Technical characteristics of Atlas Copco's hydraulic drifters

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Technical characteristics of Atlas Copco's hydraulic drifters

(1) double-sided oil return;

(2) slender piston, small impact stress wave, long duration, and long service lives of piston and drilling tool is ;

(3) Equipped with a buffering and absorbing device for the reverse impact from drill rods, which improves service lives of drifters and drilling tools;

(4) Equipped with a 2-speed or 3-speed stroke adjuster;

(5) Some are equipped with an extractor for solving stuck problem;

(6) The impact pressure and the rotation pressure are relatively high. The impact pressure is normally 20-25MPa, most of which are 23MPa; the rotation pressure is normally 20-25MPa, most of which are 20MPa;

(7) The impact frequency is relatively high and up to 102 Hz, most of which are 60 Hz.

Drill Rigs and Machinery of Epiroc （一）

Models and applications of Atlas Copco’s hydraulic drifters