Today Discussion of rotary drilling rig to mention the use of lead and precautions. Mention the main lead-up to withstand heavy-duty device, in addition to the elimination of the torque output of the power head, protecting the primary volume rope. All about lifting parts are more dangerous, unintended consequences occur once unthinkable. Mention by the joint lead is lower joints, intermediate, pin, angular contact ball bearing components. Mention the work cited in 12-16 hours after injection hole should unscrew the plug, put the lead into the lithium grease is injected until the position shown in A overflow with fresh grease. When installing the bearings, the bottom piece bearing "face" down "back" up, several other pieces of "face" up "back" down. Precautions include references should always check the maintenance, to ensure flexible rotation. Once the primer is catching not to mention turn may lead rope is broken, causing a major accident. German deep drilling Xinghua Machinery Co., Ltd. is specialized in the production of auger drill, auger drill, mention lead the enterprise, honesty is the company's purpose, endless pursuit of excellence is the goal. Dedication to customer service is the company's consistent policy. Only by creating value for customers. In order to create value for themselves.