I-drill bit engu-311,2mm (12 1/4″) enezicucu ze-polycrystalline, egcwele ama-nozzle e-hydraulic, enama-blade ama-5, ububanzi bokusika obungu-19 mm, enomzimba wensimbi wokubhoboza amatshe aphakathi nendawo.

I-drill bit engu-311.2mm (12 1/4″) iphumelela kakhulu ekubholeni ngamatshe aphakathi nendawo. Izicucu zayo ze-polycrystalline ziletha ubulukhuni obumangalisayo kanye nokumelana nokuguguleka, okuqinisekisa impilo yenkonzo ende kanye nokusebenza kokusika okuqhubekayo. Ama-nozzle e-hydraulic ahlanza kahle imfucumfucu yamatshe, avimbele ukuvaleka futhi agcine isivinini sokubhoboza. Ngama-blade ama-5, asabalalisa amandla okusika ngokulinganayo, anciphisa ukudlidliza futhi athuthukise ukuzinza. Ububanzi bokusika obungu-19mm buthuthukisa ukususwa kwama-chip, kuyilapho umzimba wensimbi unikeza amandla aphezulu okwakheka ukuze umelane nezimo ezinzima zamatshe. Ngokubambisana, lezi zici zithuthukisa ukusebenza kahle kokubhoboza, zinciphisa isikhathi sokungasebenzi, futhi ziqinisekisa ukusebenza okuthembekile ekwakhekeni kwamatshe aphakathi nendawo.