New HPN-L Harmonic Planetary Gearheads is Designed to Pair with Any Servo Motor

Press Release Summary:

  • Features are peak torque 18 Nm to 300 Nm and reduction ratios form 3:1 to 50:1
  • Suitable for use in precision motion control and positioning
  • Available in 14, 20, and 32 frame sizes

Original Press Release:

New Face-Mount Planetary Gearheads from Harmonic Drive LLC

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 facemount 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 facemount 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.

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. Affiliated companies in, Japan (Harmonic Drive Systems, Inc.) and Germany (Harmonic Drive AG) provide additional manufacturing capabilities. More information can be found by visiting the company’s web site at

Harmonic Drive LLC Contact:

Colleen Anderson, Marketing Manager / / 978-573-3427

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