12V 30 RPM Johnson Geared DC Motor – Grade B

The 12V 30 RPM Johnson Geared DC Motor is a high-torque, low-speed motor that delivers consistent and reliable performance for a variety of mechanical and robotics projects. Its integrated gearbox is the key to its power, converting the high speed of the internal DC motor into a much lower output speed with significantly increased torque. This makes the motor ideal for applications where you need to lift, push, or move heavy loads precisely. Engineers, students, and DIY enthusiasts commonly use this motor for everything from robotic arms to automated systems, relying on its robust construction and dependable operation.

Key Features:

• High Torque Output: The internal gearbox provides a high gear ratio, which multiplies the torque and enables the motor to handle heavy loads with ease.
• Low Rotational Speed: With a stable output of 30 RPM, this motor offers precise control for applications that require slow and steady movement.
• Durable Construction: Built with a rugged metal gearbox, it withstands mechanical stress and provides a long operational life.
• Versatile Power: Operates efficiently at a standard 12V DC, making it compatible with a wide range of power supplies, batteries, and motor drivers.
• Easy to Mount: The motor body includes mounting holes, allowing for a secure and straightforward installation into your projects.
• Dual-Shaft Output: Some versions may feature a dual-shaft design, providing flexibility for connecting multiple components or an encoder for position feedback.

Technical Specifications:

• Operating Voltage: 12V DC (Nominal)
• No-Load Speed: 30 RPM ±10%
• No-Load Current: ≤150 mA
• Rated Torque: Varies depending on gear ratio (check specific model)
• Stall Torque: Up to 12 Kg-cm
• Stall Current: ≤2.5 A
• Gearbox: All-metal spur gear reduction

Mechanical Specifications:

• Motor Type: DC Geared Motor
• Shaft Diameter: 6 mm (D-Cut)
• Shaft Length: ~25 mm
• Mounting: Two screw holes on the front faceplate.
• Housing: Metal casing with a plastic end cap.

Dimensions:

• Body Length (Motor + Gearbox): ~65 mm
• Body Diameter: ~37 mm
• Total Length (with Shaft): ~90 mm

Pinout and Wiring:

• Terminals: Two solder terminals or connecting wires (typically red and black).
• Wiring Note: Connect the positive terminal of your 12V power supply to one motor terminal and the negative to the other. To reverse the motor’s direction, simply swap the polarity. Use a motor driver to control speed and direction with a microcontroller.

Datasheet Reference:

• Download Datasheet

Commonly Used in:

• Robotics: Powering drive wheels, robotic arms, and grippers.
• Industrial Automation: Used in conveyors, small machinery, and automated locking mechanisms.
• Educational Projects: A staple for school projects involving mechanical systems, such as miniature cars or elevators.

Applications:

• Pan and Tilt Systems: Provides the smooth, controlled movement needed for cameras and sensors.
• Linear Actuators: Convert rotational motion to linear motion for lifting or pushing tasks.
• Automated Blinds and Curtains: Operate slow-moving, high-torque mechanisms for smart home devices.

Equivalent Models:

• BO Motor: A smaller, lighter-duty geared motor often used in hobbyist projects with less torque requirement.
• High-Torque Servos: While similar in function, servos offer precise angular control but are often more complex to program.

Package Includes:

• 1 x 12V 30 RPM Johnson Geared DC Motor