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Table 1 28BYJ-48 stepper motor specifications

From: Continuous distraction osteogenesis device with MAAC controller for mandibular reconstruction applications

  28BYJ-48 stepper motor
Rated voltage 5 V DC Shaft stride angle 0.088°
Number of phases 4 Rotor stride angle 5.625°
Current 4*10−2 A In-traction torque > 34.3*10−3 N m
DC resistance 54 Ω Friction torque 0.12 N m
Phase inductance 3*10−3 H Pull in torque 0.06 N m
Frequency 100 Hz Insulated resistance > 10 MΩ (500 V)
Speed variation ratio 1/64 Noise < 35 dB