Crown boring shtyrevy KNSh130

Drill bits are intended for destruction of rocks when drilling explosive wells by submersible pneumatic impact tools. Spherical connection of a drill bit with a pneumatic impact tool, increasing reliability and durability of the connection, provides fast change of the tool. Edges of crowns are reinforced by a firm alloy.
The drill bit has the rational form of the case, channels for a supply of the fulfilled air to a face of wells, the x-shaped provision of rock cutting edges. Crowns differ as a crown: lezviyny and shtyrevy; as connection with a pneumatic impact tool: bayonetny, shlitsevy, shponochny, vents with a spline.