The camshaft 3, wherein {TAIL ~ the bore} includes a third radial inner surface area at the connecting portion that is frictionally engaged with {HEAD ~ the outer surface} of the first shaft 
The camshaft 3 , wherein { TAIL ~ the bore } includes a third radial inner surface area at the connecting portion that is frictionally engaged with { HEAD ~ the outer surface } of the first shaft
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH