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Page 10Coupling Selection GuideDRIVE POWERLOW: Up to 10kWYesHigh speed(motor speeds)Yes/NoTorsionallyflexibleYesSpiderDiscflexPinflexSpiderflexTyreflexCrownpinGearflexNoNoChainflex<strong>Renold</strong>flexMEDIUM: Up to 50kWYesHigh speed(motor speeds)Yes/NoTorsionallyflexibleYesSpiderDiscflexPinflexSpiderflexTyreflexCrownpinGearflexNoNoChainflex<strong>Renold</strong>flexHIGH: Above 50kWYesHigh speed(motor speeds)Yes/NoTorsionallyflexibleYesGearflexChainflexNoGearflexChainflexResilient and Soft Start Couplings
ØØPage 11OOCoupling Selection GuideØØAngularEnd floatƒƒOØØOParallel offsetTorsional flexibilityFlexible Couplings should be used ƒ to accommodate any combination of misalignment conditionsdescribed below.ƒAt installation all couplings should be aligned as near toØperfect as possible.1. AngularAngular misalignment is present when the shaft axes areinclined one to the other. Its magnitude can be measured at thecoupling faces.2. Parallel OffsetAxial misalignment is present when the axes of the driving anddriven shafts are parallel but laterally displaced.3. End float (axial)End float is the ability to accommodate a relative axialdisplacement of the connected shafts; achieved by slidingmembers or flexing of resilient components.4. Torsional flexibilityTorsional flexibility is a design feature necessary to permit shockand impulsive loadings to be suitably dampened. It is achievedby the provision of a flexible medium such as rubber, springs,etc., between the two halves of the coupling.SelectionIn order to select the correct type and size of coupling, thefollowing basic information should be known:Power to be transmitted(a) Normal.(b) Maximum.(c) Whether continuous or intermittent.Characteristics of the drive(a) Type of prime mover and associated equipment.(b) Degree of impulsiveness of driven load.ØSpeed in revolutions per minute(a) At which normal power is transmitted.(b) At which maximum power is transmitted.(c) Maximum speed.Dimensions of shafts to be connected(a) Actual diameter.(b) Length of shaft extension.(c) Full keyway particulars.SelectionWhen the input drive is not steady (i.e. not from an electricmotor), and/or the driven load is impulsive, the actual power ismultiplied by a Service Factor from the Table 2 (page 13).Selection Procedure1. Nominal power in kW to be transmitted = K.2. Select appropriate load classification from Table 1, denotedas either S, M or H.3. From Table 2, establish Service Factor(s) to be applied, takinginto account hours of operation/day and prime mover = fD.4. From Table 3 select factor for the required frequency ofstarts/hr = fS.5. Selection Power Ks = K x fD x fS6. Equivalent power at 100 RPM = Ks x 100RPM7. Check that coupling selected will accept the required shaftdiameters. Should shaft diameter exceed maximum permissible,then re-select using next larger size of coupling.www.renold.com
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Page 5 and 6: Page 03Renold CouplingsRenold have
Page 7 and 8: Page 05Typical ApplicationsDiscflex
Page 9 and 10: Page 07TheCollectionRigid CouplingR
Page 11: Page 09Coupling Comparison ChartNom
Page 15 and 16: Page 13Service Factors and Selectio
Page 17 and 18: Page 15Taper BushesMetric rangeBush
Page 19 and 20: Page 17SpiderflexGH1H2 H1H2 H1Assem
Page 21 and 22: Page 19Spiderjaw and SpiderwrapA me
Page 23 and 24: Page 21SpiderwrapH1H2H2LDBDBDBC1C2C
Page 25 and 26: Page 23PinflexEFDDB BC1C2C2 C2Type
Page 27 and 28: Page 25Pinflex Brakedrum CouplingGH
Page 29 and 30: Page 27CrownpinAn established pin/b
Page 31 and 32: Page 29CrownpinComponent SparesCoup
Page 33 and 34: Page 31TyreflexFL1C1TY40 - TY60L2C2
Page 35 and 36: Page 33DiscflexA general purpose fa
Page 37 and 38: Page 35DiscflexOrdering codeD 52 #
Page 39 and 40: Page 37ChainflexFOrdering codeC 63
Page 41 and 42: Page 39GearflexRenold Gearflex cons
Page 43 and 44: Page 41Adapted and Custom Gear Coup
Page 45 and 46: Page 43Gearflex Heavy Duty B series
Page 47 and 48: Page 45Gearflex Heavy Duty B series
Page 49 and 50: Page 47Gearflex High Misalignment D
Page 51 and 52: Page 49Gearflex A series Double Eng
Page 53 and 54: Page 51Gearflex High Speed Double E
Page 55 and 56: Page 53RenoldflexA torsionally stif
Page 57 and 58: Page 55RenoldflexL1AHABBF1L1AHABBF1
Page 59 and 60: Page 57RenoldflexRenoldflex Type Ar
Page 61 and 62: Page 59Operating PrinciplesOUTER Ou
Page 63 and 64:
Page 61‘Soft’ Starting600600600
Page 66 and 67:
Page 64Standard Available OptionsNo
Page 68 and 69:
Page 66Hydrastart Pinflex Coupling
Page 71 and 72:
Page 69Hydrastart Pulley - Dimensio
Page 73 and 74:
Page 71Noteswww.renold.com
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The best range of solution chain pr
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