Manufacturer genuine parts were supplied.
I have measured my motor during a print because they are getting really hot. All motors are between 40°C and 55°C, is this critical? Some Nema17 motors have a critical temperature of around 80-100°C so what do you think? The motors of my Geeetech Prusa I3 Pro B never get so hot, but they don't have to hold the weight in position all the time.