The technical and detailed specifications of the motor are as follows:

​## Electrical and mechanical specifications

​Motor type: NEMA 17 stepper motor, bipolar (two-phase)

​Number of wires: 4 wires

​Step Angle: 1.8^circ degrees (i.e. 200 steps for one full revolution)

​Rated current: 1.5 amps per phase

​Holding torque: about 0.4 to 0.45 Nm (or 4.2 kgf cm), which is a standard and very good torque for mid-range work.

​Body length: 40 mm (excluding shaft)

​Resistance per phase: about 1.5 to 1.6 ohms

Model 17HDB4011 is one of the high-quality and very common stepper motors on the market, which is usually used in 3D printers and small CNCs.

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​Very important tip for setup:

You must adjust the current of your driver (such as A4988 or DRV8825 or TMC2209) (via potentiometer on the driver or Vref). Since the rated current of this motor is 1.5 amps, it is better to set the driver current to 1.2 to 1.3 amps so that the motor does not overheat and has a long life.