www.jbj.co.uk/couplings.html#flender 34 #DriveLineHarmony ELPEX Series Design & Configurations Highly Flexible Couplings Coupling load under maximumand overload conditions Themaximum torque is the highest load acting on the coupling in normal operation. Maximum torques at a frequency of up to 25 times an hour are permitted and must be lower than the maximum coupling torque. Examples of maximum torque conditions are: Starting operations, stopping operations or usual operating conditions withmaximum load. TKmax ≥ TMax ⋅ FT For all load situations, the actual shaft misalignment must be less than the permitted shaft misalignment. Overload torques aremaximum loads which occur only in combination with special, infrequent operating conditions. Examples of overload torque conditions are: Motor short circuit, emergency stop or blocking because of component breakage. Overload torques at a frequency of once a month are permitted and must be lower than the maximum overload torque of the coupling. The overload condition may last only a short while, i.e. fractions of a second. Coupling load due to dynamic torque load For any information on this, please refer to Page E/18. Frequency of the dynamic torque load ferr ≤ 10 Hz frequency factor FF = 1.0 Dynamic torque load TKOL≥ TOL ⋅ FT Applying the frequency factor FF, the dynamic torque loadmust be lower than the coupling fatigue torque. Frequency of the dynamic torque load ferr > 10 Hz frequency factor FF = √(ferr/10 Hz) The check must bemade on the basis of the dimension tables. On request, couplings with adapted geometry can be provided. Checking shaft-hub connection TKW≥ TW ⋅ FT ⋅ FF Checking themaximumspeed For all load situations nKmax ≥ nmax Checking bore diameter, mounting geometry and coupling design Checking permitted shaft misalignment and restorative forces Technical Specifications The permitted coupling temperature is specified in the Temperature Factor FT table. In the case of chemically aggressive environments, please consult the manufacturer. Checking low temperature and chemically aggressive environment Power Ratings of the ELPEX Series Size Rated Torque TKN (Nm) 840 45000 135000 180000 18000 685 2570 2990 5 5 0.2 270 1600 4800 6400 640 22 660 770 2.2 2.2 0.2 320 2800 8400 11200 1120 38 780 910 2.6 2.6 0.2 375 4500 13500 18000 1800 63 970 1130 3 3 0.2 430 7100 21300 28400 2840 97 1160 1350 3.4 3.4 0.2 500 11200 33600 44800 4480 155 1410 1630 3.8 3.8 0.2 590 18000 54000 72000 7200 240 1710 1990 4.2 4.2 0.2 690 28000 84000 112000 11200 365 2060 2390 4.6 4.6 0.2 970 90000 270000 360000 36000 1100 3020 3510 5.5 5.5 0.2 Maximum Torque TKmax (Nm) Overload Torque TKOL (Nm) Fatigue Torque TKW (Nm) Dynamic Torsional Stiffness for 100% Load CTdyn (kNm/rad) Axial Ca (N/mm) Radial Cr (mm) Axial DKa (mm) Radial DKr (mm) Angle DKw (°) Permitted Shaft Misalignment at Speed n = 1500rpm Stiffness
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