TORSIONAL COUPLINGS LF TORSIONAL PERFORMANCE DATA 8 * HTR = High Temperature Rubber ** Angular and parallel misalignment values are dependent on speed, and for rubber elements, they should be adjusted according to figure two on page 10. Hytrel® elements are only for applications where the driven component is located to the driver for essentially perfect alignment i.e. hydraulic pump flange-mounted to engine flywheel housing. *** The “S-Style” design is not constrained axially and allows hubs to move apart without creating axial force on the connected equipment. Special length S-Style fastener sleeves can further increase the allowable end float. ^ For Hytrel®, dynamic torsional stiffness values are non-linear with respect to torque. Value given is for 100% of nominal torque Contact jbj Techniques Limited Technical Office, telephone: 01737 767493 or email: info@jbj.co.uk for stiffness at lower torques. CPLG Size *Element Material Nominal Torque TKN (Nm) Maximum Torque TKmax (Nm) Maximum Speed (RPM) nmax Allowable Continuous Vibratory TorqueTKW (Nm) Dynamic Torsional Stiffness CTdyn Rubber 60 Shore A (Standard) (Nm/rad) Rubber 50 Shore A (optional) (Nm/rad) ^Hytrel® (Nm/rad) Zytrel® (Nm/rad) LF1 HTR 10 25 10000 5 140 90 - - LF2 HTR 20 60 8000 10 290 180 - - ZYTEL 30 60 10000 n/a - - - 6230 LF4 HTR 50 125 7000 20 850 550 - - ZYTEL 60 120 8000 n/a - - - 1650 LF8 HTR 100 280 6500 40 1500 900 - - HYTREL 100 280 6500 n/a - - 23000 - ZYTEL 120 280 7000 n/a - - - 46820 LF12 HTR 140 360 6500 50 4400 2700 - - LF16 HTR 200 560 6000 80 3400 2000 - - HYTREL 200 560 5500 n/a - - 36000 - ZYTEL 240 560 6000 n/a - - - 74000 LF22 HTR 275 750 6000 100 9000 6100 - - LF25 HTR 315 875 5000 125 4500 2800 - - HYTREL 350 875 5000 n/a - - 120000 - ZYTEL 370 800 5000 n/a - - - 111600 LF28 HTR 420 1200 5000 150 12000 7500 - - LF30 HTR 500 1400 4000 200 7800 4800 - - HYTREL 500 1400 4000 n/a - - 88000 - ZYTEL 550 1400 4500 n/a - - - 134100 LF50 HTR 700 2100 4000 300 19000 12000 - - HYTREL 800 2000 4000 n/a - - 262000 - LF80 HTR 900 2100 4000 320 25000 16000 - - LF90 HTR 1100 3150 3600 450 16000 10500 - - LF140 HTR 1700 4900 3600 700 40000 26500 - - HYTREL 1600 4000 3600 n/a - - 440000 - LF250 HTR 3000 8750 3000 1250 67000 43000 - - LF400 HTR 5000 12500 2500 2000 120000 75000 - - #DriveLineHarmony www.jbj.co.uk/torsional-couplings.html
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