JINKE JK 930 quarry DTH drilling rig. Set up for the common quarry pattern: 115 mm holes, 30 m deep, on a bench that moves every few days. It is the same JK 930 chassis, tuned so the aggregate yard gets a clean, straight hole and predictable fragmentation. For the quarry bench 115 mm pattern, 90-130 mm range. Matched to the hole size most limestone and granite quarries run, so the fragmentation suits the crusher. 30 m single pass. Fewer rod joins per hole, which keeps the
