Harmonic Drive LLC Product

Rack and Pinion with Gearhead

Model: RK HPG

Harmonic Drive LLC

Image of Rack and Pinion with Gearhead

High accuracy helical rack and pinion sets are designed for high positioning accuracy and low noise. By having complete control over the design of the system, Harmonic Drive delivers max power density with high linear stiffness and high precision. The RK systems from Harmonic Drive are ideal for CNC machining centers, metal cutting machines, laser machines and high-precision milling machines. HPG Harmonic Planetary® gears with rack & pinion are available now. This new rack and pinion system carries the reputation for quality and reliability for which Harmonic Drive® products are known throughout the world.

HPG - RK Key Features:

  • High precision (accuracy class DIN 6)
  • Backlash <3 arc-min or optional 1
  • Runout accuracy of the pinion gear installed on the gearhead is 15μm or less
  • Low noise and vibration
  • Rack: Induction hardened and ground
  • Pinion: carburized and ground
  • Quick-Connect design gearhead

Quick Specs

Helix angle: 19.5283°
Rack: Induction hardened and ground
  Module 2 - Length: 500 mm, 1000 mm
  Module 3 - Length: 500 mm, 1000 mm
Pinion: Carburized and ground
  Module 2 Number of teeth 35, 40, 45
  Module 3 Number of teeth 31, 35, 40


Known for its expert engineering and manufacturing, Harmonic Drive LLC products are relied upon every day throughout the motion control industry.


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