34:1 Metal Gearmotor 25Dx52L mm LP 12V

Pololu item #: 3252
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant

Price break Unit price (US$)
1 25.95
5 23.87
25 21.96
100 20.21

backorders allowed

This gearmotor consists of a low-power, 12 V brushed DC motor combined with a 34.014:1 metal spur gearbox. 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. This gearmotor is also available with an integrated encoder.

Key specifications:

voltage no-load performance stall extrapolation
12 V 170 RPM, 50 mA 3.7 kg⋅cm (51 oz⋅in), 0.9 A

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

 Description Specs (19) Pictures (10) Resources (3) FAQs (1) On the blog (0) 


Size: 25D x 52L mm1
Weight: 88 g
Shaft diameter: 4 mm2

General specifications

Gear ratio: 34.014:1
No-load speed @ 12V: 170 rpm3
No-load current @ 12V: 0.050 A4
Stall current @ 12V: 0.90 A5
Stall torque @ 12V: 3.7 kg·cm5
Max output power @ 12V: 1.6 W
No-load speed @ 6V: 85 rpm6
Stall current @ 6V: 0.45 A6
Stall torque @ 6V: 1.9 kg·cm6
Motor type: 12V, 0.9A stall (LP 12V)

Performance at maximum efficiency

Max efficiency @ 12V: 42 %
Speed at max efficiency: 140 rpm
Torque at max efficiency: 0.50 kg·cm
Current at max efficiency: 0.14 A
Output power at max efficiency: 0.73 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.
Typical; ±20%.
Typical, ±50%; no-load current depends on internal friction, which is affected by many factors, including ambient temperature and duration of motor operation.
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 motor will run at 6 V but is intended for operation at 12 V.

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