Nanjing Construction Machinery Co.,Ltd.

■ Performance Characteristics(XR120A)
■ XR120A Rotary drilling rig is ready to operate without any service crane support as it is supplied with a parallelogram support system that allows the unit to selferect.
■ XR120A Rotary drilling rig is equipped with expert chassis ， it is high working stability 。 The heavy duty retractable undercarriage is easy transportation and walking, it is controlled to extend and retract the crawlers by fully hydraulic.
■ XR120A base unit is fitted with: diesel engine ， hydraulic circuit made with main steel tube, high pressure joints and jic type fitting ， hydraulic distributors ， hydraulic oil tank ， fuel tank ， hydraulic filters and air filter ， hydraulic pump. The oil cooling system has been specially designed to work at ever outside temperatures.
■ XR120A Rotary drilling rig base frame is designed to house high capacity hydraulic main winch and auxiliary winch is mounted in triangular framing , operation easily control the speed of aiguille is the same as the steel wire line. The main winch is also provided with a controlled freefall hydraulic system for automatic follow during the drilling operation, it also has an auto-tightening function in the quick freefall.
■ Mast is matched of a parallelogram support system with hydraulic oil tank and safety valve. it contains mast extend section, goose-liked head with block, dismountable down-extended section, adjustable system for mast slope.

Main Technical Specification

Model	XR120A
Engine Model	D6114ZG3B
Engine rated power/rev	140kw/2200rpm
Max.output torque of rotary drive	120kN.m
Max.drilling depth	50m
Max.drilling diameter	1500mm
Main winch Pulling force	135kN
Working weight	41.5T
Working Dimension(L×W×H)	7310×4000/4100×17650
Transportation Dimension (L×W×H)	12800×2995/3050×3200