Precision 12mm N20 Micro Gear Motor with Encoder 3PPR & 9mm Spur Gearbox

Technical Specification
KC-GM12-N20-10138 Series
Precision 12mm Micro Gear Motor with Encoder — Optimized for stable integration and durable torque output
Motor Type
DC Micro Geared
Rated Voltage
3.7 V DC
Reduction Ratio
30:1 Spur
No-load Speed
500 rpm
Rated Torque
0.04 kg·cm
Encoder Resolution
3 PPR
✓ Custom samples: 10-20 days
✓ Bulk order pricing available
✓ ISO 9001, CE & RoHS Compliant
Applications: Smart electronic door locks, Medical infusion pumps, Optical pan-tilt camera heads, Micro robotic joints, Automated valve actuators, Laboratory pipette dispensers, Analytical testing instruments, Financial self-service kiosks.
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Micro Gear Motors Engineering Overview

Designed for high-precision industrial applications, our advanced micro gear motors and n20 micro gear motor configurations deliver optimized mechanical output and reliable torque transmission. Integrating robust spur gearbox architectures with high-efficiency direct current motor cores, these units support seamless integration into robotics, medical instrumentation, automated laboratory equipment, and optical instrumentation devices. For closed-loop feedback control requirements, variant assemblies compatible with a micro gear motor with encoder provide accurate rotational positioning and speed regulation.

Base Micro Motor Technical Specifications

Electrical and mechanical baseline parameters for KC-N20-10138 and KC-N20-05Z390 series core motors
Parameter Model KC-N20-10138 Model KC-N20-05Z390
Rated Voltage 3.7 V DC 6.0 V DC
No-load Speed 15000 rpm 7900 rpm
No-load Current 78 mA 30 mA
Maximum Efficiency Speed 12300 rpm 5700 rpm
Maximum Efficiency Torque 0.05 g·cm 0.04 g·cm
Maximum Efficiency Current 200 mA 75 mA
Output Power 0.74 W 0.45 W
Stall Torque 11.11 g·cm 7.18 g·cm
Stall Current 0.820 A 0.180 A

Gear Reduction Performance Parameters Table

Comprehensive output performance metrics across reduction ratios for KC-GM12-N20 series gear motors
Motor Model Gear Ratio Stage Length No-load Speed Rated Speed Rated Torque Stall Torque
KC-GM12-N20-10138 30:1 1 9 mm 500 rpm 410 rpm 0.04 kg·cm 0.23 kg·cm
KC-GM12-N20-10138 50:1 1 9 mm 300 rpm 246 rpm 0.06 kg·cm 0.33 kg·cm
KC-GM12-N20-10138 100:1 1 9 mm 150 rpm 123 rpm 0.12 kg·cm 0.67 kg·cm
KC-GM12-N20-10138 150:1 1 9 mm 100 rpm 82 rpm 0.15 kg·cm 0.83 kg·cm
KC-GM12-N20-10138 210:1 1 9 mm 71 rpm 59 rpm 0.21 kg·cm 1.17 kg·cm
KC-GM12-N20-10138 250:1 1 9 mm 60 rpm 49 rpm 0.25 kg·cm 1.39 kg·cm
KC-GM12-N20-10138 298:1 1 9 mm 50 rpm 41 rpm 0.30 kg·cm 1.66 kg·cm
KC-GM12-N20-10138 330:1 1 9 mm 45 rpm 37 rpm 0.33 kg·cm 1.83 kg·cm
KC-GM12-N20-10138 380:1 1 9 mm 39 rpm 32 rpm 0.38 kg·cm 2.11 kg·cm
KC-GM12-N20-05Z390 30:1 1 9 mm 263 rpm 190 rpm 0.04 kg·cm 0.15 kg·cm
KC-GM12-N20-05Z390 50:1 1 9 mm 158 rpm 114 rpm 0.06 kg·cm 0.22 kg·cm
KC-GM12-N20-05Z390 100:1 1 9 mm 79 rpm 57 rpm 0.12 kg·cm 0.43 kg·cm
KC-GM12-N20-05Z390 150:1 1 9 mm 53 rpm 38 rpm 0.15 kg·cm 0.54 kg·cm
KC-GM12-N20-05Z390 210:1 1 9 mm 38 rpm 27 rpm 0.21 kg·cm 0.75 kg·cm
KC-GM12-N20-05Z390 250:1 1 9 mm 32 rpm 23 rpm 0.25 kg·cm 0.90 kg·cm
KC-GM12-N20-05Z390 298:1 1 9 mm 27 rpm 19 rpm 0.30 kg·cm 1.07 kg·cm
KC-GM12-N20-05Z390 330:1 1 9 mm 24 rpm 17 rpm 0.33 kg·cm 1.19 kg·cm
KC-GM12-N20-05Z390 380:1 1 9 mm 21 rpm 15 rpm 0.38 kg·cm 1.36 kg·cm

Mechanical Drawing and Dimensional Specifications

Technical outline dimensions and mounting geometry for integration analysis

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

KC-GM12-N20 Series Micro Gear Motor Outline Dimensions Specification

Performance Advantages

  • Optimized torque delivery: Extended reduction ratios from 30:1 to 380:1 provide robust stall torque up to 2.11 kg·cm for demanding loads
  • Precise rotational control: High-efficiency no-load and rated speed configurations ensure accurate actuation across varied operational cycles
  • Durable structural integration: Compact miniature footprint paired with standardized M1.6 mounting interfaces facilitates seamless mechanical integration
  • Compatible encoder integration: Optional encoder configurations support closed-loop velocity tracking and precise position feedback
  • Engineered reliability: Rigorous manufacturing tolerances ensure consistent performance and stable operating longevity in continuous industrial environments
Key Search Terms
micro gear motors | n20 micro gear motor | micro gear motor with encoder | KC-GM12-N20 gear motor | 3.7 V DC micro motor | 6.0 V DC gear motor | miniature spur gearbox motor | industrial precision micro motor

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