The N20 Gear Motor is a miniature high-speed DC motor integrated with a precision metal reduction gearbox. The 6V 500RPM variant is an excellent choice for micro-robotics and automated projects that require rapid movement without sacrificing the durability of all-metal internal components. It features a 10mm D-shaped shaft, which is the industry standard for secure, non-slip mounting of wheels and gears.

Specifications

• Rated Voltage: 6V DC (Operating range: 3V – 9V).
• No-Load Speed: 500 RPM (at 6V).
• Shaft Type: D-shape (flat side for mechanical locking).
• Shaft Diameter: 3mm.
• Shaft Length: 10mm.
• Gearbox Material: All-metal (Precision brass and steel).
• No-Load Current: ~ 45mA.
• Stall Current: ~ 700mA (at 6V).
• Stall Torque: ~ 0.3 kgcm to 0.5 kgcm.

Features

• High-Speed Output: At 500 RPM, this motor is significantly faster than standard 100 RPM versions, making it ideal for micro-rovers and line followers that prioritize agility.
• Rugged Metal Gearing: The all-metal gear train provides superior wear resistance and prevents "stripped gears," a common issue with plastic gearboxes under sudden stress.
• Miniature Profile: The compact 10 x 12 mm cross-section allows it to fit into slim robot chassis, specialized 3D-printed enclosures, and tight mechanical assemblies.
• Reliable D-Shaft: The 10mm length ensures that couplers and wheels have plenty of surface area for a firm grip, while the D-profile prevents the attachment from spinning freely.

Pin and Connection Guide

• Terminals: Two small solder tabs at the rear of the motor.
• Direction Control: The motor is bidirectional. Swapping the positive and negative power wires will change the rotation from clockwise to counter-clockwise.
• PWM Support: Fully compatible with 6V-rated motor drivers (such as the L298N, TB6612FNG, or DRV8833) for variable speed control.

Common Applications

• Micro-Robotics: Fast-moving line followers, "ant-weight" combat robots, and agile 4WD rovers.
• Automated Mechanisms: High-speed latches for smart locks, shutters, and small component sorters.
• Consumer Electronics: Moving parts in high-end toys, motorized blinds, or automated dispensers.
• Hobbyist Projects: Powering 3D-printed gear systems, rotating displays, and custom-built animated dioramas.

Usage Tips

• Mounting: Always use a dedicated N20 bracket to secure the motor. Avoid applying excessive force to the thin gearbox housing to ensure the internal gears remain perfectly aligned.
• Voltage Limit: While it can run at 9V for extra speed, 6V is the recommended "sweet spot" for maintaining motor health and preventing overheating.
• Soldering: The terminals are delicate. Use flexible 26AWG–30AWG wire and apply heat-shrink tubing over the soldered joints to provide strain relief.
• Inertia Management: Because the motor spins quickly, sudden stops can put stress on the tiny metal teeth. Using "soft-stop" or coasting in your code can extend the life of the gearbox.