What Is a Precision Planetary Gearbox?
A precision planetary gearbox is a gear reducer that uses a sun gear, multiple planet gears and an internal ring gear to transmit high torque in a compact coaxial design. The load is distributed across multiple planet gears simultaneously, enabling higher torque density, greater efficiency and longer service life than conventional single-gear reducers.

Why Choose GTIT Planetary Gearboxes?
Planetary gearboxes are GTIT’s core self-manufactured product line. Each unit — from gear cutting to housing machining, assembly and end-of-line testing — is produced entirely in-house. This vertical integration ensures consistent quality across every unit, whether you order 10 or 10,000.
Technical Parameters:
Output Torque: 0.5 – 95 kNm
Transmission Ratio: 3.43:1 – 8,900:1
Backlash: ≤ 1 arcmin (small-to-medium torque models)
Protection: IP65
Configurations: Single-stage · Double-stage · Custom ratios
Applications:
Robotics & Automation · Precision Reducers · Servo Drive Systems · Industrial Machinery · AGV & Mobile Robots · Injection Molding · Conveying & Packaging
FAQ:
Q: What is the backlash of your planetary gearboxes?
A: Small-to-medium torque models achieve ≤ 1 arcmin. Large-torque heavy-duty models have higher backlash; actual values depend on the selected ratio and torque rating — contact us for model-specific data.
Q: Can you customize the ratio and mounting interface?
A: Yes. Custom ratios, mounting flanges, output shafts and housing materials are available upon request.

