The N20 Gear Motor is a miniature high-torque DC motor equipped with a precision metal gearbox. The 3V 30RPM variant is specifically optimized for low-voltage applications, such as those powered by a single Li-ion cell or two AA batteries. It provides a slow, powerful, and steady rotation, making it ideal for precision tasks where speed must be sacrificed for control and pushing force.

Specifications

• Rated Voltage: 3V DC (Operating range: 1.5V – 6V).
• No-Load Speed: 30 RPM (at 3V).
• Shaft Type: D-shape (flat side to prevent gear or wheel slippage).
• Shaft Diameter: 3mm.
• Shaft Length: 10mm.
• Gearbox: Full Metal (Precision brass and steel).
• No-Load Current: ~ 20mA.
• Stall Current: ~ 300mA (at 3V).
• Stall Torque: ~ 2.5 kgcm to 3.5 kgcm.

Features

• Low Voltage Optimization: Designed to reach its rated speed at just 3V, allowing for extremely compact battery-powered designs.
• High Reduction Ratio: The gearbox significantly multiplies the motor's torque, allowing this tiny unit to move surprisingly heavy loads.
• All-Metal Gear Train: Ensures high durability and prevents the internal gears from stripping under load, a common failure point in plastic gear motors.
• Ultra-Compact Profile: The rectangular footprint is standardized across the N20 series, fitting into micro-robot chassis and slim electronic enclosures.

Pin and Connection Guide

• Terminals: Two small solder tabs at the rear.
• Direction Control: The motor is bidirectional. Swapping the positive and negative wires will reverse the rotation.
• PWM Support: Compatible with low-voltage motor drivers (like the DRV8833 or MX1508) for variable speed control.

Common Applications

• Micro-Robotics: Precision steering for small rovers or driving slow-moving robotic arms.
• Electronic Locks: Powering the latch mechanism in smart locks or battery-operated safes.
• Actuators: Moving internal parts in medical devices or small-scale laboratory automation.
• Smart Home Gadgets: Controlling automatic blinds, rotating displays, or motorized camera sliders.

Usage Tips

• Mounting: Always use a standard N20 mounting bracket to avoid putting stress on the gearbox casing.
• Voltage Management: While rated for 3V, it can handle up to 6V for increased torque and speed (approx. 60 RPM), though this will shorten the motor's lifespan.
• Soldering: Use 26AWG–30AWG wire. The terminals are small and delicate; apply heat-shrink tubing to the joints to provide strain relief and prevent short circuits.
• Stall Prevention: Avoid leaving the motor in a stalled state for extended periods, as the heat can quickly damage the small internal windings.