This hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 500 mA at 10 V, allowing for a holding torque of 1000 g-cm (14 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. It can be controlled by a pair of suitable H-bridges (one for each coil), but we recommend using a bipolar stepper motor driver. The 5mm universal mounting hub can be used to mount objects on the stepper motor’s 5mm-diameter output shaft. Specifications Size: 35 mm square x 28 mm, not including the shaft (NEMA 14) Weight: 140 g (5 oz) Shaft diameter: 5 mm Steps per revolution: 200 Current rating: 500 mA per coil Voltage rating: 10 V Resistance: 20 Ohm per coil Holding torque: 1000 g-cm (14 oz-in) Inductance: 13.5 mH per coil Lead length: 12 in Dimensions The following diagram shows the stepper motor dimensions in mm. The dimension labeled “length” is 28 mm. The output shaft has a length of 21 mm and a diameter of 5 mm. Though not shown in the diagram, the output is a D-shaft with a section that is flattened by 0.5 mm. 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: Printers CNC machines 3D printer/prototyping machines Laser cutters Pick and place machines Linear actuators Hard drives
