Ja, ja damals eben .... nur ganz 10kg waren es doch nicht mit dem Lesekopf ...

Really old 5.25" floppy drives contain a nice motor used to move the reading head back and forth - it's a lot more useful than the one for turning the disc which was sometimes a DC motor on older ones and tangled into the circuit board on later models.

http://www.c-realevents.demon.co.uk/.../stepmotor.htm