YT-400-type wells, engineering drill a single hoist main group, to enhance capacity, geotechnical dual, large module, hyperboloid dial to ensure smooth running rig, torque, long life; YT-400-type wells and engineering drilling rig suitable for high-rise buildings, public railway bridge, geological mine, ports, dams and deep wells based works. 
 Technical parameters 
 Drilling depth (m) 400 80 
 Hole diameter (mm) 500 1500 
 Inner diameter of turntable (mm) 500 
 Wheel speed (forward and reverse) (r / min) 21.5; 38.4; 61 
 Rated output torque turntable (KN.m) 15 
 Hoist lifting capacity (single rope) (KN) 40 
 Carrying capacity of the tap (KN) 240 
 Host supporting power (KW) 30 
 Work status (mm) according to user requirements can be equipped with A13, A15, A18 shelf 
 Weight (kg) 3190