DC Gear Motor (3.5 RPM)

WORKING PRINCIPLE: The 3.5 RPM DC Geared Motor is a simple DC motor combined with a gear reduction mechanism that converts electrical energy into slow, high-torque rotational motion. When DC voltage is applied, current flows through the motor windings, generating a magnetic field that causes the rotor to rotate. The attached metal gear system significantly reduces the motor’s speed to approximately 3.5 RPM while increasing torque. The sealed gearbox, lubricated with lithium grease, ensures smooth operation with minimal wear and no maintenance.
MODULE STRUCTURE: The motor consists of a standard DC motor integrated with a robust gearbox containing metal gears for improved durability and load handling. The gearbox is centrally aligned, with the shaft extending through the center, making it a center shaft DC geared motor. The shaft includes a threaded hole for secure coupling with wheels or mechanical components. The structure is compact, sturdy, and suitable for heavy-duty and continuous operation.
PIN CONFIGURATION: The motor has two electrical terminals: Positive (+) – Connect to the positive terminal of the DC power supply, Negative (−) – Connect to the ground or negative terminal of the power supply. Reversing the polarity changes the direction of rotation.
INTERFACE CONNECTION: The motor operates on a 12V DC supply and can run within a range of approximately 4V to 12V. It is typically interfaced with motor driver modules such as L298N H-bridge drivers when controlled using microcontrollers like Arduino. The driver enables direction control and safe power handling.
OUTPUT FUNCTION: The motor provides a very low output speed of approximately 3.5 RPM with high torque (around 15.7 kg-cm), making it ideal for applications requiring slow, powerful, and controlled movement. The shaft design allows easy mechanical coupling for efficient power transmission.
OPERATING VOLTAGE: 4V – 12V DC (Nominal: 12V)
SIGNAL CONDITIONING: Speed and direction control can be achieved using PWM signals through an H-bridge motor driver circuit. This allows controlled variation in speed and directional movement for automation and robotic applications.
CHARACTERISTICS: Motor Type: DC Geared Motor, Rated Speed: 3.5 RPM, Rated Voltage: 12V DC, Torque: 15.7 kg-cm, No Load Current: 70 mA (max), Shaft Diameter: 6 mm, Gear Type: Metal Gearbox, Structure: Center Shaft with Threaded Hole, Lubrication: Lithium Grease (Maintenance-Free), Smooth Operation, High Torque Output, Durable Construction
APPLICATION SCOPE: Robotics and industrial applications such as all-terrain robots, automated systems, windmill projects, conveyor mechanisms, toy cars, and basic electronics projects where very low speed and high torque are required for efficient operation.