Pololu
378:1 Metal Gearmotor 25Dx58L mm LP 6V
This Pololu 25D metal gearmotor combines a low-power 6V brushed DC motor with a 377.93:1 metal spur gearbox. The high gear ratio delivers substantial torque ...
This Pololu 25D metal gearmotor combines a low-power 6V brushed DC motor with a 377.93:1 metal spur gearbox. The high gear ratio delivers substantial torque at low speed, making it well suited for applications that need strong, controlled movement rather than high RPM.
The gearmotor uses the standard Pololu 25D form factor (25mm diameter) with a 4mm D-shaped output shaft extending 12.5mm from the gearbox faceplate. This version is also available with an integrated 48 CPR quadrature encoder.
Specifications
- Gear Ratio – 377.93:1
- Motor Type – Low Power (LP), brushed DC
- Operating Voltage – 6V
- No-Load Speed – 16 RPM
- No-Load Current – 100 mA
- Stall Torque – 25 kg·cm (350 oz·in)
- Stall Current – 2.0 A
- Output Shaft – 4mm diameter, D-shaped, 12.5mm long
- Gearbox Diameter – 25mm
- Gearbox Length – 58mm (including motor)
Key Features
- All-Metal Gearbox – Durable metal spur gears for long service life
- Standard 25D Form Factor – Compatible with Pololu 25D motor brackets and mounting accessories
- High Torque – 25 kg·cm stall torque for demanding loads
- Swappable – Same mounting dimensions as other 25D gearmotors for easy ratio changes
Ideal For
- Robotics platforms requiring high torque at low speed
- Motorised mechanisms and actuators
- Projects using Pololu 25D motor mounts and brackets
Package Contents
- 1× 378:1 Metal Gearmotor 25Dx58L mm LP 6V
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.
- 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.
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Brands
Robotics & Motion
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