A compact, inexpensive brushed DC motor with a 120:1 plastic reduction gearbox, well suited for small robot builds. The motor is rated for 4.5V but runs comfortably in the 3–6V range. The gearbox output shaft is a 3mm D-shape, offset from and parallel to the motor shaft. A built-in safety clutch protects the gears from excessive loads.

Key Features

• 120:1 Gear Ratio – Good balance of speed and torque for small robots
• 3mm D-Shaft Output – Offset from the motor shaft, 9.7mm long
• 3–6V Operating Range – Rated for 4.5V, flexible voltage range
• Built-In Safety Clutch – Protects gears from stalling damage
• Compact Size – Small enough for mini robot chassis

Specifications (at 4.5V)

• No-Load Speed – 120 RPM
• No-Load Current – 80mA
• Stall Torque – 1.4 kg·cm (20 oz·in)
• Stall Current – 800mA
• Operating Voltage – 3–6V (rated 4.5V)
• Gear Ratio – 120:1
• Output Shaft – 3mm D-shape, 9.7mm long, offset

Ideal For

• Small robot drives and mini rovers
• Lightweight wheeled platforms
• Educational robotics projects
• Battery-powered mechanical projects

Package Contents

• 1× 120:1 mini plastic gearmotor