Micro motor N20-BT17 50:1 250RPM - 9V

Index: DNG-12556 EAN: 5904422306571

The N20 series miniature motor with 50:1 gearing, has 250 RPM, torque is 0.5 kg*cm (0.049 Nm). The supply voltage is from 3V to 9V.

Micro motor N20-BT17 50:1 250RPM - 9V
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Manufacturer: N20 Motors

Product description: N20-BT17 micro 50:1 250 RPM motor - 9V

Small, lightweight yet powerful motors from the N20 series, compatible with Pololu's motors, are used by robot builders as drive units. The units can be powered by up to 9 V (depending on the model), and gain their useful power above 3 V. The optimum voltage, at which the ratio of power to strength is most favourable, is 6 V.

Silnik N20

Dimensions of the motor

The motor body is a cuboid measuring 24 x 10 x 12 mm. The gearbox is 9.27 mm long. There is a 3 mm D-shaped shaft at the output. Total mass is about 10 g.

The drawing shows dimensions of micro motor with gearbox.

Technical specification N20-BT17

Supply voltage:

3 V - 9 V

No-load current (9 V):

50 mA

No-load speed (9 V):

250 rpm

Torque (9 V):

0.5 kg*cm (0.049 Nm)

Gear ratio:


Shaft diameter:

3 mm

Body dimensions:

24 x 10 x 12 mm


10 g

Double-sided shaft:



N20 motors are compatible with Pololu motor accessories.

  • Mounts: Special mounts in white or black have been designed for mounting the motors. An extended version and one made of high-strength aluminium are also available.

Silnik N20

Silnik N20

Silnik N20


N20 motors are not compatible with Pololu micro motor encoders.

Diameter 12 mm
Length 24 mm
Voltage to 3.0 V
Voltage from 9.0 V
Motor - current 70 mA
Motor - gear 50:1
Rotation speed 250 obr/min
Torque 0.5 kg*cm
Mass 10 g
Motor - shaft 3 mm
Package width 4.8 cm
Package height 1.1 cm
Package depth 2.5 cm
Package weight 0.01 kg

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Product reviews

Micro motor N20-BT17 50:1 250RPM - 9V


Average grade


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Andrzej 25.01.2023 Confirmed purchase Translated review
It works fine

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