ZJF55S bolting rig is equipped with standard 4 cylinders 60 KW + 55 KW Yuchai engine, with dual power pack. 76 mm optional screw type drill pipes as standard configuration, there are diesel engine & electric motor power pack for choosing.

Large torque dual motor rotary head, greatly increase the rig torque （ 4,600 N.m ）, ensuring larger hole diameter. The rig can be widely used in foundation bolting, pulp canal drilling, & large hole screw type drill pipe drilling.

Standard rotation dual-speed shifting valve, be very convenient, for fulfilling the special work of different torque & speed.

Standard configuration of piston tramming motor, being more powerful when climbing the slope & with better quality.

I: Standard configuration of plunger piston tramming motor, with better climbility & quality.

II: Large torque dual motor rotary head with high / low speed shifting device, for larger hole bolting, pulp canal drilling & DTH drilling.

III: Standard configuration of rotation dual-speed shifting valve, with convenient operation, fulfilling the special working of different torque & speed.

IV: Standard configuration of dual-power mixed model, convenient shifting between diesel engine power & electric power.