Category: Products

Backpack Drill Machine | Portable Diamond Core Drill Rig - YG Machinery Do not back-drill when tripping, and do not immediately shut down and stop drilling suddenly, but a trip at a uniform and slow speed. Because our drilling rig is 1,920 drills per minute, a sudden stop of drilling at such a high speed will cause sticking and drilling (drilling is generally between 800-2000 rpm).