Iiyunithi ezincinci ze-hydraulic zizinto ezibalulekileyo zeenkqubo zamandla ulwelo ezisetyenziswa kwizicelo ezahlukeneyo zeshishini. Ezi yunithi zidibeneyo zenzelwe ukuvelisa, ukulawula, kunye nokuhambisa amandla e-hydraulic ngokuhamba kolwelo, ukwenza ukuba kudityaniswe kumatshini amaninzi kunye nezixhobo. Izinto ezahlukahlukeneyo zabo zibavumela ukuba baqeshwe kwimveliso, ekwakhiweni nakwimizi-mveliso yezithuthi, apho kukho mveliso