Product description
Process equipment
Standard version - Uncased drilling
50 Drilling tool
51 Lifting device
52 Rotary drive
53 Shock absorber
54 Kelly driver
55 Kelly bar
56 Kelly guide
57 Rope swivel
Components Function
Lifting device Opens the drilling tool.
Drilling tool Cuts and conveys the drilling debris.
Rotary drive Generates the rotary motion for drilling. The main gear is
driven by hydraulic motors via the planetary gear.
Shock absorber Dampens axial shocks to the Kelly bar.
Kelly guide Guides the Kelly bar along the mast at its upper end.
Kelly driver Transmits the rotary drive torque to the Kelly bar.
Kelly bar (Kelly) Transmits the rotary drive torque directly to the drilling tool.
Its length determines the maximum drilling depth.
Rope swivel Prevents twisting of the main rope.
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