JGA25-13CPR DC Geared Motor with Hall Encoder – 12V

The JGA25-13CPR motor is a compact 25 mm DC geared motor with an integrated Hall-effect encoder, designed for robotics, automation, and precision motion-control projects that require both drive power and position feedback. It operates from a 6–12V DC supply with a nominal voltage of 12V, delivering a no-load speed of 240–352 RPM and a working torque of approximately 0.85–1.2 kg·cm depending on the applied voltage. The gearbox is 25 mm in diameter, and the output shaft is 4 mm in diameter and 12 mm long with a D-shaped profile for secure coupling. The Hall encoder provides 26 pulses per revolution at the motor shaft, which, when combined with the 13:1 gear reduction, yields a substantially higher effective resolution at the output shaft for closed-loop speed and position control. The encoder is powered separately from the motor, and the wiring harness uses red and black leads for motor power, green and blue leads for encoder supply, and white and yellow leads for the A and B phase signals. Because the encoder output is a digital quadrature signal, it can be read directly by microcontrollers such as Arduino, STM32, and ESP32, or by dedicated motor driver and encoder interface boards. This JGA25 encoder motor is well suited to small mobile robots, educational platforms, robotic arms, automated guided vehicles, and any application where the motor must report its own rotation to the controller.

1. Small mobile robots and educational robotic platforms.
2. Robotic arms and precise motion-control mechanisms.
3. Automated guided vehicles (AGVs) and line-following robots.
4. Industrial automation equipment requiring speed and position feedback.
5. Small medical motion-control devices and laboratory instruments.
6. DIY motorized mechanisms, pan-tilt systems, and mechatronic projects.

1. Model: JGA25-13CPR (JGA25-DC family).
2. Motor type: brush DC motor with metal gearbox.
3. Operating voltage: 6–12V DC.
4. Nominal voltage: 12V DC.
5. No-load speed: 240–352 RPM (depending on voltage).
6. Working torque: approximately 0.85–1.2 kg·cm.
7. Gear ratio: 13:1 (13CPR designation).
8. Gearbox diameter: 25 mm.
9. Output shaft: 4 mm diameter, 12 mm length, D-shaped profile.
10. Encoder type: Hall-effect incremental encoder.
11. Encoder resolution: 26 pulses per revolution (PPR) at the motor shaft.
12. Encoder output: quadrature A/B phase digital signals.
13. Encoder supply: separate from motor power (3.3–5V class, per comparable units).
14. Wiring: red (+motor), black (−motor), green (−encoder), blue (+encoder), white (A phase), yellow (B phase).
15. Mounting: M3 threaded holes on the gearbox face (per comparable units).