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Harmonic Drive, LLC engineers and manufactures precision servo actuators, gearheads and gear component sets. We work closely with Fortune 500, start-ups and companies of all sizes to understand their application requirements and provide a standard or, in most cases, a custom-engineered solution to enable the success of their design project. Since the beginning, our engineering and production teams have continued to develop enabling technologies and products for the evolving motion control market. For over 50 years, Harmonic Drive has been you’re your partner for precision motion control. Today, high precision Harmonic Drive® strain wave gears continue to be engineered and manufactured by Harmonic Drive LLC in the US, Harmonic Drive SE in Germany and Harmonic Drive Systems, Inc. in Japan. With shared values, designs and quality standards, we locally serve the needs of our global customers. Harmonic Drive is a registered trademark of Harmonic Drive Systems. ISO9001 & AS9100 registered.

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Ultra-lightweight Gearhead from Harmonic Drive

POSTED 08/28/2020

Ultra-Lightweight Gear Units from Harmonic Drive LLC

New gear units boast ultra-thin profile and extreme lightweight.

Harmonic Drive LLC, a leader in high precision motion control introduces two new ultra-lightweight gearheads. The two models, 8 and 11, are the smallest and the first to be released in the CSF-ULW series. 

This series features a newly engineered lightweight structure with an ultra-compact shape. The ULW line maintains the same performance standards as the CSF-2UH series. Ideal for use on end of arm axes for small industrial and collaborative robots, the CSF-ULW is also well suited for general industrial machinery where weight is a critical factor. CSF-ULW gears are available with 3 reduction ratios; 30:1, 50:1 and 100:1.


  • Zero backlash
  • High accuracy
  • Ultra-lightweight
  • Super flat configuration, 19mm (size 8); 21.5mm (size 11)
  • Outer diameter: φ 42.5mm (size 8); 50.5mm (size 11)
  • Reduction Ratios 30:1~100:1

Known for its expert engineering and high-precision 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. More information can be found by visiting the company’s website.

Harmonic Drive is a registered trademark of Harmonic Drive Systems.