Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 57×76mm, 4.5V, 2 A/Phase

This high-torque hybrid stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 2 A at 4.5 V, allowing for a holding torque of 14 kg-cm (190 oz-in). The motor has six color-coded wires terminated with bare leads that allow it to be controlled by both unipolar and bipolar stepper motor drivers. When used with a unipolar stepper motor driver, all six leads are used. When used with a bipolar stepper motor driver, the center-tap yellow and white wires can be left disconnected (the red-blue pair gives access to one coil and the black-green pair gives access to the other coil). We recommend using it as a bipolar stepper motor.

Specifications

• Size: 56.4 mm square × 76 mm, not including the shaft (NEMA 23)
• Weight: 1 kg (35 oz)
• Shaft diameter: 1/4″ (6.35 mm) “D”
• Steps per revolution: 200
• Current rating: 2 A per coil
• Voltage rating: 4.5 V
• Resistance: 2.3 Ohm per coil
• Holding torque: 14 kg-cm (190 oz-in)
• Inductance: 3.6 mH per coil
• Lead length: 12 in

More specifications are available in the datasheet (39k pdf).

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