The essence of down-the-hole rock drilling is to make the impactor dive into the hole during the rock drilling process to reduce the energy loss caused by the impact energy transmitted by the drill rod, thereby reducing the impact of the hole depth on the drilling efficiency. The rock drilling equipment for down-the-hole drilling is a DTH drilling machine. The following describes how to maintain the DTH drilling machine. http://www.taiyedrilling.com/air-compressor/All Rights Reserved