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A compact 6V brushed DC gearmotor with a 25:1 metal spur gearbox, delivering strong torque in a small form factor. The cylindrical design has a 20mm diameter...

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A compact 6V brushed DC gearmotor with a 25:1 metal spur gearbox, delivering strong torque in a small form factor. The cylindrical design has a 20mm diameter, and the D-shaped output shaft is 4mm in diameter extending 18mm from the gearbox face plate.

Key Features

  • 25:1 Metal Gearbox – Durable metal spur gears for reliable operation
  • 6V Brushed DC Motor – High power-to-size ratio
  • Compact Form Factor – 20mm diameter cylindrical body
  • D-Shaped Output Shaft – 4mm diameter, 18mm extension for secure mounting

Specifications

  • Voltage: 6V
  • Gear Ratio: 25:1
  • No-Load Speed: 570 RPM
  • No-Load Current: 170mA
  • Stall Torque: 1.6 kg·cm (22 oz·in)
  • Stall Current: 2.9A
  • Diameter: 20mm
  • Output Shaft: 4mm D-shaped, 18mm long

Ideal For

  • Small robotics platforms
  • Motorised mechanisms and actuators
  • Mobile robot drive systems
  • Compact motion control projects

Package Contents

  • 1× 25:1 Metal Gearmotor 20Dx41L mm 6V

Jargon buster

Plain-language definitions for the technical terms used above.

kg·cm
A torque unit often used for hobby servos, meaning how many kilograms of force the servo can hold at a 1 cm arm length. A higher kg·cm rating means the servo can move or hold heavier loads, but power supply current needs may also increase.
Stall torque
The maximum twisting force a servo can produce when its output is held still and cannot move. It helps you judge whether the servo is strong enough for a robot joint, steering linkage, or other load.
Torque
A twisting force that causes something to rotate, usually measured in newton-metres or kilogram-centimetres. It matters when choosing motors, servos, gears, and tools because higher torque is needed to lift heavier loads, turn larger wheels, or move mechanisms without stalling.

Related Tutorials

Free guides on learn.littlebird.com.au

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