Dynaflex LCD Dynaflex Elastomeric Flexible Couplings Page 111, Dynamic Torsional Stiffness, Kθ

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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS Page 111 of 124

Dynamic Torsional Stiffness, Kθ

The dynamic torsional stiffness is higher than the static stiffness at room temperature. When the LCD Series Couplings are attached to diesel engine fl ywheels, the elastomer gets warm. At an operating temperature in the 170° to 200°F range, the dynamic stiffness is nearly the same as the static stiffness at room temperature. The stiffness values shown in the performance characteristics chart are for computer modelling and in other types of torsional analysis work.

Static Load Deflection Characteristics of LCD-0400-01-A & -C and LCD-0400-04-A & -C

Curves of other LCD parts show similar characteristics and are available upon request.

Typical Applications

Dynafl ex LCD Series Couplings are useful for a wide range of rotary drive applications, from off-highway truck drivelines to auxiliary compressor drives on diesel loco- motives. The soft torsional stiffness of these couplings makes them ideally suited for diesel applications with remotely mounted driven components. Typical applica- tions include:

Typical End Product

Application

 

 

Mining Dump Truck

Increases Engine and Transmission Life

 

 

Diesel Locomotive

Eliminates Accessory Driveline Failure

 

 

Portable Air Compressor

Replaces Short-Lived Gear Coupling;

 

Smooth Operation

 

 

4-Wheel Drive Farm

Reduces Noise and Extends Drive Train

Tractor

Life

 

 

Military Vehicle

Eliminates Accessory Shaft Breakage

 

 

Dynamometer

Prevents Driveline Failure

 

 

Mining Dump Truck

Prolongs U-Joint Life

 

 

In addition, Dynafl ex LCD Series Couplings have been used in these types of applications:

• Main Drive

 

Engine – Generator

Engine – Compressor

Engine – Transmission

Engine – Pump

Electric Motor – Pump

Electric Motor – Compressor

• Accessories

 

Starters

Fans and Blowers

Alternators

Power Take-Offs

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