Voltage: 12V
Reduction Ratio: 42
Motor Speed (Base Speed): 16000 RPM
No-Load Speed: 381 RPM
No-Load Current: 17 mA
Load Current: 85 mA
Load Speed: 333 RPM
Starting Voltage: 0.5 V
Stall Current: 252 mA
Stall Torque: 131.25 gf.cm
Rated Torque: 39 gf.cm
Power: 0.115 W
Mechanical Specifications (Common to All Variants)
Model: 1218-N20 Right Angle Worm Gear Motor
Motor Type: Brushed DC Permanent Magnet
Gear Structure: Worm Gear (Self-Locking)
Shaft Type: D Shape
Shaft Diameter: 3mm
Output Shaft Size: 3 × 8.3mm
Gearbox Dimensions: 18.1 × 12 × 10.2 mm
Motor Dimensions: 15 × 12 × 10.3 mm
Mounting Type: Flange Mount
Weight: 13–15g
Starting Voltage: 0.5V
Construction: Metal Gearbox
The 1218-N20 metal gear DC motor is engineered for applications that demand reliable torque output in a compact form factor. Built with a precision-machined gearbox and steel internal gears, this motor delivers smooth rotation, improved durability, and consistent performance even under continuous operation. The metal gear construction ensures superior load handling compared to plastic gear alternatives, making it suitable for demanding automation environments.
Designed with a right-angle worm gear structure, the motor provides stable low-speed control and enhanced torque multiplication. Its compact 12mm class gearbox allows easy integration into space-constrained designs without compromising power output. The D-shaped output shaft ensures secure coupling with wheels, pulleys, and mechanical linkages, reducing slippage and improving transmission efficiency.
With a low starting voltage of just 0.5V and multiple voltage options (3V / 6V / 12V), this motor offers flexibility for battery-powered systems and embedded electronics. The IP55-rated enclosed construction protects against dust and light moisture exposure, increasing operational reliability in real-world applications.
This motor is ideal for smart door locks, robotics projects, intelligent switch systems, mini actuators, automation modules, IoT motion control systems, and Arduino or ESP32-based development platforms. Whether used in prototyping or integrated into commercial products, it delivers dependable performance with long service life.
This compact high torque DC gear motor features a durable metal gearbox and worm gear reduction system, making it ideal for robotics, smart door lock systems, IoT automation, and Arduino-based motion control projects.