NEMA 14 Bipolar Stepper Motor: 200 Steps/Rev, 2.7V, 1A/Phase

PololuSKU: POL-1209
Sale price £17.42
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Only 10 units left

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This NEMA 14-size hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1A at 2.7V, allowing for a holding torque of 1.4 kg-cm (20 oz-in).

The motor has four colour-coded wires terminated with bare leads: black and green connect to one coil; red and blue connect to the other.

It can be controlled by a pair of suitable H-bridges (one for each coil), but we recommend using a bipolar stepper motor driver.

Our 5mm universal mounting hub can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft, and our NEMA 14 aluminium bracket offers a variety of options for mounting this stepper motor in your project.


  • Size: 35 mm square × 36 mm, not including the shaft (NEMA 14)
  • Weight: 180 g
  • Shaft diameter: 5 mm “D
  • Steps per revolution: 200
  • Current rating: 1A per coil
  • Voltage rating: 2.7 V
  • Resistance: 2.7 Ω per coil
  • Holding torque: 1.4 kg-cm (20 oz-in)
  • Inductance: 4.3 mH per coil
  • Lead length: 30 cm
  • Output shaft supported by two ball bearings


The following diagram shows the stepper motor dimensions in mm. The dimension labelled “length” is 36 mm. The output D-shaft has a length of 21 mm and a 5 mm diameter with a section that is flattened by 0.5 mm. This shaft works with our 5 mm universal mounting hub.


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