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The New Standard in High Precision Gearboxes

GPL Zero-Backlash Robotic Planetary Gearboxes

GAM’s revolutionary GPL Series Robotic Planetary Gearbox combines the lowest backlash and high tilting rigidity with vibration-free motion for smooth, controlled motion in robotics and motion control applications.

  • Backlash ≤ 0.1 arcmin (6 arcsec), 10x better than other precision gearboxes
  • Best-in-the-market torsional rigidity for ≤ 0.6 arcmin lost motion
  • Operates vibration-free for superior positional accuracy and continuous controlled throughout the motion
  • No adjustment required:Patented design guarantees backlash will not increase over the life time of the gearbox
  • Operating life of 20,000 hours
  • Industry-accepted proven performance
  • Integrated motor adapter ready to mount your motor
  • Replaces direct drive motors at significant cost savings
  • Exceed the performance of a cycloidal gearbox in almost every application
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Unique Gearing for Lifetime Precision

The GPL employs a unique gearing arrangement to maintain zero-backlash for the operation life of the gearbox as shown in this video.

  1. Helical pinion and gear: high ratios and quiet operation
  2. Planetary spur: fixed ratio
  3. Conical spur: lifetime zero backlash

GPL Robotic Planetary Gearbox

GPL Planetary vs. Cycloidal

The GPL robotic planetary gearbox provides superior performance compared to a cycloidal gearbox.

FeatureGPL Robotic Planetary Gearbox
THE NEW STANDARD: GPL Planetary Gearbox
Cycloidal Gearbox
Cycloidal Gearbox
Backlash<0.1 arcmin for the life of the gearbox<1 arcmin - backlash increases with wear
Path ControlBalanced planetary gearing for smooth controlled path without vibrationUnbalanced gearing results in vibration during movement
Service Life20,000 hours rated life6,000 hours rated life
TorqueRated torque at output speed (n2) of 15 rpmRated torque at slower output speed of 5 rpm
Efficiency>90% independent of speed>85%
Duty CycleS1 duty cycle (continuous operation) is possible.
High input speeds up to 6600 rpm
Lower input speeds
PrestageStandard optionNot standard
Shock Load3.3x nominal torque5x nominal torque

GPL Robotic Planetary Models

Application Stories

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