KNSH crowns

Pin drill bits of the KNSH series The purpose of the pin drill bit of the KNSH series is to carry out impact-rotary drilling of a hole using a portable hammer drill. The impact energy indicator can reach up to 90 Joules. The following forms of inserts can be used in the pin drill bit of the KNSh series: hemispherical inserts - used to carry out work in hard and significantly hard rock (170-300 MPa); parabolic inserts - used for work in medium-hard and strong rocks (100-170 MPa); ballistic inserts - used for work in soft, non-abrasive rock (70-140 MPa). The shape of the crowns and their number, as well as the location of the carbide insert, largely depend on the strength of the rock and its degree of abrasiveness. When making a crown, special attention is paid to its strength, durability and wear. These indicators will further ensure high drilling speeds and increase the suitability of the bit, which in turn can reduce financial costs. The crown is mounted to the rod using a conical connection. Core type Size Height, mm Rod diameter, mm Drilling diameter, mm Weight, kg Price UAH. Price, Wholesale UAH. KNSH 30x22 68 22/25 30 0.22 145 130.50 KNSH 32x22 68 22/25 32 0.22 140 126 KNSH 36x22 70 22/25 36 0.35 160 144 KNSH 40x25 75 22/25 40 0.40 170 153 KNSh 43x25 75 22/25 43 0.42 170 153