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12mm Micro Gear Motor BG N20 with M4 spindle

Item number: 61003

The geared motor in the size N20 is suitable for countless projects in model building and many other areas thanks to the smallest size and many gear variants. The M4 thread spindle allows linear movements to be implemented quickly and easily.

Category: Motors

Nominal voltage
Rated Speed

Available now!
17,95 €

including19% VAT., plus shipping

There are variations of this item. Please select the variation you wish.


Rated voltage: 6 V 12 V
Nominal size: 12 x 10 mm
Shaft diameter: M4
Shaft shape: Threaded spindle
Arrangement of the output shaft: Concentric
Type of Gearbox: Spur gears
Material of the gears: Metal
Shipping weight: 0,01 Kg
Product weight: 0,01 Kg


The geared motor in size N20 with M4 threaded spindle is a small geared motor suitable for countless projects in model building and many other areas. With2 different motors or operating voltages (6V, 12V) and7 different gear variants (1: 500 - 1: 30) it is suitable for a wide range of applications in functional model building, e.g. for truck, construction machinery, crane, ship and car models. Even in the field of robotics it finds versatile applications.

Thanks to the open metal gearbox, themotor runs quietly and impresses with its long service life. As thegearbox is open, it can be easily greased. As an output shaft, this motor has a 55mm long M4 threaded spindle. Thus it is ideally suited to produce linear motion without complex designs. Light loads such as ramps can be moved directly with the motor. However, in order to move heavy loads or to transmit larger forces, the thread spindle should be additionallysupported axially in order not to introduce the entire load into the gear housing. The last gear stage of the gearbox is pressed directly onto the threaded spindle. The motor is usually mounted via the two M1.6 threaded holes on the front of the gear box.

The motor itself has a size of only 15 x 12 x 10 mm, the metal gearbox is 9 x 12 x 10 mm (the same for all gearbox variants). The complete unit made of motor and gearbox measures (without shaft) approx. 25.5 x 12 x 10 mm. The exact dimensions can be taken from the drawing. The performance data of all engine / gearbox variants can be taken from the tables (these are standard values which, of course, can vary depending on the application).

Do not forget: we also offer a special motor mount which makes this motor easy to mount!

Technical specifications

Rated operating voltage: 6V, or 12V (depending on variant)
Transmission ratio: 1: 500, 1: 300, 1: 250, 1:50, 1: 100, 1:75, 1:50, 1:38, 1:30 (depending on variant)
Nominal speed:30 -1000 rpm (depending on variant)
Nominal Torque: 0.3 - 2.4 kg * cm (1 kg * cm = 0.0981 Nm) (depending on variant)
Gearbox: metal
Type: Brushed motor
Output shaft:M4 x55 mm
Dimensions: approx. 25.5 x 12 x 10 mm (see drawing)
Weight: approx. 15g

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