The N20 Gear Motor is a miniature high-performance DC motor paired with a precision metal reduction gearbox. This specific 12V 300RPM variant offers a higher speed profile than lower-ratio versions, making it ideal for small-scale robotics and automated mechanisms that require a balance between rapid movement and mechanical torque.

Specifications

• Rated Voltage: 12V DC (Operating range: 6V – 14V).
• No-Load Speed: 300 RPM (at 12V).
• Shaft Type: D-shape (single flat side for secure mounting).
• Shaft Diameter: 3mm.
• Shaft Length: 10mm.
• Gearbox: Full Metal (Brass/Steel alloy).
• No-Load Current: ~ 40mA.
• Stall Current: ~ 0.8A – 1.0A (at 12V).
• Reduction Ratio: Varies by batch, typically around 1:50 or 1:75 for this speed.

Features

• Compact Powerhouse: The small rectangular footprint allows it to be integrated into devices where standard DC motors or servos are too bulky.
• High-Speed Output: 300 RPM is an excellent "mid-range" speed for small wheels (approx. 30mm–43mm diameter), providing a good top speed for mini-rovers.
• Durable Metal Gearing: Unlike plastic gears that can strip under pressure, the all-metal assembly handles sudden stops and high-torque demands reliably.
• Precise D-Shaft: The 10mm length provides ample space for mounting wheels, encoders, or couplers without the risk of the attachment slipping during rotation.

Pin and Connection Guide

• Terminals: Two solder tabs at the rear.
• Direction Control: The rotation direction is determined by the polarity. Swap the positive and negative wires to reverse the motor.
• PWM Support: Fully compatible with PWM (Pulse Width Modulation) motor drivers like the L298N, TB6612FNG, or DRV8833 for precise speed control.

Common Applications

• Fast Micro-Robots: Small line followers, combat bots (ant-weight), and racing rovers.
• Automated Lock Mechanisms: Driving the bolt in smart door locks or safes.
• Precision Actuators: Tilt mechanisms for cameras or small-scale industrial sorting arms.
• Consumer Electronics: Moving parts in high-end toys, motorized blinds, or automated dispensers.

Usage Tips

• Mounting Brackets: Use standard N20 motor brackets (metal or plastic) to secure the gearbox. Avoid over-tightening screws into the gearbox housing to prevent binding the internal gears.
• Driver Selection: Ensure your motor driver can handle the 12V input and at least 1A of peak stall current per channel.
• Power Delivery: While it can run at 12V, avoid prolonged stall conditions. The small motor windings can overheat quickly if the motor is forced to stop while full power is applied.
• Soldering: Use flexible, thin-gauge wire (24AWG–28AWG) and apply heat-shrink tubing to the terminals to prevent short circuits against the metal motor casing.