ABSTRACT
Lugsareusuallyusedforrotatingconnections.Theyareusuallythickerthananordinaryshear joint.Sincelugsarethick,theynormallyhaveadoubleshearconnectiontopreventpinbending (seeFigs.27and28).Ifthelugandclevisarerelativelysoft(e.g.,aluminum)comparedto thepin,theymayalsohavebushingsinstalledforwearandlubrication.Thelugendisusually semicircular,whichisdesirablefrombothweightandclearanceaspects.
