Stepper Motor: Bipolar, 200 Steps/Rev, 28x45mm, 4.5V, 670mA

Overview

This hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 670 mA at 4.5 V, allowing for a holding torque of 950 g-cm (13 oz-in).The motor has four color-coded wires terminated with bare leads.

Specifications

• Size: 28 mm square x 45 mm (not including the shaft)
• Weight: 140 g (5 oz)
• Shaft diameter: 5 mm
• Current rating: 670 mA per coil
• Voltage rating: 4.5 V
• Lead length: 12 in
• Resistance: 6.8 Ohm per coil
• Holding torque: 950 g-cm (13 oz-in)
• Steps per revolution: 200

Dimensions

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “Length” is 45 mm. The output shaft has a length of 20 mm and a diameter of 5 mm.

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:

• Printers
• CNC machines
• 3D printer/prototyping machines
• Laser cutters
• Pick and place machines
• Linear actuators
• Hard drives

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