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Member Since 2014


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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New Face-Mount Planetary Gearheads from Harmonic Drive LLC

POSTED 06/18/2019

HPN-L Planetary Gears offer affordable pricing with short lead times

Harmonic Drive LLC, a leader in high precision motion control introduces the HPN-L Harmonic Planetary® Gearheads.  HPN-L face-mount helical planetary gearheads for servo grade performance deliver affordable precision.

HPN Planetary gearheads feature a robust design utilizing helical gears for quiet performance and long life. These gearheads are available with short lead times and are designed to couple to any servo motor with our Quick-Connect coupling. This new face-mount value series of planetary gears carry the reputation for quality and reliability for which Harmonic Drive® products are known throughout the world. HPN gearheads are suitable for use in a wide range of applications for precision motion control and positioning. HPN-L Harmonic Planetary® gears are available in 3 frame sizes: 14, 20, and 32, with reduction ratios ranging from 3:1 to 50:1.

HPN-L Key Features :

  • Peak Torque 18 N.m to 300 N.m
  • Robust design
  • High precision
  • Backlash <5 arc-min (One stage) , < 7 arc-min (Two stage)
  • Quick-Connect design for easy mounting to a wide variety of servomotors
  • Reduction ratio 3:1 – 10:1 (One stage), 15:1-50:1 (Two stage)  
  • Helical gears for quiet performance
  • Quick delivery
  • Drop in replacement for popular industry dimensions

Known for its expert engineering and manufacturing, Harmonic Drive LLC products are relied upon every day throughout the motion control industry. The majority of the products sold by HDLLC are proudly made at their US headquarters and manufacturing facility in Massachusetts.