150:1 Metal Gearmotor 37Dx57L mm 24V (Helical Pinion)

Pololu item #: 4687
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant

Price break Unit price (US$)
1 32.95
5 30.31
25 27.89
100 25.66

backorders allowed

This gearmotor is a powerful brushed DC motor with 150:1 metal gearbox intended for operation at 24 V. 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 with an integrated encoder.

Key specifications:

voltage no-load performance stall extrapolation
24 V 68 RPM, 100 mA 56 kg⋅cm (780 oz⋅in), 3 A

Alternatives available with variations in these parameter(s): gear ratio motor type encoders? Select variant…

 Description Specs (20) Pictures (10) Resources (4) FAQs (1) On the blog (0) 


Size: 37D × 57L mm1
Weight: 195 g
Shaft diameter: 6 mm2

General specifications

Gear ratio: 150:1
No-load speed @ 24V: 68 rpm
No-load current @ 24V: 0.1 A
Stall current @ 24V: 3 A3
Stall torque @ 24V: 56 kg·cm3
Max output power @ 24V: 6 W4
No-load speed @ 12V: 33 rpm5
No-load current @ 12V: 0.08 A5
Stall current @ 12V: 1.7 A5
Stall torque @ 12V: 36 kg·cm5
Motor type: 24V

Performance at maximum efficiency

Max efficiency @ 24V: 45 %
Speed at max efficiency: 59 rpm
Torque at max efficiency: 7.3 kg·cm
Current at max efficiency: 0.41 A
Output power at max efficiency: 4.4 W

General specifications

Encoders?: N


Length measurement is from gearbox face plate to back of motor (it does not include the output shaft or motor terminals). 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 12 V but is intended for operation at 24 V.

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