the telescopic actuator converts a rotation of a rotating shaft of {HEAD ~ a motor} into {TAIL ~ expansion and contraction movements} of an output rod via the planetary reduction gear and the screw feed mechanism 
the telescopic actuator converts a rotation of a rotating shaft of { HEAD ~ a motor } into { TAIL ~ expansion and contraction movements } of an output rod via the planetary reduction gear and the screw feed mechanism
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH