Dynaflex LCD, LCR manual Dynaflex Elastomeric Flexible Couplings Page 87, Application

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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS Page 87 of 124

Dynaflex® Elastomeric Flexible Couplings

Featuring: Dynafl ex® Shear-Type Couplings Dynafl ex® Spool-Type Couplings Dynafl ex® Bushing-Type Couplings Dynafl ex® LCR Series Couplings Dynafl ex® LCD Series Couplings

Effi cient power transmission and driveline component durability are among powertrain designers’ most impor- tant concerns. Increased durability and up-time are two characteristics demanded by purchasers of today’s complex and expensive machinery. These demands can only be met with reliable, trouble-free, smooth-running powertrains free from damaging loads which compro- mise component life.

Powertrain component life is determined by the load spectrum each component will experience during the machine’s service life. Reciprocating engines, such as spark-ignited gasoline and compression-ignited diesels, produce alternating torque loads which, when super- imposed on the steady driving torque, create alter- nating stresses in driveline system components which shorten component life and reliability. High transient start-up torques and misalignment caused by skewed rotational axes between driver and driven in electric motor, hydraulic and pneumatic drives also cause high imposed forces on driven components. These unwanted forces loosen bolted joints and cause spline fretting, clutch disk wear, bearing failure, gear tooth fatigue and shaft fatigue, among an array of other problems.

Elastomeric fl exible couplings solve these problems. They prolong driveline component life because they reduce the magnitude of imposed loads, attenuate vibra- tion in multiple planes, accommodate misalignments

in multiple planes, and act as barriers impeding noise created by meshing gears, engaging clutches, etc.

Elastomeric fl exible couplings are also maintenance- free. They require no lubrication or other maintenance throughout their service life. Among the large variety of coupling types available, LORD Corporation’s elasto- meric couplings offer the most comprehensive package of benefi ts available to the powertrain designer. LORD Corporation’s product lines include fi ve different elas- tomeric coupling styles which cover a wide range of application requirements.

Application

Application requirements suggest the coupling style needed to optimize powertrain performance and component longevity. Misalignment accommodation, torsional vibration isolation, transient shock dissipation and required service life are important parameters

to consider when selecting a coupling to fi ll specifi c application requirements.

A part’s listing in this catalog does not guarantee its availability.

 

To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf.

Rev.1 10/08

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Contents Dynaflex Elastomeric Flexible Couplings Dynaflex Elastomeric Flexible Couplings Page 87Application Product Lines Dynaflex Elastomeric Flexible CouplingsCoupling Application Guide Dynaflex Elastomeric Flexible Couplings Page 89Dynaflex Elastomeric Flexible Couplings Dynaflex Elastomeric Flexible Couplings Page 91 Features and BenefitsDynaflex Shear-Type Couplings Standard Bore Static HP at Specifications and DimensionsCoupling Part Diameters Number Lb-in Lb-in/deg Size ±20%Standard Bore Tolerances Dynaflex Elastomeric Flexible Couplings Page 93Bore Sizes Tolerance Dynaflex Elastomeric Flexible Couplings Dynaflex Spool-Type Couplings Dynaflex Elastomeric Flexible Couplings Page 95Spool Part Thread Coupling Configuration Capacity ChartNumber Diameter Thickness Attachement Bolt Circle Diameter Torque lb-in xPart Dimensions J-3424-2 Part Dimensions J-4624-1Dynaflex Elastomeric Flexible Couplings Dynaflex Bushing-Type Couplings Dynaflex Elastomeric Flexible Couplings Page 99Torsional Flexibility Selection GuideExample Recommended Misalignment LimitsParallel Arrangement Selection Dynaflex Elastomeric Flexible Couplings Page 101Series Arrangement Selection Radius Typical Socket DimensionsDia Dynaflex LCR Series Couplings Dynaflex Elastomeric Flexible Couplings Page 103Typical End Product Application Typical ApplicationsSpecifications Dynaflex Elastomeric Flexible Couplings Page 105Axial Parallel Part NumberDynaflex Elastomeric Flexible Couplings Page 107 Part Dimensions108 Dynaflex LCD Series Couplings Dynaflex Elastomeric Flexible Couplings Page 109Load Deflection Data Standardization of Proven ConceptTorque Load lb-in x Angular Deflection deg Load lb DeflectionDynamic Torsional Stiffness, Kθ Dynaflex Elastomeric Flexible Couplings Page 111Type 1 Dia Type 2 Dia Dynaflex Browning Bushing LCD Series Bore RangeNumber Dynaflex Elastomeric Flexible Couplings Page 113 Rated Performance CharacteristicsLb-in Lb-in/rad Rad Lb/in 114 Length Hole Dia Dynaflex Elastomeric Flexible Couplings Page 115No. HolesDynaflex LCD Series Couplings Installation Guide Dynaflex Elastomeric Flexible Couplings Page 117 InstallationFlywheels for Engine Mounted Torque Converters SAE J927 Nov Tapped HolesFlywheel to Flanged Shaft Direct LCD -01 Series Engine Flywheel to Keyed Shaft DirectStationary Equipment Having a Tapered Shaft Connection Vehicle Engine with Large Angle Drive RequirementsCoupling Requirements Application DataDesign Parameters Remote Driven UnitsData Required for Lord Coupling Recommendation Dynaflex Elastomeric Flexible Couplings Page 121Coupling Requirements