This gearmotor consists of a high-power, 6 V brushed DC motor combined with a metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 211.2 counts per revolution of the gearbox’s output shaft. The gearmotor is cylindrical, with a diameter just under 25 mm, and the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox.

These cylindrical brushed DC gearmotors are available in a wide range of gear ratios and with five different motors (two power levels of 6V motors and three power levels of 12V motors). The gearmotors all have the same 25 mm diameter body and 4 mm diameter gearbox output shaft, so it is generally easy to swap one version for another if your design requirements change (though the length of the gearbox tends to increase with the gear ratio). All versions are also available with an integrated 48 CPR quadrature encoder on the motor shaft. Please see the 25D metal gearmotor comparison table for detailed specifications of all our 25D metal gearmotors. This dynamically-sortable table can help you find the version that offers the best combination of speed, torque, and current draw for your particular application.

A more basic comparison table is available below :

Rated Voltage	Motor Type	Stall Current @ Rated Voltage	No-Load Speed @ Rated Voltage	Approximate Stall Torque @ Rated Voltage	With Encoder	Without Encoder
6 V	high-power (HP)	6.5 A	10,000 RPM	5 oz-in	1:1 HP 6V w/encoder
			2150 RPM	20 oz-in	4.4:1 HP 6V w/encoder	4.4:1 HP 6V
			990 RPM	39 oz-in	9.7:1 HP 6V w/encoder	9.7:1 HP 6V
			460 RPM	75 oz-in	20.4:1 HP 6V w/encoder	20.4:1 HP 6V
			280 RPM	90 oz-in	34:1 HP 6V w/encoder	34:1 HP 6V
			200 RPM	115 oz-in	47:1 HP 6V w/encoder	47:1 HP 6V
			130 RPM	150 oz-in	75:1 HP 6V w/encoder	75:1 HP 6V
			97 RPM	210 oz-in	99:1 HP 6V w/encoder	99:1 HP 6V
			56 RPM	350 oz-in	172:1 HP 6V w/encoder	172:1 HP 6V

Package Includes:

• 1 x Pololu 1570 / 1571 / 1572 / 1573 / 1574 / 1575 / 1576 / 1577 Metal Gearmotor 25Dx56L mm HP 6V