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A compact 6V brushed DC gearmotor with long-life carbon brushes and a 25:1 metal spur gearbox. This version includes an extended 6 × 2mm motor shaft at the r...

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A compact 6V brushed DC gearmotor with long-life carbon brushes and a 25:1 metal spur gearbox. This version includes an extended 6 × 2mm motor shaft at the rear, useful for attaching encoder wheels or other feedback mechanisms.

The cylindrical body 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
  • Carbon Brushes – Long-life brushes for extended motor lifespan
  • Extended Motor Shaft – 6 × 2mm rear shaft for encoder wheel attachment
  • Compact Form Factor – 20mm diameter cylindrical body
  • D-Shaped Output Shaft – 4mm diameter, 18mm extension

Specifications

  • Voltage: 6V
  • Gear Ratio: 25:1
  • No-Load Speed: 570 RPM
  • No-Load Current: 150mA
  • Stall Torque: 1.6 kg·cm (22 oz·in)
  • Stall Current: 2.9A
  • Diameter: 20mm
  • Output Shaft: 4mm D-shaped, 18mm long
  • Extended Motor Shaft: 6 × 2mm

Ideal For

  • Small robotics platforms with encoder feedback
  • Motorised mechanisms requiring long motor life
  • Mobile robot drive systems
  • Compact motion control projects

Package Contents

  • 1× 25:1 Metal Gearmotor 20Dx41L mm 6V CB with Extended Motor Shaft

Jargon buster

Plain-language definitions for the technical terms used above.

encoder
A device attached to a motor or shaft that reports movement, such as rotation steps or position. In a pump system, an encoder can help measure or control how much the motor has turned, which affects how repeatable the watering amount can be.
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.
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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