Hybrid Bipolar 0.9 - 3.0 NM Open LoopNema 23 Stepper Motor

Stepper motors are an alternative option to servo motors for powering most types of CNC machinery. CNC applications include a very wide range of manufacturing processes in which pre-programmed computer software controls the operation and physical movement of machine tools in factory and fabrication settings.

While stepper motors in CNC applications are often seen as a more ‘budget’ alternative to servo motors, this is an oversimplification based on knowledge of older technologies that isn’t always strictly accurate today. Stepper motors are indeed typically less expensive than servo motors for the same power, but modern versions tend to be just as versatile. As a result, stepper motors are far more commonly available, and found in a much wider range of machines and systems, from machine tools to desktop computers and automobiles.

CNC stepper motors also have one very key advantage over servo motors in that they don’t require an encoder. Servo motors are inherently more complex to understand and operate than stepper versions, and part of this complexity is the fact that they include an encoder, which is more prone to failure than most components in the otherwise reliable servo motor. Stepper motors don’t need an encoder, theoretically giving them even greater reliability than servos.

Furthermore, the fact that stepper motors are also brushless (unlike servo motors) means that they won’t require regularly scheduled replacement, provided their bearings remain in good working order.

• Step accuracy: ±5%(synchronizing, no-load)
• Temperature rise: 80 degrees centigrade Max
• Ambient temperature: -10 degrees centigrade —+50 degrees centigrade
• Insulation resistance: 100MΩmin.500VDC
• Voltage resistance: 500VAC for one minute
• Radial runout: 0.06Max.(450g-load)
• Axial runout: 0.08Max.(450g-load)