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150:1 Metal Gearmotor 37Dx73L mm 12V with 64 CPR Encoder (Helical Pinion)

55,00 €

This gearmotor is a powerful 12V brushed DC motor with a 150:1 metal gearbox and an integrated quadrature encoder with a resolution of 64 counts per revolution (CPR) of the motor shaft and 9600 CPR of the gearbox’s output shaft. The gearbox is composed mainly of spur gears, but it features helical gears for the first stage for reduced noise and improved efficiency. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft. This gearmotor is also available without an encoder.

Key specifications:

voltageno-load performancestall extrapolation
12 V 67 RPM, 200 mA

49 kg⋅cm (680 oz⋅in), 5.5 A


Size: 37D × 72.5L mm1
Weight: 210 g
Shaft diameter: 6 mm2

General specifications

Gear ratio: 150:1
No-load speed @ 12V: 67 rpm
No-load current @ 12V: 0.2 A
Stall current @ 12V: 5.5 A3
Stall torque @ 12V: 49 kg·cm3
Max output power @ 12V: 6 W4
No-load speed @ 6V: 33 rpm5
No-load current @ 6V: 0.15 A5
Stall current @ 6V: 3.0 A5
Stall torque @ 6V: 30 kg·cm5
Motor type: 12V

Performance at maximum efficiency

Max efficiency @ 12V: 44 %
Speed at max efficiency: 58 rpm
Torque at max efficiency: 6.5 kg·cm
Current at max efficiency: 0.72 A
Output power at max efficiency: 3.8 W

General specifications

Lead length: 20 cm6
Encoders?: Y
Encoder resolution: 64 CPR


Length measurement is from gearbox face plate to back of encoder cap (it does not include the output shaft). See dimension diagram for details.
D shaft.
Stalling is likely to damage the gearmotor. Stall parameters come from a theoretical extrapolation of performance at loads far from stall. As the motor heats up, as happens as it approaches an actual stall, the stall torque and current decrease.
This is the output power at the maximum recommended operating load of 10 kg⋅cm; higher power might be achievable for brief durations at higher loads (see performance graphs in the datasheet).
This motor will run at 6 V but is intended for operation at 12 V.
May vary by a few centimeters.


Measuring 37 mm (1.46″) in diameter, these brushed DC gearmotors are the largest and most powerful we carry. They are available in a range of gear ratios from 6.3:1 to 150:1 and with 12 V or 24 V motors, and all versions are available with integrated 64 CPR quadrature encoders on the motor shafts. The 12 V and 24 V motors offer approximately the same performance at their respective nominal voltages, with the 24 V motor drawing half the current of the 12 V motor. See the 37D metal gearmotor datasheet (2MB pdf) for more information, including detailed performance graphs for each gearmotor version. You can also use our dynamically sortable 37D gearmotor comparison table to search for the version that offers the best combination of speed, torque, and current draw for your particular application

Dimensions of the 37D metal gearmotors with 64 CPR encoders. Units are mm over [inches].

This diagram is also available as a downloadable PDF (459k pdf).