Ultra Compact Products
Harmonic Drive® miniature speed reducers offer zero backlash and high torque in a small package. With outline dimensions starting at just under 13mm, these gearheads are commonly used in robotics and semiconductor equipment. Miniature gearheads are also available with precision matched motors and encoders. Complete mini and supermini actuators are available in 3 ratios, and multiple configurations. When space is tight and precision can't be compromised, mini gearheads and actuators from Harmonic Drive provide dependable, easy-to-use, cost effective solutions.
Miniature Gearheads Back to top
CSF mini gearheads provide high positioning accuracy in a super-compact package. Compact 4-point contact ball bearing is mounted in the main shaft. Available in five sizes and four ratios, the CSF mini gearheads feature shaft or flange outputs.

CSF-2XH
Designed to be coupled directly to a servomotor, the motor shaft is attached directly to the gearhead input element. Available with flange output or shaft output.

CSF-1U-CC
Featuring a shaft output, this gearhead is designed to be coupled directly to a high performance small servomotor.

CSF-1U-CC-F
Featuring a flange output, this gearhead is designed to be coupled directly to a high performance small servomotor.

CSF-1U-F
CSF Mini Gearheads provide high positioning accuracy in a very compact package. Compact 4-point contact ball bearing mounted in main shaft.

CSF-2UH-ULW
New gear units from Harmonic Drive achieve unprecedented low weight in an ultra-flat housing.
Miniature Actuators Back to top
We offer a full line of DC, AC and brushless actuators.

RSF-5B IDT Supermini Actuator
Supermini actuator with an integrated servo drive utilizing CANopen® communication. Features a single cable connection with only 4 conductors needed: CANH, CANL, +24VDC, 0VDC.

RSA-8A IDT Integrated Drive
Mini actuator with an integrated servo drive utilizing CANopen® communication. Features a single cable connection with only 4 conductors needed: CANH, CANL, +24VDC, 0VDC.

FHA-Mini Integrated Drive
Mini actuator with an integrated servo drive utilizing CANopen® communication. Features a single cable connection with only 4 wires needed: CANH, CANL, +24VDC, 0VDC.

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.

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.

FHA-Mini Dual Absolute
Introducing new options for FHA-C mini (24VDC): DUAL Absolute Encoders and Panel Mount Connectors. Extremely small actuators deliver high torque with exceptional accuracy and repeatability. Peak torque 1.8~28 Nm, max speed 60~200 rpm.

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.