H3-FV9-B flender getriebe reparatur Helical speed reduction gearbox H3

Flender/Flender Gear Units/Helical speed reduction gearbox H3

es , II... require power , PII ... Pn and the respective power ratings operate for time fractions XI, XII...Xn is taken as basis. The equivalent power rating can be calculated from these specifi-cations with the following formula: The size of the gear unit can then be determined analogously to points 1.1 ... 1.5 and 3. The following applies: Then, when 2N has been determined, the power and time fractions must be checked by applying the following require- ments: The individual power fractions PI, PII... Pn must be greater than 0.4 P2N. The individual power fractions PI, PII ... Pn must not exceed 1.4 P2N. If power fractions PI, PII ... Pn are greater than P2N, the sum of time fractions XI, XII ... Xn must not exceed 1 %. If any one of the three requirements is not met, P2eq must be recalculated. It must be borne in mind that brief peak power rating not included in the calculation of P2eq must not be greater than Pmax = 2 P2N. In applications where the torque is variable but the speed constant, the gear unit can be designed on the basis of the so?called equivalent torque. gear unit design which is finite-life fatigue-resistant can be sufficient for certain applications, for example, sporadic operation (lockgate drives) or low output speeds ( 2 < 4 rpm). Example: Service classificationn II I1XI 1XIIP2eq = 1Xn+ 6.6+ ... 6.6.6 6.6 P2N P2eq f1 f2 P2eq G_MD3_EN_0Xl=1% =1%XlV=1% XlI=3% XlII=4% II III IVPllPlP XPlll PlV Siemens AG 2 Design of the gear units Guidelines for selection Key to symbols 3/5 Siemens MD 3.1 2Overview Key to symbols Notes and legend for tables of thermal capacities PGA (kW): Gear units without auxiliary cooling; Values refer to: Operating cycle 1 %, Installation in large hall, Altitude up to 1 GB (kW): Gear units with fan; Values refer to: Operating cycle 1 %, Installation in large hall, Altitude up to 1 mP GC1 (kW): Gear units with built-in cooling coil; Values refer to: Operating cycle 1