ʻO ke kumu hana o ka mīkini paʻi hydraulic he ala hoʻoili e hoʻohana ana i ke kaomi wai e hoʻouna i ka mana a me ka mana.Hoʻokumu ʻia ka mea hydraulic me nā pā hydraulic, hydraulic cylinders, hydraulic control valves a me nā mea kōkua hydraulic.ʻO ka'ōnaehana hoʻoili hydraulic o ka mīkini paʻi hydraulic pahuʻehā me ka mana mana, ka mana mana, ka mana hoʻokō, ka mea kōkua a me ka mea hana.Hoʻohana maʻamau ka mīkini mana i ka ʻaila ʻaila e like me ka mana mana, i hoʻohana nui ʻia i ka extrusion, kulou, kiʻi hohonu o nā pā kila kila a me ke kaomi anu o nā ʻāpana metala.