www.jbj.co.uk/couplings.html#flender 15 #DriveLineHarmony ELPEX-S 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. Overload torques are maximum 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. T ≥ T • FT KOL OL 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. Coupling load due to dynamic torque load T ≥ T • FT Kmax Max The fatigue torque TKWmust be reduced by 50 %. In these particular operating conditions the coupling satisfies the requirements of temperature class T3 D160 °C. Applying the frequency factor FF, the dynamic torque loadmust be lower than the coupling fatigue torque. The fatigue torque TKWmust be reduced by 70 %. In these particular operating conditions the coupling satisfies the requirements of temperature class T4 D120 °C. Operation withmedium fatigue load. Operation in potentially explosive environments is subject to the following restriction: Operation with low fatigue load. Checking permitted shaft misalignment and restorative forces Dynamic torque load: T ≥ T • FF • FF KW W Checking themaximumspeed For all load situations, the actual shaft misalignment must be less than the permitted shaft misalignment. Checking shaft-hub connection Frequency of the dynamic torque load: f > 10 Hz frequency factor FF = √(f /10 Hz) err err For any information on this, please refer to page 10 of https://www.jbj.co.uk/e-publications/Flender-mechanical-power-transmission-couplingsavailable-from-jbj-Techniques-Limited/10/index.html The permitted coupling temperature is specified in the Temperature Factor FT table (page 14). In the case of chemically aggressive environments, please consult themanufacturer. Type EST is not permitted for application in potentially explosive environments. Frequency of the dynamic torque load: f ≤ 10 Hz frequency factor FF = 1.0 err Checking temperature and chemically aggressive environment Checking bore diameter, mounting geometry and coupling design The followingmust apply to all load situations: nKmax ≥ nmax Themaximum speed of a size depends only on the size of the outer flange (part 3). The check must bemade as per the dimension tables. On request, couplings with adapted geometry can be provided.
RkJQdWJsaXNoZXIy NzQyNjQ=