Indandatho yokugcina ihlukaniswe yaba indandatho yokugcina imbobo kanye nendandatho egcina i-shaft, enomphumela okhawulela futhi engavimbela ezinye izingxenye ukuthi zihambe nge-axially.Inqubo yokwakha ivame ukusebenzisa i-sheet metal punching, nesigaba sokusebenza esicolile kanye "nokuxhumana okuqondile" ngemva kokuhlanganiswa.Amanye amamodeli anosayizi omkhulu enziwa ngokusonteka ngocingo nokubhoboza izinto ezidingekayo, ezinesiphambano esivamile esingunxande kanye "nokuxhumana okungaphezulu" ngemva kokuhlanganiswa.