closeup of electric motor rotor with worm gear, ball bearing and inductors on gray background

rotor electric motor engine inductor coil closeup ball bearing electrical machine worm gear electromagnetic copper wire electronic winding steel stator detail transmission macro stepper ferromagnetic sheet magnet induction radial metal bushing mechanism electro component equipment shaft pinion inside open electricity energy power engineering electrotechnics electromechanics mechanical industry technology repair gray background ewaste recycling orange single row inductance rotation magnetic field wrapped stepping round case screw drive disassembled device industrial electrotechnology spare service design inductors coils sheets