TORSIONAL COUPLINGS COUPLING SELECTION 7 Coupling Selection Worksheet for General Industrial Applications Customer Information: Date: ................................................. Name: ................................................................................................................... Company: .............................................................................................................................. Telephone: ................................................................ Fax: ................................................................ email: ............................................................................................. Anticipated order quantity/annual usage: .................................................. Brief description of appl ication/problem: ........................................................................ .................................................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................................................. Engine Information: Engine manufacturer: ........................................................................................................................................................................................... Model number: ................................................................................................................. Displacement: ........................................................................................................... Rated horsepower: ......................................................................................................... @ rated speed: ........................................................................................................ Operating speed or range: ........................................................................................... Idle speed: ................................................................................................................ Diesel Petrol Natural Gas Other (details: .................................................................................................. ) 2-stroke 4-stroke Number of cyl inders: Piston configuration: In-l ine Vee (angle: .............. ) SAE Flywheel size (J620D): ........................................................................... Please attach a drawing if non-standard Driven Equipment: Compressor Water Pump Hydraul ic Pump Generator/Alternator Other .................................................................. Shaft Ø or spl ine information: .............................................................................................................................................................................................................................. Equipment mounting: Flange-mounted to engine housing Independent of engine Driven from: Flwheel Front PTO Other (detai ls: .................................................................................................. ) Ambient operating temperature: ................ °C Mass moment of inertia (J or WR2): Engine: ............................................................................................................................. Flywheel: ................................................................................................................... Driven equipment: Sketch or notes (attach additional sheets if necessary): 1 . ............................................................................................ 2 . ............................... .................................................................... 3 . ............................................................................................ 4 . ............................... .................................................................... Torsional Coupling Selection for Internal Combustion Engine Applications When correctly sized and selected the torsional coupling will effectively dampen vibration and tune critical frequencies out of the operating range of systems driven by diesel, petrol or natural gas reciprocating engines. But to make sure the coupling will do it’s job as intended, the selection should be verified with a torsional analysis of the system. Misapplication of the coupling in an engine application frquently leads to coupling failure or system damage. Therefore contact the jbj Techniques Limited technical office, telephone: 01737 767493 or email: info@jbj.co.uk for assistance with coupling selection. We will ensure that the correct coupling size and stiffness is selected not only for proper nominal and maximum torque but also for the elusive factor of continuous vibratory torque which can otherwise melt or rupture an elastomeric coupling or damage other system components. Please copy and complete the information worksheet and fax it to jbj Techniques Limited technical office: 01737 772041 for selection. Alternatively fill in the on-line version found at www.jbj.co.uk/torsionalcouplingselection #DriveLineHarmony www.jbj.co.uk/torsional-couplings.html
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