Harmonic Drive LLC | 247 Lynnfield St. Peabody, MA 01960 | 800-921-3332
Harmonic Drive and Harmonic Planetary are registered trademarks of Harmonic Drive LLC.


Rotary Actuators

Harmonic Drive® rotary actuators deliver both high force and outstanding positional accuracy. Harmonic Drive manufactures our own cross roller bearings, harmonic and planetary gearing, state of the art brushless servo motors and encoders. By having complete control over the design of these critical elements, we have designed the performance matched components needed to develop extremely compact actuators with the highest power density while incorporating unique features such as a hollow shaft. Performance matched precision gearing, motors, and encoders are designed to provide a power dense, cost effective solution.

The availability of these complete servo actuators eliminate the need for machine designers to individually select a motor and gearhead as well as the effort needed to characterize its expected performance. Our highly reliable and performance tested servo actuators and Servo Drives are the fastest means to get your machine design up and running.

We offer both conventional shaft and hollow shaft rotary actuators in many sizes with gear ratios ranging from 11:1 to 161:1.

Hollow Shaft Actuators Solid Shaft Actuators

These brushless actuators feature a large hole through that allows wires, tubing, laser beams or other components to pass directly through the axis of rotation.

FHA-Mini

FHA-Mini

Extremely small Hollow Shaft Actuators that deliver high torque with exceptional accuracy and repeatability. Peak torque 1.8~28 Nm, max speed 60~200 rpm.

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FHA-C

FHA-C

Super-flat hollow shaft actuators with high torque, high positioning accuracy and high torsional stiffness. Peak torque 39~820 Nm, max speed 22~96 rpm.

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FHA-C PR

FHA-C PR

Hollow shaft actuators available in 4 sizes with 3 reduction ratios. FHA-C-PR offers high-precision rotary positioning with improved one-way and bi-directional repeatability.

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FHA-C H

FHA-C H

FHA-C Series servo actuators are now available with IP65 protection. Four sizes are available: 17, 25, 32 and 40. The new IP65 rated version of our FHA-C actuator is ideal for harsh environments.

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SHA-SG

SHA-SG

Hollow shaft actuator with a compact outer diameter and exceptional torque/volume ratio. Peak torque 73~3419 Nm, Max speed 17.4~117.6.

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SHA-CG

SHA-CG

Hollow shaft actuator with direct drive motor performance with 80-90% less weight. Peak torque 23~3419 Nm, max speed 25~120 rpm.

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We offer a full line of DC, AC and brushless solid shaft actuators.

RSF-Supermini

RSF-Supermini

Small enough to fit inside the finger of a robotic hand, these servo actuators operate with a wide range of drivers. Peak torque .13~1.4 Nm, max speed 100~333 rpm.

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RSF-Mini

RSF-Mini

Available in 3 sizes, these brushless servo actuators deliver exceptional positioning accuracy in a compact package. Peak torque 1.8~28 Nm, max speed 60~200 rpm.

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RSF

RSF

Available in 4 sizes, these brushless servo actuators deliver exceptional positioning accuracy in a compact package. Peak torque 34~330 Nm, max speed 45~90 rpm.

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RH-Mini

RH-Mini

DC servo actuator with incremental encoder. Peak torque .39~20 Nm, max speed 50~180 rpm.

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RKF

RKF

High torque AC servo actuator with output flange. Peak torque 56~330 Nm, max speed 45~90 rpm.

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Hours 8:00am - 5:00pm EST
Monday through Friday