This gearmotor consists of a high-power, 12 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 4741.44 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	high-power (HP)	5.6 A	10,200 RPM	5.5 oz-in	1:1 HP 12V w/encoder
			2250 RPM	23 oz-in	4.4:1 HP 12V w/encoder
			1030 RPM	44 oz-in	9.7:1 HP 12V w/encoder
			500 RPM	85 oz-in	20.4:1 HP 12V w/encoder
			290 RPM	120 oz-in	34:1 HP 12V w/encoder
			210 RPM	165 oz-in	47:1 HP 12V w/encoder
			130 RPM	240 oz-in	75:1 HP 12V w/encoder
			100 RPM	300 oz-in	99:1 HP 12V w/encoder


Documents:

• Datasheet
• Dimension Diagram
• 3D Model

Package Includes :

• 1 x Pololu 4840/4841/4842/4843/4844/4845/4846/4847 Metal Gearmotor 25D HP 12V with 48 CPR Encoder