12V 200 RPM Johnson Geared DC Motor - Grade A Quality

12V 200 RPM Johnson Geared DC Motor

The 12V 200 RPM Johnson Geared DC Motor is a reliable and powerful motor for your robotics and DIY projects. It provides 200 RPM speed and 56.1 N-cm torque. The motor has a 30mm long main shaft with a hole for easy connection and a back shaft that works with encoders for speed and position feedback.

This motor runs on 12V (with a range from 6V to 18V) and offers more torque than standard motors, making it perfect for projects that need strength and precision.

Features

• High-quality branded Johnson DC motor.
• Sturdy construction for durability.
• Rear shaft for easy encoder mounting.
• Shaft equipped with metal bushes for long life.
• High-quality gears for smooth operation.
• Shaft includes a hole for better coupling.

Applications

• Small Robotics
• Automated Conveyor or Belt Systems
• Servo-type Mechanisms
• Home Automation
• Educational / STEM Projects

12 V Johnson Geared DC Motor – 100 RPM vs 200 RPM

Feature	100 RPM Motor	200 RPM Motor
No‑Load Speed @12 V	~100 RPM :contentReference[oaicite:2]{index=2}	~200 RPM :contentReference[oaicite:3]{index=3}
Rated Voltage	12 V DC :contentReference[oaicite:4]{index=4}	12 V DC :contentReference[oaicite:5]{index=5}
Rated Torque (approx)	~10–12 kg‑cm at 100 RPM (Grade A) :contentReference[oaicite:6]{index=6}	~6–8 kg‑cm at 200 RPM :contentReference[oaicite:7]{index=7}
Stall Torque / Loads	Stall ~20–30 kg‑cm (varies) :contentReference[oaicite:8]{index=8}	Stall ~15–16 kg‑cm (varies) :contentReference[oaicite:9]{index=9}
Speed vs Torque Trade‑off	Lower speed → higher torque headroom → better for heavy loads or slow motion applications	Higher speed → moderate torque → suitable for faster rotation but lighter loading
Typical Use Case	Actuators, robotics arms, slow rotation, high‑load applications	Conveyor belts, wheels with moderate speed, general purpose motion where speed matters a bit more
Considerations	If used where speed matters you may need gear reduction; also higher torque requires robust mounting and structure	May not have as much torque headroom for heavy loads; ensure motor not overloaded and gearbox supports higher speed operations

12V Johnson Geared DC Motor – Troubleshooting Tips

• Motor Not Spinning: Check power supply voltage, wiring connections, and battery charge.
• Low or Erratic Speed: Inspect for mechanical friction, loose gears, or debris in the gearbox.
• Excessive Heat: Ensure motor is not overloaded or stalled; give it rest periods and check rated torque limits.
• Unusual Noise or Grinding: Check gear alignment, lubricate gears if needed, and ensure no foreign particles inside gearbox.
• Motor Stops Intermittently: Inspect for loose wires, poor solder joints, or intermittent power supply.
• Reduced Torque: Confirm motor is operating within rated voltage and not overloaded; check for worn gears or shaft misalignment.