This gearmotor consists of a medium-power, 12 V brushed DC motor combined with a 226.76:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 10,884.47 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.

Rated Voltage	Motor Type	Stall Current @ Rated Voltage	No-Load Speed @ Rated Voltage	Approximate Stall Torque @ Rated Voltage	With Encoder
12 V	medium-power (MP)	2.1 A	7800 RPM	2.7 oz-in	1:1 MP 12V w/encoder
			1700 RPM	11 oz-in	4.4:1 MP 12V w/encoder
			770 RPM	22 oz-in	9.7:1 MP 12V w/encoder
			370 RPM	42 oz-in	20.4:1 MP 12V w/encoder
			220 RPM	63 oz-in	34:1 MP 12V w/encoder
			160 RPM	85 oz-in	47:1 MP 12V w/encoder
			100 RPM	125 oz-in	75:1 MP 12V w/encoder
			76 RPM	165 oz-in	99:1 MP 12V w/encoder
			43 RPM	250 oz-in	172:1 MP 12V w/encoder
			33 RPM	320 oz-in	227:1 MP 12V w/encoder

Documents:

• Dimension diagram
• 3D model

Package Includes :

• 1 x Pololu 4860 / 4861 / 4862 / 4863 / 4864 / 4865 / 4866 / 4867 / 4868 / 4869 Metal Gearmotor 25D MP 12V with 48 CPR Encoder