Harmonic Drives's new FHA-C range of miniature hollow-shaft servo-actuators delivers 1.8Nm of torque and output speeds from 60 to 200rpm from a unit weighing less than half a kilogram. Available in three gear sizes and featuring a choice of gear reduction ratios up to 30:1, the actuator integrates an ac servomotor, gearbox, output bearing and encoder all in the one compact unit. It can be interfaced directly to all industry standard servo controllers or, alternatively, Harmonic Drive's own SC-610 digital servo controller, which features Windows based configuration software.