35:1 Mini Metal Gearmotor

35:1 Mini Metal Gearmotor
Pololu item #: 1091 51 in stock

Price break Unit price (US$)
1 17.95
10 15.25
50 13.46


backorders allowed

This gearmotor is a compact (1.50" x 0.59" x 0.47") brushed DC motor with 35:1 metal gearbox. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft that matches the micro metal gearmotor output shafts.

Key specs at 6 V: 350 RPM and 70 mA free-run, 20 oz-in (1.4 kg-cm) and 1.5 A stall.

 Description Specs (8) Pictures (1) Resources (0) FAQs (0) On the blog (1) 

Gearmotor Dimensions:

This brushed DC motor has a long (0.365" or 9.27 mm, not 8mm as shown in the drawing below), 3 mm-diameter D-shaped metal output shaft that matches our assortment of Pololu wheels and the Solarbotics RW2 rubber wheel. Alternatively, you can use the Pololu universal mounting hub to mount custom wheels and mechanism to the micro metal gearmotor’s output shaft.

The brass faceplate has two mounting holes threaded for M2 screws (2 mm diameter, 0.4 mm thread pitch). This gearmotor works with our 15.5D mm metal gearmotor brackets.

Note: this gearmotor is not compatible with our Sanyo-style micro gearmotor mounting brackets (products 989 and 1089).

35:1 mini metal gearmotor dimensions (units in mm).

Pololu wheel 32×7mm on a micro metal gearmotor.
Pololu wheel 42×19mm with micro metal gearmotor.
Black Pololu 90×10mm wheel on a Pololu micro metal gearmotor.

These motors are intended for use at 9 V, which means you can get more speed and torque out of this motor than is listed in the 6 V specs. In general, these kinds of motors can run at voltages above and below this nominal voltage, so they should comfortably operate in the 3 – 12 V range (the motor can begin rotating at voltages as low as 0.5 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.

At 6 V, this gearmotor will have a no-load RPM of around 350 with a free-run current of 70 mA, a stall current of 1.5 A, and a stall torque of around 14 oz-in (1 kg-cm).

Selecting the Right Gearmotor

We offer a wide selection of metal gearmotors that offer different combinations of speed and torque. Our metal gearmotor comparison table can help you find the motor that best meets your project’s requirements.

Some of the Pololu metal gearmotors.

People often buy this product together with:

Pololu Universal Aluminum Mounting Hub for 3mm Shaft, #2-56 Holes (2-Pack) Pololu Universal Aluminum Mounting Hub for 3mm Shaft, #2-56 Holes (2-Pack)
50:1 Micro Metal Gearmotor HP 50:1 Micro Metal Gearmotor HP
100:1 Micro Metal Gearmotor HP 100:1 Micro Metal Gearmotor HP