Stepper motor Step angle: 1.8 ± 5% degrees / step

42BYGH47-401A

RepRap 42 two-phase four-wire stepper motor - the most important power component of the -3D printer

Simply speaking, a stepper motor is a motor that precisely controls the amount of rotation by a current pulse, which is supplied by a stepper motor drive unit. The so-called "step" is also a current pulse, each "step" is a fixed length, so the stepper motor is suitable for applications that require precise positioning. There are two types of stepping motors: bipolar and unipolar. RepRap is basically available in two ways. We only need to pay attention to the following main technical parameters, so we will not choose the wrong motor.

Specifications:

Weight: 0.4kg 2 phase
Step angle: 1.8 ± 5% degrees / step
Voltage: 12V
current: 1.2A / phase
Resistance: 10.0 ± 10% Ω / phase
Inductance: 20 ± 20% MH / phase
Lead style: AWG26 UL1007 with 4 leads
Hold torque: 48N.cm Sensitive
Braking torque: 2.6N.cm maximum
Insulation cllass: B
rotor torque: 68g.cm2