120:1 Mini Plastic Gearmotor, Offset 3mm D-Shaft Output

This compact and affordable plastic gearmotor, featuring a brushed DC motor with a 120:1 reduction gearbox, is an ideal choice for small robots. Designed to operate at 4.5 V, it can run smoothly from 3 V to 6 V. The gearbox has a 9.7mm-long, 3mm-diameter D-shaped output shaft that's offset but parallel to the motor shaft. A built - in safety clutch protects the gears from overloads. Key specs: at 4.5 V, it has a no - load performance of 120 RPM and 80 mA, and a stall extrapolation of 1.4 kg⋅cm (20 oz⋅in) and 800 mA.

Using this gearmotor is easy. First, connect it to a power source within the 3V - 6V range. It's best to start with 4.5V as it's the intended operating voltage. Then, attach your small robot parts to the 3mm D - shaped output shaft. When using, avoid overloading the motor as this can damage the gears, but the built - in safety clutch provides some protection. For maintenance, keep it clean and dry. Check the power connections regularly to make sure they're secure. If you notice any unusual noises or performance changes, stop using it and check for possible issues.