Malingana ndi mtundu wa ntchito ndi kukula ndi mtundu wa kubala, njira zoyenera zoyikira (makina kapena hydraulic) ndi makina amasankhidwa.Kuzungulira kosalala kumachokera kumalo ogwiritsira ntchito, miyeso yofanana, liwiro, mikhalidwe, ndi zina zotero.Kuchuluka kwa kubwereza ndi chitetezo kumachokera ku kugwiritsidwa ntchito koyambirira kwa ntchito zambiri ndi malo ogwirira ntchito a malo aliwonse.Kuwonongeka kolondola, kuyika bwino ndikusonkhanitsa, kukhalabe osalala komanso osalala, kuyang'anira mawonekedwe olondola, chitetezo chanthawi yake, komanso maphunziro angwiro a anthu ogwira ntchito, kutalika kwa moyo ndi ntchito za malo opitilira mayendedwe ang'onoang'ono olumikizana ndi mpira ndizosayerekezeka.

Mipira yolumikizana ndi ma thrust nthawi zambiri imakhala zigawo zikuluzikulu zamapampu ndi makhazikitsidwe ena.Ngakhale kuti zonyamula zamtundu woyamba ndizodalirika kwambiri, ziyenera kuperekedwa chidwi kwambiri kuti zitsimikizire kuti zimakhala ndi moyo wautali kwambiri.Kuwunika kwa dipatimentiyi kwa malamulowa kudzazindikira msanga zomwe zingachitike ndipo zidzalepheretsa kuwonekera kwa zida zosayembekezereka zoyimitsa zochitikazo, kupangitsa kuti pulogalamu yogwiritsira ntchito ikwaniritsidwe, ndikuwongolera mphamvu yogwiritsira ntchito komanso kuchuluka kwa msonkhano.Chotsatira chake, kugwedezeka kowonjezereka ndi mikangano kungapangitse kwambiri kugwiritsira ntchito mphamvu ndi kulowa pangozi mwamsanga.

Osasakaniza mafuta osagwirizana.Ngati mafuta awiri osagwirizana asakanizidwa, kugwirizanako nthawi zambiri kumafewetsa ndipo pamapeto pake maberedwe amatha kuwonongeka chifukwa cha kutayika kwa mafuta.Ngati simukudziwa kuti ndi girisi iti yomwe idagwiritsidwa ntchito poyambira mpira, muyenera kaye kuchotsa mafuta akale mkati ndi kunja kwake musanawonjezere mafuta atsopano.

Makamaka malinga ndi kutentha ndi zikhalidwe ntchito: mafuta akhoza m'gulu malinga ndi kololeka ntchito kutentha.Kusasinthika ndi mafuta mphamvu ya mafuta amakhudzidwa ndi ntchito kutentha.Kukankha ngodya kukhudzana mpira mayendedwe ntchito pa kutentha zina ayenera kusankhidwa pa kutentha yomweyo.Mafuta okhala ndi kusasinthika koyenera komanso mafuta abwino.Mafuta amapangidwa m'magawo osiyanasiyana a kutentha ndipo amatha kugawidwa m'matenthedwe otsika, kutentha kwapakati komanso kutentha kwambiri.Pa nthawi yomweyi, pali mtundu wa mafuta wotchedwa extrusion resistance kapena extrusion resistance ndi kuwonjezera kwa molybdenum disulfide, ndipo panthawi imodzimodziyo, zowonjezera zimawonjezeredwa kuti zilimbikitse mphamvu ya filimu yopangira mafuta.

Ngati mafuta asankhidwa molakwika, njira zonse zopewera kubereka ndizopanda pake.Ndikofunikira kusankha mafuta omwe maziko ake amakhuthala amafuta amapereka mafuta okwanira pa kutentha kwa ntchito.Kukhuthala kumakhudzidwa makamaka ndi kutentha, ndipo kumasiyana ndi kutentha.Imakwera ndi kutsika, ndipo pamene kutentha kwatsika, imakwera.Choncho, m'pofunika kudziwa mamasukidwe akayendedwe a mafuta m'munsi pa kutentha ntchito.Opanga makina nthawi zambiri amatchula za kugwiritsa ntchito mafuta ena, koma mafuta ambiri okhazikika amapezeka m'magwiritsidwe osiyanasiyana.

Zotsatirazi ndi zinthu zingapo zofunika posankha mafuta: mtundu wamakina;mtundu ndi kukula kwa kukankha ang'ono kukhudzana mpira kubala;kutentha kwa ntchito;chikhalidwe katundu katundu;liwiro la liwiro;malo ogwirira ntchito, monga kugwedezeka ndi kuwongolera kwa shaft yayikulu ndi yopingasa kapena yopingasa;kuziziritsa;Kusindikiza zotsatira;zotumphukira chilengedwe