![NEMA 14 Bipolar Stepper Motor: 200 Steps/Rev, 7.4V, 0.28A/Phase - The Pi Hut](http://thepihut.com/cdn/shop/files/nema-14-bipolar-stepper-motor-200-steps-rev-7-4v-0-28a-phase-pololu-pol-1207-40469072183491_1200x.jpg?v=1683725897)
![NEMA 14 Bipolar Stepper Motor: 200 Steps/Rev, 7.4V, 0.28A/Phase - The Pi Hut](http://thepihut.com/cdn/shop/files/nema-14-bipolar-stepper-motor-200-steps-rev-7-4v-0-28a-phase-pololu-pol-1207-40469072216259_1200x.jpg?v=1683725902)
![NEMA 14 Bipolar Stepper Motor: 200 Steps/Rev, 7.4V, 0.28A/Phase - The Pi Hut](http://thepihut.com/cdn/shop/files/nema-14-bipolar-stepper-motor-200-steps-rev-7-4v-0-28a-phase-pololu-pol-1207-40469072249027_1200x.jpg?v=1683725901)
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This NEMA 14-size hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 280 mA at 7.4 V, allowing for a holding torque of 650g-cm (9 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.
The following diagram shows the stepper motor dimensions in mm. The dimension labelled “length” is 26 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.