Ukusebenzisa inqubo yokushisela isifutho, ukubukeka kuhle, indawo engaphezulu ifakwe i-tungsten carbide, ubulukhuni bayo budlula i-HRC60, ukumelana nokugqoka kuthuthukiswa kakhulu, impilo yesevisi iphindwe izikhathi ezingu-3-5 kunezinqubo ezijwayelekile; -ikhwalithi ye-tungsten carbide alloy, ikhwalithi iqinisekisiwe futhi ingenziwa ngokwezifiso, imodeli ephelele yomkhiqizo we-carbonitriding, i-quenching, kanye nokwelashwa okushisayo ukuze kuguqulwe isakhiwo sangaphakathi se-metallographic ukuze ubulukhuni bendawo yokucisha bufinyelele ku-HRC58-HRC62; ukwelashwa kokugqwala, ukuqina kwendawo engacimi ezungeze imbobo efakwayo ≤ HRC32 Zonke izando zithunyelwa nge-counterweight, futhi iphutha eliphelele lesisindo se-shaft ngayinye (iqembu ngalinye) lilawulwa ngokuqinile ngaphakathi kwe-5g, iqinisekisa ngokugcwele ukusetshenziswa kwe-dynamics; ukulinganisa.