Product Description (Detailed):
Elevate your robotics and automation projects with the Johnson Geared Motor 30 RPM 12V (Grade-B), a robust and economical solution engineered for demanding applications. This high torque DC gear motor delivers a steady 30 revolutions per minute (RPM) at its nominal 12-volt DC operating voltage, making it ideal for mobile robots, robotic arms, and automated mechanisms requiring controlled, slow-speed, high-force movements. The integrated metal gearbox significantly amplifies the motor's output torque, transforming the high speed of the base DC motor into a powerful, low-speed rotation, crucial for driving heavy loads or overcoming friction in mechanical systems. While designated "Grade-B," this motor still offers excellent performance and durability for a wide range of hobbyist and educational robotics applications, providing a cost-effective alternative without compromising on essential functionality. Its design often includes a robust shaft with metal bushes for enhanced wear resistance and multiple M3 mounting holes for easy integration. Whether you're building an all-terrain robot, a pan/tilt camera system, or an automated dispensing unit, this geared motor ensures reliable and consistent motion control, proving to be an indispensable component for any project prioritizing torque over raw speed.
The Orange 12V 30 RPM Johnson Geared DC Motor is a premium-grade DC motor ideal for applications that require high torque at low speed. It features a robust metal gearbox, making it suitable for heavy-duty and continuous use in robotics, conveyor systems, automation setups, and wheel drive mechanisms.
This motor is also encoder compatible, with a rear shaft extension allowing users to attach optical or magnetic encoders for position or speed feedback, enabling closed-loop control.
Built with precision bearings and high-quality windings, this motor ensures smooth and quiet operation with extended reliability.

Key Features:
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12V DC motor with 30 RPM output speed
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High torque Johnson motor – Grade A quality build
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Durable metal gearhead for long service life
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Encoder-mounting compatible shaft for feedback control
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Suitable for robotic platforms, automation systems, and conveyor belts
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Operates smoothly under variable loads
Technical Specifications:
Parameter |
Specification |
Motor Type |
Johnson Geared DC Motor |
Operating Voltage |
6V–12V DC |
Rated Voltage |
12V DC |
Speed |
30 RPM (at 12V) |
Gearbox Type |
All-metal gearbox |
Torque |
~9–12 kg·cm (approx., under load) |
Shaft Diameter |
6mm (with D-cut) |
Shaft Length |
~20–25mm |
Motor Body Diameter |
~36mm |
Motor Length (with gearbox) |
~90–100mm |
Encoder Compatibility |
Yes (rear shaft accessible for mounting) |
Mounting Holes |
Threaded holes on gearbox face |
Weight |
~300g (approx.) |
How to Use:
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Connect motor terminals to a 12V DC power supply or motor driver.
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Reverse polarity to change motor rotation direction.
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Mount securely using the gearbox faceplate holes.
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For encoder feedback, attach a compatible rotary encoder to the rear shaft.
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Use an L298N, L293D, or BTS7960 motor driver with Arduino/Raspberry Pi for control.
Ensure adequate power supply and heat dissipation during extended operation.
Applications:
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Mobile robotic platforms and smart cars
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Line follower, obstacle-avoiding, and AGV robots
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Mini conveyors and automated machines
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Camera pan-tilt systems
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DIY automation projects requiring high torque
Package Includes: