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20mm Planetary Gearbox & Reducer

This 20mm planetary gearbox is designed for compact drive systems that require higher torque output and stable transmission across a wide range of reduction ratios.

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  • 20mm Planetary Gearbox & Reducer Featured Image
Specs

Key Features

This planetary gearbox combines a precision-machined structure with multi-stage reduction to support torque-focused compact applications.

  • 20mm planetary gearbox for higher torque density
  • Multi-stage configuration covering low to high reduction ratios
  • Precision-machined planetary gear structure
  • Stable output performance under continuous load
  • Customizable output shaft for different coupling needs
technical Specs

Motors Specifications

No. Reduction Ratio Actual Ratio Stage Length L (mm) Efficiency (%) Motor Gear Teeth Motor Gear ID (mm) Rated Torque (g-cm) Allowable Instant Torque (g-cm)
1 4 4.333 1 17.9 90 12 Φ2.0 3000 4000
2 5 4.636 11
3 15 14.876 2 23.2 80 14 4000 5000
4 17 16.712 12
5 18 17.881 11
6 19 18.775 12
7 20 20.088 11
8 21 21.492 11
9 57 57.378 3 28.5 70 14 6000 8000
10 64 64.46 12
11 69 68.967 11
12 72 72.415 12
13 77 77.479 11
14 81 81.352 12
15 83 82.897 11
16 87 87.04 11
17 93 93.127 11
18 100 99.639 11
19 221 221.309 4 33.8 60 14 8000 10000
20 %3
Why Choose us

SLW Motor Highlights

  • Φ2.0mm Micro Output Shaft

    The Φ2.0mm output shaft interface is optimized for compact couplings and micro drive mechanisms where installation space and alignment accuracy are critical.

  • Stage-Based Ratio Selection

    Reduction ratios are grouped by stage configuration so engineers can quickly select the correct transmission class based on torque demand and system speed requirements.

  • High-Speed Motor Compatibility

    Selected ratio groups support input speeds up to 4000–10000 rpm, enabling stable operation with high-speed DC motors and compact servo drives.

  • Compact Precision Transmission

    The gearbox structure maintains a small mechanical envelope while supporting multiple reduction classes, making it suitable for miniature automation systems and precision positioning equipment.

Custom

Beyond the Standard: Performance Customized

  • 01
    Adaptive Wiring & Lead Routing
    Lead routing can be configured to match tight mechanical layouts and miniature housings, keeping wiring clear from rotating parts and reducing assembly complexity.
  • 02
    Customized Output Shaft Interface
    Output shaft geometry can be customized for miniature couplings, precision gears, or direct-drive mechanisms, ensuring consistent torque transfer and alignment.
  • 03
    Installation Orientation Optimization
    Provide installation orientation and load direction so the gear stage configuration can maintain stable performance under both radial and axial loads.
  • 04
    Control System Synchronization
    Gear ratio selection can be matched with your motor control parameters to smooth acceleration response and prevent excessive torque peaks during operation.
  • 05
    Application-Specific Configuration
    Share information such as load inertia, operating speed, duty cycle, and positioning accuracy to ensure the gearbox ratio and output structure match your system design.
  • Adaptive Wiring & Lead Routing
  • Customized Output Shaft Interface
  • Installation Orientation Optimization
  • Control System Synchronization
  • Application-Specific Configuration

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FAQ

Frequently Asked Questions

Higher stage counts are typically selected to reach higher ratios and torque margin within the same gearbox diameter.

How do I choose the gearbox stage level?
Stage selection depends mainly on the required reduction ratio and torque demand. Lower stage counts are suitable for moderate reduction, while higher stage counts are selected when larger reduction ratios are needed.
Which ratios are best for moderate reduction needs?
Ratios between 15:1 and 80:1 are commonly selected for applications that require balanced speed reduction and response performance.
When should I select ratios above 200:1?
Ratios above 200:1 are typically used in positioning systems or mechanisms where high torque and very low output speed are required.
What is the advantage of high input speed capability?
Supporting higher input speeds allows the gearbox to pair with high-speed motors while maintaining stable output torque and efficiency.
What information is required for customization?
For customized configurations, provide motor speed, load torque, mounting orientation, shaft interface requirements, and available installation space.
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