Planetary Gearboxes & Gear Reducers

OUBANG MOTOR specializes in manufacturing Precision Planetary Gearboxes & Gear Reducers in China, providing industry-leading solutions with high torque density and ultra-low backlash (Flange 60-220). Our robust selection includes the PL/PF (Economy) and KS/KE/KD/KB/KBR (Precision Helical) series, designed for smooth, quiet operation. With available reduction ratios from 3:1 to 512:1, our reducers are the ideal fit for Servo, Stepper, and AC motors in robotics, CNC machinery, and advanced automation systems.
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About Our Planetary Gear Reducers

OUBANG MOTOR specializes in precision planetary gear reducers and gearboxes for industrial automation. We offer two main product lines:

  • Economy spur gearboxes for cost-effective, high-value solutions with the best price-performance ratio.
  • Precision helical planetary gear reducers for demanding high-precision motion control applications.

Our core designs feature a compact size, high torque density, and industry-leading ultra-low backlash (as tight as 1.5 arc-min). With up to 97% efficiency per stage, our reducers provide outstanding performance across a wide range of applications. Available reduction ratios from 3:1 to 512:1 make our gear reducers ideal for use with servo, stepper, and AC induction motors in robotics, CNC machinery, and advanced automation systems.

Core Specifications

  • Flange sizes: 60 / 80 / 90 / 120 (economy spur); 60 / 80 / 90 / 120 / 150 / 180 / 220 (precision helical)
  • Ratios: 3:1 to 512:1 (single and two-stage configurations)
  • Backlash (typical): economy spur ~8–20 arc-min; precision helical ~1.5–10 arc-min
  • Efficiency: up to 95–97% per stage (helical line offers lower noise)
  • Mounting: ISO flange; ready for servo, stepper, and induction motor adapters
  • Output options: keyed or clamp shaft, solid or flange output
  • Construction: alloy steel, carburized & ground gears; rigid housing; lifetime lubrication

Why Choose Our Planetary Gear Reducers?

  • High Torque in a compact footprint thanks to multiple gear meshes.
  • High Precision / Low Backlash: Featuring backlash down to 1.5 arc-min for superior accuracy, accurate positioning, and repeatability, essential for CNC and robotics.
  • High Efficiency and long service life with hardened, ground gears.
  • Quiet Operation with helical gearing for noise-sensitive environments.

Typical Applications

  • Robotics and cobots, AGVs/AMRs
  • CNC machinery, machine tools, and indexing tables
  • Packaging, labeling, pick-and-place systems
  • Conveyors, material handling, and palletizing
  • Printing and textile equipment

Selecting the Right Gearbox

Choose economy spur when you need reliable torque at the best value. Choose precision helical when low noise, tighter backlash, and smooth motion are critical. Provide motor type, speed, required output torque, ratio, and mounting size—we’ll recommend the optimal match.

Contact Us

With more than 10 years of manufacturing experience, we provide OEM/ODM customization, fast delivery, and reliable technical support.
Contact us today to select the right planetary gearbox for your automation, robotics, or conveyor project.

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