Harmonic drive servo actuators Used in applications with demanding requirements they provide precision motion control and high torque capacity in a very compact package. The power transmission of this actuator includes a bevel gear accompanied by a stainless-steel harmonic drive gearbox which leads to a very low mechanical backlash in output shaft. the reduction ratio of the actuator is 300 while is located in a very compact capacity thanks to the harmonic drive gearbox. Also use of hardened stainless-steel material in body frame has led to an integrated strong system. – The HDA series includes a brushed – brush less servo motor, precision reduction gear and potentiometer, electronic servo control and amplifier, all packed inside a low-weight compact high grade aluminum case. All parts used in this actuator such as electronic parts ( resistor, IC, capacitor and etc.) , potentiometer, motor and the connector are military grade and so have high reliability. This unit complies harsh condition requirements such as mechanical u0026amp; thermal shock, salt spray, stochastic vibration, linear acceleration, thermal cycle, humidity, low u0026amp; high temperature which is built to MIL-STD-810 standards.
| Actuator Names | HDA 8 Specifications | HDA 20 Specifications |
| Typical voltage | 27 VDC | 27 VDC |
| Nominal speed | 90 deg/sec | 90 deg/sec |
| Nominal Current | 1.7 A | 0.125 |
| Nominal Torque | 8 N.M | 20 N.M |
| No LOad Speed | 95 deg/sec | 120 deg/sec |
| Max Torque | 15 M.m | 35 M.m |
| Mechanical Backlash | less than 6 arcmin | less than 6 arcmin |
| Frequency Response | greater than 15 Hz | greater than 12 Hz |
| Weight | 0.9 | 1.4kg |
| Operating Temperature | -40 0C to +85 0C | -40 0C to +85 0C |
| Storage Temperature | -55 0C to +105 0C | -55 0C to +105 0C |
| Vibration | 20-2000 Hz , 6 g2rms , random | 20-2000 Hz , 6 g2rms , random |
| Dimensions | 105×60×55 mm | 105×60×55 mm |