TORSIONAL COUPLINGS LF TORSIONAL MODEL 6 & 6B 23 For Model 6: r = (L-2Y)tanD For Model 6B: r = [L-2(Y+BT)tanD where D = angular misalignment (degrees), r = parallel misalignment (mm), and L, Y and BT (mm) are from the dimension table. Please note that angular and parallel misalignment values are dependent on speed and should be adjusted according to figure at bottom of page 10. 4 ) Which style, Model 6 or Model 6B? (HTR only) In general the basic Model 6 is suitable for most short or medium length spans (distance between shaft ends). Longer spans will require the bearing-supported floating shaft feature of the Model 6B. But regardless of length, some applications will still require the Model 6B design based on speed alone. Use the Maximum Speed and Length table to guide your choice or alternatively contact jbj Techniques Limited technical office, telephone: 01737 767493 or email: info@jbj.co.uk for assistance. Angular misalignment will be equal at both ends and should be kept within the limits given in the Performance Data table. Allowable parallel misalignment is related to the angular misalignment and the distance between shaft ends L. It is calculated by applying one of the two following equations: #DriveLineHarmony www.jbj.co.uk/torsional-couplings.html
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