Mafotokozedwe Akatundu:
Mabatani obowola ulusi wa Jcdrill amapangidwa ndi zitsulo zapamwamba kwambiri za alloy ndi tungsten carbides.Kupyolera mu chithandizo cha kutentha, zida zathu zobowola zimakhala zolimba kuti zigwirizane ndi zofuna zobowola miyala ndipo zimataya mphamvu zochepa pobowola miyala.Kupatula apo, titha kupanga makonda obowola mabatani a ulusi molingana ndi momwe angabowole mosiyanasiyana, ndipo tizibowolo ta makonda timagwira ntchito pobowola mwala wofewa, mwala wotayirira komanso mwala wolimba.
Rock Drill Thread Button Bits ndi yoyenera R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, T60 ndodo zobowola miyala.Ili ndi masamba ambiri.Amagwiritsidwa ntchito kwambiri pobowola miyala yolimba (f=8~18).
1) Kulumikizana kwa ulusi: R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, GT60
2) Aloyi zitsulo: 42CrMo
3) Malangizo oyenerera a carbide:YK05
4) Ukadaulo: kukanikiza otentha kapena kuwotcherera
Pamaso pa Official Order, chonde tsimikizirani zomwe zili pansipa:
(1) Mtundu wa Ulusi
(2) Standard kapena Retrac
(3) Mawonekedwe a batani laling'ono (mawonekedwe ansonga) --Spherical kapena Ballistic
(4) Maonekedwe a nkhope pang'ono--Drop Center, Flat Face, Convex, Concave, etc ...