TORSIONAL COUPLINGS LF TORSIONAL MODEL 6 & 6B 22 Model 6 (Zytel®) Maximum Span L (mm) at Various Speeds* Coupling Size Speed (RPM) 500 600 720 750 900 1000 1200 1500 1800 LF2 Zytel® 2800 2570 2340 2290 2080 1980 1800 1630 1470 LF4 Zytel® 2800 2690 2460 2410 2210 2080 1900 1700 1580 LF8 Zytel® 3450 3150 28700 2800 2570 2440 2210 1980 1830 LF16 Zytel® 3730 3400 3100 3050 2770 2620 2390 2130 1830 LF25 Zytel® 4110 3760 3430 3350 3050 2900 2640 2360 2130 LF30 Zytel® 4470 4090 3730 3660 3330 3150 2900 2590 2310 *Maximum span is based on tube deflection and a critical speed 1.5x above operating speed The following guidelines cover additional considerations unique to the floating-shaft versions of the coupling. Use them together with the selection information for general applications or engine applications found on pages 7 to 9. 1 ) Torque Capacity Values for nominal torque T KN, maximum torque TKmax and continuous vibratory torque Tkw remain the same and are found in the table of Performance Data on page 8 and 9. 2 ) Stiffness values and wind-up Because 2 torsional rubber elements are used together in series, values from the Performance Data table on page 8 and 9 for dynamic torsional stiffness CTdyn static angular stiffness c w and static axial stiffness c a should be multiplied by one half. Values for wind-up should be doubled. 3 ) Misal ignment Performance Data table values for allowable axial misalignment are doubled for the standard element design. Values for the S-style version will be the same but can be increased by use of special-length sleeves. For further information contact jbj Techniques Limited technical office telephone: 01737 767493 or email: info@jbj.co.uk Model 6 (Rubber) Maximum Span L (mm) at Various Speeds* Coupling Size Speed (RPM) 500 600 720 750 900 1000 1200 1500 1800 LF1 2390 2185 1980 1930 1750 1650 1470 1300 1140 LF2 2770 2515 2260 2235 2000 1880 1680 1450 1320 LF4 2950 2690 2440 2390 2190 2060 1850 1630 1500 LF8 3400 3070 2795 2720 2460 2310 2060 1780 1630 LF12 3400 3070 2795 2720 2460 2310 2060 1780 1630 LF16 3660 3275 2970 2900 2610 2440 2160 1830 1650 LF22 3660 3275 2970 2900 2610 2440 2160 1830 1650 LF25 3910 3505 3125 3050 2690 2490 2110 1630 1470 LF28 3910 3505 3125 3050 2690 2490 2100 1630 1470 LF30 4270 3835 3400 3330 2920 2690 2290 1730 1500 LF50 4395 3990 3630 3530 3200 3020 2670 2340 2100 LF80 4395 3990 3630 3530 3200 3020 2690 2340 2100 LF90 4495 3940 3400 3300 2720 2390 1750 965 860 LF140 4750 4290 3835 3730 3300 3070 2640 2100 1860 LF250 5360 4830 4340 4240 3760 3480 3000 2390 2190 * Longer spans for given speeds are possible with Model 6B. Please contact jbj Techniques Limited technical office telephone: 01737 767493 or email: info@jbj.co.uk Also ask about maximum spans at higher speeds. #DriveLineHarmony www.jbj.co.uk/torsional-couplings.html
RkJQdWJsaXNoZXIy NzQyNjQ=