JINKE JK 930 crawler DTH drilling rig. This is the rig open-pit mines and quarries keep on the bench for blast hole patterns, where the holes run 90-165 mm and the machine has to move between levels without a crane. The JK 930 drives a 5 inch hammer on a 2.4 MPa air package and stays on the pattern. Why it stays on the pattern 5 inch DTH hammer on 2.4 MPa air. Penetrates granite, basalt and limestone fast, and the holes stay straight so your powder factor does not drift. 90
