The TR400D-II rotary drilling rig has a rotary head output torque of 420 kNm, and the variable control of the rotary head motor allows you to efficiently handle various working conditions.

　　Main winch motor variable control. The TR400D-II rotary drilling rig can automatically detect the main winch load and automatically adjust the motor displacement according to the load, effectively improving the drilling rig's working efficiency while ensuring construction safety.

　　The TR400D-II rotary drilling rig has a ground contact protection function. When the main winch wire rope is rapidly lowered and the drilling bucket reaches the bottom of the hole, the hydraulic system receives a control signal and automatically cuts off the main winch motor oil circuit, preventing rope tangling caused by excessive lowering of the main winch.

　　The ground-support cylinder design of the TR400D-II rotary drilling rig makes it easy to solve the problem of pulling out the casing.

　　Caterpillar chassis. The TR400D-II rotary drilling rig uses an original imported Caterpillar chassis, whose high stability and high working efficiency ensure the drilling rig can work effortlessly under any conditions.

　　Basic parameters:

　　Maximum output torque (kNm) 　　420

　　Maximum drilling depth (m)　　110

　　Maximum drilling diameter (mm)　　3000

　　Engine manufacturer　　Caterpillar

　　Engine model　　C-15 electronic fuel injection (C-18 Electronic fuel injection)

　　Engine power (kW)　　355

　　Engine speed (rpm)　　1800

　　Chassis model　　CAT374D

　　Chassis total length (mm)　　6860

　　Track width (mm)　　1000

　　Tractive force (kN)　　896

　　Drilling rotation speed (rpm)　　6～21

　　Maximum crowd force (kN) 　440

　　Maximum pull-up force (kN)　　440

　　Crowd system stroke (mm)　　13000

　　Mast left/right tilt angle (°)　　6

　　Mast backward tilt angle (°)　　12

　　Main winch lifting force (first layer) (kN)　　400

　　Main winch rope diameter (mm)　　40

　　Main winch lifting speed (m/min)　　49

　　Auxiliary winch lifting force (first layer) (kN)　　120

　　Auxiliary winch rope diameter (mm)　　20

　　Auxiliary winch lifting speed (m/min)　　72

　　Equipment width in working condition (mm)　　5500

　　Equipment height in working condition (mm)　　28645

　　Equipment length in transport condition (mm)　　8600

　　Equipment width in transport condition (mm)　　3900

　　Equipment height in transport condition (mm)　　3480

　　Standard drill pipe specifications　　Ф580-6*20.3 friction type; Ф580-4*20 locking type

　　Total weight (including drill pipe) (t)　　130

　　Total weight (excluding drill pipe) (t)　　105