Zero Backlash Rotary Actuator

New! FHA-C Series low-profile, hollow shaft, brushless servo actuators are now available in 4 new models with 5 reduction ratios that achieve high-precision rotary positioning. The new FHA-C-PR models round out the already successful brushless actuator line. We improved the one way and bi-directional positioning repeatability of the FHA-C series to offer an optimal solution for those applications that require increased accurate positioning. The FHA series is designed to operate with a wide range of third-party drivers, as well as Harmonic Drive LLC’s DDP Series, DEP Series, and RTL Series. Key Features: High torque Large center through hole Compact cylindrical design Availability of a series of multifunctional control units Known for its expert engineering and manufacturing, Harmonic Drive LLC products are relied upon every day throughout the motion control industry. About Harmonic Drive LLC Harmonic Drive LLC engineers and manufactures precision Harmonic Drive® servo actuators, gearheads and gear component sets. They work with industry-leading customers and companies of all sizes to provide both standard product and custom-engineered servo actuators, gearheads and gear components. Harmonic Drive LLC provides high precision, high performance solutions to meet customer’s mission critical application requirements. The majority of the products sold by HDLLC are proudly made at their US headquarters and manufacturing facility in Massachusetts. Harmonic Drive LLC is AS9100 and ISO 9001 registered. Affiliated companies in, Japan (Harmonic Drive Systems, Inc.) and Germany (Harmonic Drive SE) provide additional manufacturing capabilities. With over 50 years of experience, our expert engineering and production teams develop enabling technologies and products to meet the needs of an evolving motion control market. We are very proud of our outstanding company history. Our high-precision, zero-backlash Harmonic Drive® gears and Harmonic Planetary® gears have, and continue to play critical roles in robotics, spaceflight applications, semiconductor manufacturing equipment, factory automation equipment, medical diagnostics and surgical robotics. Harmonic Drive is a registered trademark of Harmonic Drive Systems.
Key Specifications
Variant configuration | FHA-C-PR current five-ratio menu; old announcement variation |
Applications and Industries
Semiconductor and electronics production equipment
Electronics and semiconductors; Medical and life sciences; Manufacturing
Review Summary
Consider FHA-C for an OEM rotary axis that benefits from a central passage and a matched motor/reducer assembly. Choose standard, PR or H by the actual winding, feedback, positioning duty and environment. Do not transfer H-series continuous torque, a PR repeatability figure or an optional IP65 rating to every FHA-C actuator.
Price and Configuration
Request a quote for the selected configuration,quantity and delivery schedule. Confirm the exact model,options,integration scope and support terms.



















