nice quality stepper motor 17hs15-1206s l 39 mm nema17 with 1.8 deg 1.2 a 26 n.cm and unipolar 6 lead wire

since the stepper motor is started by means of its synchronizing torque, the starting frequency is not high in order to avoid out-of-step. in particular, as the power increases, the diameter of the rotor increases, the inertia increases, and the starting frequency and the maximum operating frequency may differ by a factor of ten.