Boleng bo phophomang ba polyurethanemochini o nang le khatello e phahameng ea phoofoke tekanyetso ea ho khetholla ts'ebetso ea mochini o phoroselang.Boleng bo phophomang ba mochini o phophomang bo lokela ho ahloloa ho latela lintlha tse tharo tse latelang: botle ba foam, ho tšoana ha foam le ho tsoa mali a foam.Palo ea ho tsoa ha foam e bolela palo ea tharollo ea mokelikeli o phophomang e hlahisoang ka mor'a hore lefulo le phatlohe.Ha foam e tsoa hanyane 'me ha foam e na le metsi a seng makae, lintho tse phophomang tsa polyurethane li tla be li le betere.

Mabaka a ka sehloohong a khatello e sa tloaelehang eamochini oa polyurethane o nang le khatello e phahameng ea mafurake tse latelang:
1. Likarolo tsa li-hydraulic tsa potoloho ea hydraulic (tse kang li-cylinders le li-valve tsa ho laola) li apere haholo kapa likarolo tsa ho tiisa li senyehile, e leng se etsang hore ho be le ho tsoa ka hare ho potoloho ea hydraulic.
2. Ho na le ho tsoa ka ntle ho potoloho ea oli ea tsamaiso, mohlala, pipe ea oli e robehile, 'me sebopeho se pakeng tsa phala ea oli le likarolo tsa hydraulic se tsoa ka botebo.
3. Sesepa sa oli se koetsoe ke litšila ka har'a oli, mocheso oa oli o phahame haholo, pipe ea oli ea hydraulic pump e tšesaane haholo, joalo-joalo, kahoo oli e nkiloeng ke pompo ea hydraulic ha e lekane kapa e kenngoa.
4. Litlhaloso tsa motlakase oa hydraulic pump drive ha li finyelle litlhoko, tse kang tlhahiso le lebelo la mochine oa mochine o entsoeng ka seretse le ho tsamaisoa ha motlakase.