An external rotor comprises {HEAD ~ an annular case} within which is the laminated stack forming {TAIL ~ the motor drive members} and end members at each side of the stack 
An external rotor comprises { HEAD ~ an annular case } within which is the laminated stack forming { TAIL ~ the motor drive members } and end members at each side of the stack
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH