SHOULDER PROTECTED DRILLING ASSEMBLY
A drilling assembly for percussive drilling, comprising at least two of a drill bit, a drill rod and a guide adapter; wherein the peripheral surface of the shoulder on the drill rod is at least partially encased in both radial and axial directions inside the mounting sleeve of the drill bit or the mounting sleeve of the guide adapter; and / or the peripheral surface of the shoulder on the guide adapter is at least partially encased in both radial and axial directions inside the mounting sleeve of the drill bit.