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A rock drill shank adapter, as the name suggests, serves as an adapter between the drill shank, which is the primary working end of the drill, and the drill rig. It is designed to withstand the immense forces exerted during drilling operations, translating the rotary motion from the drill rig into percussive energy that breaks down rocks and other hard materials. The adapter acts as a bridge, enhancing the transfer of power while minimizing wear and tear on both the drill bit and the machinery.

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Twist drills, with their helical cutting edges, became the standard for 75mm drill bits in the 1960s. These drills cut by shearing the material and ejecting it through the flutes, resulting in cleaner holes with less material buildup. The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels75mm drill bit.

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