GPL Robotic Planetary Gearbox
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.
benefits
- 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

Get CAD Models & Tech Specs with our Online Product Catalog
search our catalogUnique 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.
- Helical pinion and gear: high ratios and quiet operation
- Planetary spur: fixed ratio
- Conical spur: lifetime zero backlash
GPL Robotic Planetary Models
GPL-F

- Flange output
- Sizes 056 to 400
- Ratios 50:1 to 200:1
- Nominal Torque 445 to 3500 Nm
GPL-H

- Hollow Flange output
- Sizes 057 to 400
- Ratios 35.5:1 to 131.1:1
- Nominal Torque 445 to 3500 Nm
GPL Planetary vs. Cycloidal
INDUSTRY STANDARD: Cycloidal Gearbox | NEW STANDARD: GPL Robotic Planetary Gearbox |
60 arcsec backlash | 6 arcsec backlash - 10 times better backlash |
Vibration during motion | Vibration free-motion |
Adjustment required | Backlash maintained for rated life - no adjustment needed |
6,000 hours rated life | 20,000 hours rated life 3+ times better life |
Collaborate with GAM
We have the ability to customize & modify all our products. Our team of engineers will collaborate with you to produce your desired result.
PDF Resources
Related Products

GCL Robotic Cycloidal
Precise point-to-point motion with impact resistance 5x nominal torque
Learn More
GSL Robotic Strain Wave
Harmonic-type gearing for zero-backlash and high torque in a small, lightweight gearbox
Learn More
Rack and Pinion Systems
Precision helical rack & pinion, available alone or paired with GAM gearboxes for optimized linear solutions.
Learn More
SPH Inline Helical
Helical planetary gearing provides the highest precision for demanding applications
Learn More