Qaab dhismeedka mashiinkan oo ah nooca saddex rululalayaasha ah, rollerka oo ku jira laba summemetari oo dhexeBooska rollerka hoostiisa waxa uu si toosan u dhex marayaa gooryaanka dunta iyo hooyada xariirta ah, Labada hooseRollers-ku waxay ku wareegaan wax soo saarka gear-yaraha iyo rollers-ka hoose ee Gear mesh, si loo helo wareegtadaXaashida duuban. Khasaaraha mashiinka ayaa ah in foorarsiga saxanka dhamaadka uu u baahan yahay isticmaalka aaladaha kale.