SLEEVE GEAR COUPLINGS Dimensions & SpecificationsType G20 Double Engagement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Type G32 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Type G52 Single Engagement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Type G52 Floating Shaft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-23Type GV20 Vertical Double Engagement . . . . . . . . . . . . . . . . . . . . . 24Type GV52 Vertical Single Engagement . . . . . . . . . . . . . . . . . . . . . . 25Types G62/G66 Brakewheel, Straight Bores & G63 Disc Brake . . . . . 26Types G62 & G66 Brakewheel, Taper Bores . . . . . . . . . . . . . . . . . . . 27Type GL20 Slide Double Engagement . . . . . . . . . . . . . . . . . . . . . . . 28Type GL52 Slide Single Engagement . . . . . . . . . . . . . . . . . . . . . . . . 29Type G70 Disconnect, Inching Drives . . . . . . . . . . . . . . . . . . . . . . . . 30Type G72 Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Type GP20/52/82 Insulated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Type G82 Rigid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Type GV82 Rigid Thrust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Type GR20 Shear Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Type G Mill Motor & Taper Bores . . . . . . . . . . . . . . . . . . . . . . . . . . 36Engineering DataRecommended Commercial Keys for Bores With One Key . . . . . . . . 37Shaft Diameters & Ratings for NEMA 60 Hertz & 50 HertzMetric Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Maximum Bores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Recommended Bore Tolerances, Falk Steel Coupling Hubs . . . . . . . . 38Flanged Sleeve & Rigid Hub Details . . . . . . . . . . . . . . . . . . . . . . . . . 39Puller Bolt Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Torsional Stiffness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40WR2 Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Standard Filleted Keyways & Chamfered Keys . . . . . . . . . . . . . . . . . . 40Variable Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Misalignment Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41LARGE FLANGED SLEEVE GEAR COUPLI