GAM Gear Reducer 2011 Catalog - Electromate Industrial Sales ...

Sizing InformationDetermination of the Duty Cycle (ED)Selection of Optimum Gearbox for aContinuous Operation (S1)Data needed before selection can beperformed:1. Output profile2. Desired ratio (i)Calculations to be performed:1. Mean Output Speedn 2at a+ n 2ct c+ n 2dt d=> n 2m= ————————— = _____t a+ t c+ t d2. Root – Mean Output TorquetED = ——————a+ t c+ t dt cycleIf ED < 60% and (t a+ t c+ t d) < 20 minutes, perform acycle operation selection (S5)If ED > 60% or (t a+ t c+ t d) > 20 minutes, perform acontinuous operation selection (S1)Index1 Input2 OutputaAccelerationBMaximum AccelerationcConstantdDecelerationmMeanmaxMaximumnNominalpPauseSymbol Unit DescriptionED % Duty Cyclefs - Shock Factori - RatioJ kg-cm2 Moment of Inertian RPM Speedt s TimeT Nm TorqueZh - Number of Cyclesŋ % Efficiency3 n 2at aT 3=> T 2m= ———————————— + n t 2a 2c c T3 + n t 2c 2d d T3 2d= _____n 2at a+ n 2ct c+ n 2dt dSelection Criteria for Gearbox:1. Mean Output Speed must not exceed thenominal speed rating of the gearbox.n 2m• i ≤ n 1n2. Mean Output Torque must not exceed thenominal torque rating of the gearbox.T 2m≤ T 2nSee technical data tables for values of n 1nand T 2nSold & Serviced By:ELECTROMATEToll Free Phone (877) SERVO98Toll Free Fax (877) SERV099www.electromate.comsales@electromate.com