Stepper Motor: Bipolar, 200 Steps/Rev, 20×30mm, 3.9V, 0.6 A/Phase

Overview

This small hybrid bipolar stepping motor has a 1.8° step angle 200 steps/revolution. Each phase draws 600 mA at 3.9 V, allowing for a holding torque of 180 g-cm 2.5 oz-in. The motor has four color-coded wires terminated with bare leads: black and green connect to one coil; red and blue connect to the other. These leads connect to the stepper motor through a removable JST-ZHR-5 connector. The motor can be controlled by a pair of suitable H-bridges one for each coil, but we recommend using a bipolar stepper motor driver.

Our 4 mm universal mounting hub can be used to mount objects on the stepper motor’s 4 mm-diameter output shaft.

Specifications

• More specifications are available in the datasheet 51k pdf.

Dimensions

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “Length” is 30 mm. The output D-shaft has a length of 15 mm and a 4 mm diameter with a section that is flattened by 0.5 mm. This shaft works with our 4 mm universal mounting hub.

The inside of a bipolar stepper motor.

Stepper Motor Applications

Stepper motors are generally used in a variety of applications where precise position control is desirable and the cost or complexity of a feedback control system is unwarranted. Here are a few applications where stepper motors are often found:

Pololu’s assortment of stepper motors.