The Xs GT system is especially designed for piling, micro piling, anchor installation and other civil engineering applications.
Overburden can be cased and sub-casing anchor sockets drilled in the bedrock in one operation
with the same driver-bit, without removing the drill string. The driver as four (4) recesses portion which transfers impact directly to the crown, giving the necessary force to drill and drive down casing. The drilling end of the driver bit is slightly bigger than the core itself, to provide clearance when drilling in bedrock.
The driver bit is the device that transfers impact and rotation to the crown bit for drilling. The driver bit locks into four flats on the casing crown and they act together as a standard drill bit, both the driver bit and the crown have tungsten carbide buttons. The Driver bit drills with the crown advancing the casing to the desired depth. Afterwards the same driver bit can be used for sub-casing drilling.
The crown bit is a two-piece unit permanently connected together. The upper part is welded to the casing, and the lower part, which has Tungsten Carbide is free to rotate with the driver bit.
- Impact zone: Direct energy from the hammer is transferred to the crown bit through four (4) recesses formed by the locking surface.
- Evacuation: Two (2) big air holes are drilled in the face of the bit (drilling end). Those holes are directly connected to two (2) large flushing air ways, this transfer the drill debris from the drilling end of the driver up in the casing. To help the evacuation of debris, two (2) smaller air holes in the flushing air ways, gives the cuttings some velocity.