Iseti yegiya yecylindrical, edla ngokubizwa ngokuba “ziigiya,” iqulathe iigiya ezimbini okanye ngaphezulu ezisilinda ezinamazinyo adibanayo ukuhambisa intshukumo kunye namandla phakathi kweeshafti ezijikelezayo. Ezi giya zizinto ezibalulekileyo kwiinkqubo ezahlukeneyo zoomatshini, kubandakanya iibhokisi zegiya, ukuhanjiswa kweemoto, oomatshini bemizi-mveliso, nokunye.
Iisethi zegiya ze-Cylindrical zinezinto ezininzi kwaye ziyimfuneko kuluhlu olubanzi lweenkqubo zoomatshini, ukubonelela ngokusasazwa kwamandla okusebenzayo kunye nokulawula ukunyakaza kwizicelo ezingenakubalwa.