50:1 Metal Gearmotor 37Dx54L mm
This gearmotor is a powerful brushed DC motor with 50:1 metal gearbox intended for operation at 12 V. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft.
Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. Stalls can also result in rapid (potentially on the order of seconds) thermal damage to the motor windings and brushes; a general recommendation for brushed DC motor operation is 25% or less of the stall current.
These motors are intended for use at 12 V, though in general, these kinds of motors can run at voltages above and below the nominal voltage (they can begin rotating at voltages as low as 1 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.
12 V: 200 RPM and 300 mA free-run, 170 oz-in (12 kg-cm) and 5 A stall.
|Size:||37D x 54L mm|
|Shaft diameter:||6 mm|
Exact gear ratio: ``(25×30×25×40) / (10×10×15×10) =bb(50:1)``
The face plate has six mounting holes evenly spaced around the outer edge threaded for M3 screws. These mounting holes form a regular hexagon and the centers of neighboring holes are 15.5 mm apart.
|No-load speed @ 12V:||200 rpm|
|No-load current @ 12V:||300 mA|
|Stall current @ 12V:||5000 mA|
|Stall torque @ 12V:||170 oz·in|
|No-load speed @ 6V:||100 rpm1|
|No-load current @ 6V:||250 mA1|
|Stall current @ 6V:||2500 mA1|
|Stall torque @ 6V:||85 oz·in1|
1 This motor will run at 6 V but is intended for operation at 12 V.
The dimensions are also available as a downloadable PDF (461k pdf).
Warning: Do not screw too far into the mounting holes as the screws can hit the gears. We recommend screwing no further than 3mm (1/8″) into the screw hole.