The pitch bearing 400, yaw bearing 125, {HEAD ~ main bearing} 130, generator bearing or any other bearing or item requiring lubrication may be considered a component or {TAIL ~ components} of wind turbine 100 
considered
The pitch bearing 400 , yaw bearing 125 , { HEAD ~ main bearing } 130 , generator bearing or any other bearing or item requiring lubrication may be considered a component or { TAIL ~ components } of wind turbine 100
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH