120:1 Mini Plastic Gearmotor HP, Offset 3mm D-Shaf

This compact, inexpensive plastic gearmotor (high-power brushed DC motor with a 120:1 reduction gearbox) is well suited for use in small robots. While intended for operation at 4.5 V, it should run comfortably in the 3 V to 6 V range. The gearbox has a 9.7 mm-long, 3 mm-diameter D-shaped output shaft that is perpendicular to the motor shaft, and a built-in safety clutch helps protect the gears from excessive loads. This version also has a 5×1.5 mm extended motor shaft.

Key specs at 4.5 V: 150 RPM and 130 mA free-run, 1.8 kg-cm and 1.25 A stall.

Specifications:

• Size: 36.5 x 20 x 27.4 mm
• Weight: 19 g
• Shaft diameter: 3 mm
• Shaft type: offset 3mm D
• Typical operating voltage: 4.5 V
• Gear ratio: 120:1
• No-load speed at 4.5V: 150 rpm
• No-load current at 4.5V: 130 mA
• Stall current at 4.5V: 1250 mA
• Stall torque at 4.5V: 1.8 kg-cm
• Extended motor shaft: Yes