Alaabta

Shabaqyada wareegyada silsiladda ah ee hal saf ah oo leh qafis ka kooban rolal-wareegyo cylindrical ah oo u dhexeeya giraan adag oo dibadda iyo gudaha ah. Xirmooyinkani waxay leeyihiin heer sare oo adag, waxay taageeri karaan culeysyada shucaaca culus waxayna ku habboon yihiin xawaaraha sare. Siddooyinka gudaha iyo dibedda ayaa si gaar ah loogu dhejin karaa, samaynta rakibidda iyo ka saarista hab fudud.

Giraanta dibadda ee xadhka silsilada N ma laha feeraha, halka giraanta gudaha ee xajinta cylindrical uu leeyahay laba feeraha go'an. Tani waxay ka dhigan tahay in xamashka cylindrical ee taxanaha N uusan heli karin shafka, sidaas darteed barokaca axial ee usheeda dhexe marka loo eego daaha ayaa la dejin karaa labada dhinac.