NEMA 14 Bipolar Stepper Motor: 200 Steps/Rev, 7.4V, 0.28A/Phase

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.

Specifications

• Size: 35 mm square × 26 mm, not including the shaft (NEMA 14)
• Weight: 130 g
• Shaft diameter: 5 mm “D”
• Steps per revolution: 200
• Current rating: 280 mA per coil
• Voltage rating: 7.4 V
• Resistance: 26 Ω per coil
• Holding torque: 650g-cm (9 oz-in)
• Inductance: 19.2 mH per coil
• Lead length: 30 cm
• Output shaft supported by two ball bearings

Dimensions

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.

Resources

• Datasheet
• 3D Model