Kubowola bwino fakitale IADC126 17 1/2 mainchesi (444.5mm)

Minofu ya tricone ya m'manoZomwe zimatchedwanso zitsulo zachitsulo), zimapangidwa ndi zida zamphamvu kwambiri zochokera kwa opanga ma tricone cone bit.Sitimangoyesa kukonza kukana kwa mano, komanso kumapangitsanso bwino kumeta ubweya komanso kutsetsereka mtunda wa kubowola.Tsopano, chowonjezera ichi chingagwiritsidwe ntchito bwino muumisiri wamakono wobowola, womwe sungathe kuchepetsa kuthekera kwa mano osweka, komanso kukhathamiritsa makonzedwe a chiwerengero cha mano ndi chiwerengero cha mano, ndikugwiritsa ntchito mokwanira ntchito ya mano. mphero ya mano.

Popanga kachulukidwe kakang'ono, imagwiritsa ntchito bowo lamkati lopangidwa ndi antifriction alloy, lomwe limatha kukulitsa luso la kuluma mpaka kumlingo wina, komanso kuyikapo kuti lichepetse kuthamanga kwa kusiyana ndikuletsa matope kulowa mu dongosolo lopaka mafuta. chipangizo.Kuthekera ndi moyo wautumiki wa makina osindikizira a chisindikizo chobowola amatha kusintha kwambiri.