12mm N20 Gear Motor with Planetary Gearbox 2.4V 5V 6V 12V KC-GMP12-N20

Technical Specification
KC-GMP12-N20 Series
Micro Planetary Gear Motor — Engineered for precise integration and durable torque transmission
Motor Type
N20 Brushed DC
Gearbox Type
Planetary Reduction
Rated Voltage
2.4V / 5.0V / 12.0V DC
Output Speed
10 – 925 RPM
Max Rated Torque
Up to 1.0 kgf·cm
Shaft Specification
3mm D-Shaft / Round
✓ Custom samples: 10-20 days
✓ Bulk order pricing available
✓ ISO 9001, CE & RoHS Compliant
Applications: Precision electronic door locks, Automatic valve actuators, Smart electric screwdrivers, Portable medical infusion pumps, Miniature pan-tilt camera drives, Robotic gripper finger joints, Optical lens zooming mechanisms, Automated desktop barcode scanners.
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KC-GMP12-N20 Micro Planetary Gear Motor Technical Specifications

The KC-GMP12-N20 series combines an optimized DC micro motor with a high-precision micro planetary gearbox to deliver precise rotational speed and torque output. Engineered for B2B industrial applications, medical equipment drives, smart lock mechanisms, and automated equipment, this n20 gear motor structure provides high power density within a 12 mm outer diameter frame. The integrated n20 motor gearbox assembly is available in customized voltage configurations of 2.4 V DC, 5.0 V DC, and 12.0 V DC to match specific circuit drive requirements.

General and Electrical Motor Specifications

Parameter Name Model KC-GPM12-N20-2.4 Model KC-GPM12-N20-5.0
Rated Voltage 2.4 V DC 5.0 V DC
Motor No-Load Speed 14 800 rpm 14 800 rpm
Motor No-Load Current 60 mA 30 mA
Motor Rated Speed 12 100 rpm 12 000 rpm
Motor Rated Torque 2.5 g·cm 2.5 g·cm
Motor Rated Current 260 mA 120 mA
Output Power 0.31 W 0.31 W
Motor Stall Torque 14 g·cm 13 g·cm
Motor Stall Current 1.2 A 0.52 A
Gearbox Type Planetary gear structure
Gear Material Construction All hardened steel / powder metallurgy
Outer Diameter Size 12 mm
Output Shaft Configuration 3 mm D-shaft / round shaft (customizable length)
Operating Acoustic Noise ≤ 45 dB
Encoder Option Integrations 3 ppr / 7 ppr / 12 ppr magnetic encoders
Total Mass Weight Range 15 g – 18 g

Planetary Gearbox Reduction Ratio and Output Specifications

Detailed reduction gear parameters for KC-GPM12-N20-2.4 and KC-GPM12-N20-5.0 miniature gear motor configurations.

Reduction Ratio Gearbox Length No-Load Speed Rated Speed Rated Torque (2.4 V) Rated Torque (5.0 V)
16:1 16.7 mm 925 rpm 786 rpm 0.03 kg·cm 0.04 kg·cm
24:1 16.7 mm 616 rpm 524 rpm 0.06 kg·cm 0.06 kg·cm
64:1 20.3 mm 231 rpm 196 rpm 0.16 kg·cm 0.16 kg·cm
96:1 20.3 mm 154 rpm 131 rpm 0.24 kg·cm 0.24 kg·cm
144:1 20.3 mm 102 rpm 87 rpm 0.36 kg·cm 0.36 kg·cm
256:1 23.9 mm 57 rpm 49 rpm 0.64 kg·cm 0.64 kg·cm
384:1 23.9 mm 38 rpm 32 rpm 0.96 kg·cm 0.96 kg·cm
576:1 23.9 mm 25 rpm 22 rpm 1.0 kg·cm 1.0 kg·cm
864:1 23.9 mm 17 rpm 14 rpm 1.0 kg·cm 1.0 kg·cm

Mechanical Drawing and Integration Dimensions

Dimensional specifications for system integration | All parameters in millimeters

Kechen Motor KC-GM12-N20 micro gear motor Technical 2D Drawing showing M1.6 x P0.35 mounting holes and 3mm shaft.

KC-GMP12-N20 Series Micro Planetary Gear Motor – Mechanical Drawing Reference

Performance Advantages

  • Optimized power-to-size ratio: Integrates a high-density miniature gear motor drive with a 12 mm cylindrical frame to maximize output torque in restricted installation spaces.
  • High-precision planetary gear design: The micro planetary gearbox features hardened steel and powder metallurgy components to deliver smooth torque transfer up to 1.5 kg·cm with minimal backlash.
  • Low acoustic footprint: Precision gear meshing and balanced internal motor mechanics limit operational sound emission to ≤ 45 dB for noise-sensitive medical and indoor devices.
  • Versatile drive options: Supported by multiple reduction stages from 16:1 to 864:1, offering customizable speed control from 14 rpm to 925 rpm under rated loads.
  • Flexible electrical compatibility: Available in standard 2.4 V DC, 5.0 V DC, and 12.0 V DC ratings to ensure efficient driver circuit matching.
  • Customizable mechanical interface: Shaft configurations can be tailored to D-shaft or round shaft designs, with optional magnetic encoder feedback (3 ppr, 7 ppr, or 12 ppr) for close-loop control systems.

Key Search Terms

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