Precision Planetary Gearbox

Our precision planetary gearbox uses ground helical gears and preloaded bearings to deliver ultra-low backlash (down to 1 arc-min), high torsional stiffness, and quiet operation. Flange sizes 60–220 with ratios 3:1 to 512:1—ideal for servo axes, robotics, and CNC automation, and widely used in high-precision automation applications worldwide.

Precision Planetary Gearbox — Low Backlash, Helical Gearing for Servo Motion

Engineered for high-accuracy positioning, this precision planetary gearbox couples ground helical gears with a rigid housing and preloaded output bearings. The result is low noise, excellent torsional stiffness, and consistent repeatability for demanding motion systems.

Why It’s Precise

  • Helical gear train (carburized, ground) for smooth, quiet meshing and higher torque density.
  • Low backlash classes: P0 ≈ ≤1.5 arc-min (selected sizes/ratios), P1 ≈ ≤3 arc-min.
  • Preloaded output bearings (taper/ACBB) to handle high radial and axial loads with minimal deflection.
  • High torsional rigidity to maintain path accuracy during rapid accel/decel.

Core Specifications

  • Flange sizes: 60 / 80 / 90 / 120 / 142 / 180 / 220
  • Ratios: 3:1 to 512:1 (single & multi-stage)
  • Efficiency: up to ~95% (1-stage), ~92% (2-stage)
  • Noise: low, helical gear design (application dependent)
  • Lubrication: lifetime synthetic grease; sealed housing
  • Output options: keyed or clamp solid shaft; square or round output flange
  • Protection: typically IP54 (consult model data)

Motor Compatibility

Universal ISO mounting with adapter plates for most servo and stepper brands (e.g., Yaskawa, Mitsubishi, Delta, Siemens, Beckhoff, etc.). Quick, drop-in replacement for inline servo gearheads.

Where It Excels

  • Robotics, cobots, AGV/AMR drivetrain and steering
  • CNC indexing, ball-screw drives, and tool changers
  • Pick-and-place gantries and high-speed packaging
  • Printing, converting, and precision winding

Selection Tips

Share motor model, input speed, required output torque, ratio, duty cycle, target backlash, and allowable overhung/axial loads. Our team will size a helical precision planetary gearbox with verified safety factors for both torque and bearing life.

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