172:1 Metal Gearmotor 25Dx71L mm MP 12V with 48 CPR Encoder

The 172:1 Metal Gearmotor 25Dx71L mm MP 12V with 48 CPR Encoder is a powerful, compact device. It pairs a medium-power, 12V brushed DC motor with a 171.79:1 metal spur gearbox. This combination results in a robust gearmotor that delivers high performance and reliability. The gearmotor also features an integrated 48 CPR quadrature encoder on the motor shaft, providing 8245.92 counts per revolution of the gearbox's output shaft. The cylindrical gearmotor measures just under 25 mm in diameter, while the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox. Pololu also offers this gearmotor without an encoder.

The 172:1 Metal Gearmotor is perfect for a wide range of applications. It can be used in robotics, automation systems, and other projects that require precise movement control. The integrated 48 CPR encoder allows for accurate tracking of the motor's position, enabling precise control of the output shaft's rotation. Its compact size and high power-to-weight ratio make it an excellent choice for projects where space is at a premium.

Key specifications of the gearmotor include a 12V voltage rating, no-load performance of 46 RPM and 100 mA, and stall extrapolation of 18 kg⋅cm (equivalent to 250 oz⋅in) and 1.8 A. These specifications underscore the gearmotor's ability to deliver high performance even under demanding conditions. Its robust construction, featuring a metal spur gearbox, ensures long-lasting reliability.