Bonfiglioli - Houston Bearing and Supply

7.0 - EFFICIENCYThe parameter is defined as the relationship of the net power delivered to the output shaft « P 2 »tothe power applied to the input shaft « P 1 »: P 2P1(6)Indicative efficiency values are listed in the chart here after:(A2)ReductionsAll planetaryConfigurationCombined withworm gear unitCombined withright-angle unit1 0.97 — —2 0.94 0.73 —3 0.91 0.70 0.914 0.88 — —8.0 - OPERATING SPEEDInput speedn 1 [rpm]The speed the gearbox is driven at. The value is coincident with the motor speed if this is directlyconnected to the gearbox. In case the gearbox is driven through an external transmission, thegearbox input speed is the speed of the motor divided by the reduction of the external transmission.In this case, it is recommended that the input speed be lower than 1750 rpm.When selecting the prime mover, 4-pole motor, or lower speed motors, should be preferred.Output speedn 2 [rpm]It is calculated from drive speed « n 1 » and gear ratio «i»,asperthefollowing equation:n2n1 (7)i10