Mu iyubakwa ryibyuma no gusana ibyuma, ubwikorezi - imashini zicukura ziteganijwe kwinjira mubyuma neza bitabanje gucukura -. Ukurikije ibipimo ngenderwaho bya JIS, imikorere yo gucukura isuzumwa hashingiwe ku bunini bwa plaque, igihe cyo gucukura, umutwaro ntarengwa, n'umuvuduko ukabije.
Ibizamini byinganda biheruka kwerekana ko guhitamo imyitozo idahwitse akenshi biganisha kumwanya wo gucukura cyane, gushyuha, no kwambara ibikoresho bidashyitse. Ibi ntabwo bigira ingaruka gusa kubikorwa byo kwishyiriraho ahubwo binongera ibyago byo gucika umwitozo mugihe cyo hejuru - gufunga amajwi.
JIS yamakuru yerekana neza ko ingano ya screw zitandukanye hamwe ningingo za drill zagenewe uburebure bwihariye bwibyuma. Kurugero, impapuro zoroshye zisaba umuvuduko wogucukura byihuse no kwinjira neza, mugihe ibyapa binini bisaba inama zingirakamaro kandi bigenzurwa na RPM kugirango bigumane umutekano.
Kubakora naba rwiyemezamirimo bakorera isoko ryamerika yepfo, gusobanukirwa nibi bipimo bifasha kugabanya kunanirwa kwishyiriraho no kuzamura ubwiza bwumushinga. Mugihe ibyuma byubatswe hamwe na sisitemu yo gusakara bikomeje kugenda bihinduka, kubahiriza ibipimo bizwi bizagenda biba ngombwa.
