This cylindrical, 2.54" x 0.98" x 0.98" brushed DC gearmotor with a 46.851:1 metal gearbox has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 2249 counts per revolution of the gearbox’s output shaft. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft.
These motors are intended for use at 6 V. In general, these kinds of motors can run at voltages above and below this nominal voltage, so they should comfortably operate in the 3 – 9 V range, though they can begin rotating at voltages as low as 1 V. Higher voltages could start negatively affecting the life of the motor.
These gearmotors have output shafts with a diameter of 4 mm. This universal aluminum mounting hub for 4mm shafts can be used to mount wheels and mechanisms to the gearmotor’s output shaft.
The face plate has two mounting holes threaded for M3 screws. You can use the 25D mm metal gearmotor bracket to mount the gearmotor to your project via these mounting holes and the screws that come with the bracket.
The integrated two-channel Hall effect encoder is used to sense the rotation of a magnetic disk on a rear protrusion of the motor shaft. The quadrature encoder provides a resolution of 48 counts per revolution of the motor shaft when counting both edges of both channels. To compute the counts per revolution of the gearbox output, multiply the gear ratio by 48.
- Gear ratio: 47:1
- Free-run speed @ 6V: 120 rpm
- Free-run current @ 6V: 80 mA
- Stall current @ 6V: 2200 mA
- Stall torque @ 6V: 50 oz·in (3.6kgf.cm)
- Lead length: ~8"
- Size: 25D x 64L mm
- Weight: 3.58 oz
- Shaft diameter: 4 mm