Harmonic Drive FHA-C Mini Rotary Actuators
Harmonic Drive FHA-C Mini Rotary Actuators
Harmonic Drive FHA-C Mini combines a strain-wave gear, brushless servo motor and output bearing in a compact rotary actuator. This review covers the externally driven FHA-8C, FHA-11C and FHA-14C family, distinguishing encoder and hollow-shaft choices from the separate integrated-drive version.
Review Summary
FHA-C Mini is a useful candidate for a compact geared rotary axis when the load fits the selected actuator's torque, bearing and speed limits. Select the full encoder, winding, ratio and drive combination. A high calculated encoder count does not replace positioning-accuracy data, and the hollow passage is configuration-dependent.
Sizes FHA-8C, FHA-11C and FHA-14C Reduction ratios 30:1, 50:1 or 100:1 Example maximum torque FHA-14C: 9, 18 or 28 Nm for ratios 30, 50 or 100 respectively; maximum, not continuous torque Example maximum speed 200, 120 or 60 rpm for ratios 30, 50 or 100 respectively; evaluate the actual operating curve Encoder selection Incremental, single absolute or dual absolute variants Hollow passage Manufacturer restricts the hollow-shaft feature to the incremental-encoder version Mechanical support Integrated cross-roller output bearing; permissible load depends on size/configuration Drive scope External matched servo drive required for the configuration reviewed; integrated-drive FHA Mini is a separate version Applications and Industries
Compact machine rotary axes and robotic mechanisms where a geared actuator's output bearing, torque-speed capability and selected feedback meet the load.
Industrial automation; robotics; precision machinery; electronics assembly
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| Sizes | FHA-8C, FHA-11C and FHA-14C |
| Reduction ratios | 30:1, 50:1 or 100:1 |
| Example maximum torque | FHA-14C: 9, 18 or 28 Nm for ratios 30, 50 or 100 respectively; maximum, not continuous torque |
| Example maximum speed | 200, 120 or 60 rpm for ratios 30, 50 or 100 respectively; evaluate the actual operating curve |
| Encoder selection | Incremental, single absolute or dual absolute variants |
| Hollow passage | Manufacturer restricts the hollow-shaft feature to the incremental-encoder version |
| Mechanical support | Integrated cross-roller output bearing; permissible load depends on size/configuration |
| Drive scope | External matched servo drive required for the configuration reviewed; integrated-drive FHA Mini is a separate version |
