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New Ultra-Lightweight Gearheads with Ultra-Compact Shape

Press Release Summary:

  • Available in three new models 14, 17 and 20 with 50% lighter than standard versions
  • Features zero backlash, high accuracy and lightweight structure
  • Ideal for use on the end of arm axes for small industrial, collaborative robot and general industrial machinery

Original Press Release:

Ultra-Lightweight Gear Units from Harmonic Drive LLC

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

Beverly, MA, August 10, 2021, -- Harmonic Drive LLC, a leader in high precision motion control adds three sizes to its new ultralightweight series gearheads. The three new models, 14, 17 and 20, are 50% lighter than the standard versions. The new gear units will be on display at the ATX show in Anaheim, August 10-12.

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 CSFULW is also well suited for general industrial machinery where weight is a critical factor. CSF-ULW gears are available five sizes and six reduction ratios.


  • Zero backlash
  • High accuracy
  • Ultra-lightweight, mass: .09kg ~ .45kg
  • Super flat configuration, 19mm ~ 31.5mm
  • Outer diameter: φ 54mm (size 8) ~ 93mm (size 20)
  • Reduction Ratios 30:1~160:1
  • Available in 5 sizes

Known for its expert engineering and high-precision manufacturing, Harmonic Drive LLC products are relied upon every day for precision motion control.

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 at

Harmonic Drive is a registered trademark of Harmonic Drive Systems.

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