Core bits are purposed to core recovery in low-abrasive medium rock formations of V-VI category of hardness, interstratified with layers of hard rock formations

Modifications: are reinforced with additional impregnated diamond inserts to increase the tool durability. Distinctive feature: better core removal due to smooth rock cutting with PDC cutters. Flushing holes are carried outside core catchers in order to prevent core damage with drilling fluid.

Dimension acc. to new nomenclature Outside diameter, mm/In Core diameter, mm/In Code IADC Coupling thread Dimension acc. to old nomenclature 95/40 В 88 95 40 S443 Tr73x5Cp(box) BIT-95/40С8.000 95/40 В 98 95 40 S443 Tr73x5Cp(box) BIT-95/40С9.000 120/67 В 913 120 67 S433 МК104х4х1:32Сp(pin) BIT-120/67С9.000 121/50 В 98 121 50 S443 М102х3 BIT-121/50С9.000 138,1/50 В 98 138,1 50 S443 НКТ-102(box) BIT-138,1/50С9.000 138,1/67 В 1210 138,1 67 S442 З-110 BIT-138,1/67С12.000 138,1/80 В 713 138,1 80 S433 МК117Сp(pin) BIT-138,1/80С2.000 138,1/80 В 913 138,1 80 S433 МК117Сp(pin) BIT-138,1/80С9.000 138,1/80 В 1208 138,1 80 S442 МК-117Сp(pin) BIT-138,1/80С12.000 140/80 В 910 140 80 S443 МК119Сp BIT-140/80С92.000 140/80 В 1208 140 80 S442 МК119Сp BIT-140/80С12.000 144/80 В 910 144 80 S443 МК119Сp BIT-144/80С92 144/80 В 1208 144 80 S442 МК119Сp BIT-144/80С12 146/80 В 910 146 80 S442 МК-124 BIT-146/80С92 145,5/80 В 913 145,5 67 S433 З-110 BIT-145,5/67С9.000 145,5/80 В 813 145,5 80 S433 МК-119 BIT-145,5/80С2.000 146/80 В 813 146 80 S433 МК-119 BIT-146/80С2.000 148,5/80 В 1208 148,5 80 S442 МК-119 BIT-148,5/80С12.000 150,8/67 В 913 150,8 67 S433 З-133(box) BIT-150,8/67 С9 151/80 В 910 151 80 S443 МК-119 BIT-151/80С92.000 151/80 В 1208 151 80 S442 МК-119 BIT-151/80С12.000 152,4/67 В 913 152,4 67 S433 З-133(box) BIT-152,4/67С9.000 154/67 В 908 154 67 S443 МК-112Сp(box) BIT-154/67С9.000 154/80 В 910 154 80 S443 МК119Сp BIT-154/80С92.000 154/80 В 1208 154 80 S442 МК119Сp BIT-154/80С12.000 163/67 В 913 163 67 S433 З–133(box) BIT-163/67С9.000 165,1/67 В 913 165,1 67 S433 З–133(box) BIT-165,1/67С9.000 165,1/67 В 913 165,1 67 S433 З–133(box) BIT-165,1/67С92.000 187,3/80 В 913 187,3 80 S433 З–150(box) BIT-187,3/80С9.000 188,9/80 В 813 188,9 80 S433 З–150(box) BIT-188,9/80С.000 188,9/80 В 913 188,9 80 S433 З–150(box) BIT-188,9/80С9.000 188,9/80 В 913 188,9 80 S433 З–150(box) BIT-188,9/80С92.000 212/80 В 813 212 80 S433 З–150(box) BIT-212/80С.000 212/80 В 813 212 80 S433 З–150(box) BIT-212/80С2.000 212/80 В 913 212 80 S433 З–150(box) BIT-212/80С9.000 212/80 В 1208 212 80 S442 З–150(box) BIT-212/80С12.000 212/100 В 813 212 80 S433 З–161 BIT-212/100С.000 212/100 В 913 212 80 S433 МК-180; 3-161 BIT-212/100С9.000 212/100 В 913 212 100 S433 МК-180; З-161 BIT-212/100С92.000 212/100 В 1208 212 100 S442 МК-180; З-161 BIT-212/100С12.000 212,7/80 В 913 212,7 80 S433 З-150(box) BIT-212,7/80С9.000 212,7/80 В 1208 212,7 80 S442 З-150(box) BIT-212,7/80С12.000 212,7/100 В 913 212,7 100 S433 МК-180; З-161 BIT-212,7/100С9.000 212,7/100 В 1208 212,7 100 S442 МК-180; З-161 BIT-212,7/100С12.000 215,9/100 В 813 215,9 100 S433 З-161 BIT-215,9/100С.000 215,9/100 В 913 215,9 100 S433 МК-180; З-161 BIT-215,9/100С92.000 215,9/101,6 В 913 215,9 101,6 S433 МК-180; З-161; МК-162 BIT-215,9/101,6С92 .000 292,9/100 В 913 292,9 100 S433 МК-180; З-161 BIT-292,9/100С9.000 295,3/100 В 1213 295,3 100 S432 МК-189; З-161 BIT-295,3/100 С12.000

• 212,7/100 B 813
• 212,7/80 B 913
• 212,7/100 B 913
• 212,7/80 B 1208