On a tape recorder, the motor that is used, to supply take-up tension to the tape on the take-up reel and for fast forward operation.
"Thanks for the great service and fast turn around time, You transfered an old 8 track tape of my brothers band from the 1970's to CD's. It so neat to hear those songs again I haven't heard them for 30 years. I cant wait to send a copy to my brother. Great Job I highly recommend your services."