XCMG XR258E Rotary Drilling Rig Product Introduction

The XR258E rotary drilling rig consists of a tracked chassis platform and a dedicated drilling operation module. As a reliable piece of foundation construction machinery, it is widely applied in pile foundation engineering for ports, railway bridges, high-rise buildings and other key infrastructure projects, performing well in various borehole construction tasks.

This model is compatible with both telescopic friction Kelly bars and interlocking Kelly bars, delivering strong adaptability to different geological conditions and construction requirements, ensuring stable and efficient performance in diverse foundation works.

XCMG XR258E Advantage Introductions

1.With the special hydraulic telescopic crawler chassis (TDP series) of rotary drill rig and large diameter slewing bearing, it meets strong stability and easy transportation.

2.With the electronically controlled and turbocharged engine of Cummins, which is powerful and emissions meet Euro Ⅲ  standards.

3.With the hydraulic pressure system adopted threshold power control and negative flow control,the system acquired high efficiency and higher energy conservation.

4.With the single rope main winch, it efficiently solves the problem of wire rope wear, and improves the service life of wire rope; a detection device of drilling depth on the main winch, and single rope makes deep inspection more accuracy.

5.Main winch bottom protection function prevents the main winch wire rope in slack .

6.Optional function with centralized lubrication system, which makes maintenance more convenient.

7.Selection of a variety of specifications for kelly-bar,  meeting the efficient construction of different strata.

XCMG XR258E Technical features

1、Undercarriage

XR258E equipped with dedicated drilling rig chassis of TDP series， has a strong stability. The heavy duty retractable undercarriage is easy for transportation and walking, controlled to extend and retract the crawlers by fully hydraulic.

2、 Engine system

Adopting Cummins QSL engine, rated power is 242 KW / 2100 rpm, is EuroⅢ turbocharged and inter-cooled type engine.

3、 Hydraulic system

With the hydraulic pressure system adopted threshold power control and negative flow control, the system acquired high efficiency and higher energy conservation.

4、Cab

The FOPS cabin is comfortable and soundproof, proved with adjustable seat, air conditioner and heater, With floodlight inside and outside. Control panel is designed with all meters and operating joystick located in favorable position to the operator；The colorful display with more functions is in the control panel.

5、Winch

Single row rope for main winch efficiently solves the problem of wire rope wear, and improves the service life of wire rope.

Main winch

Auxiliary winch

6、 Mast

With the parallelogram mechanism of own patent, this jig allows wider operating area, the highly strengthened box-type steel structure design makes the mast with highly-rigidity and intensity, therefore the drilling accuracy is heightened. The lubrication-free bearings are equipped in the flexible articulation joints, and can work freely. Support cylinder can be selected.

7、Rotary drive

Rotary drive is controlled by a pressurized cylinder for pressuring and lifting, it is equipped with drilling drive hydraulic motor, which top has a spring shock absorber. It is equipped with appropriate friction type and inner lock type drill pipe driver set, optional casing drive connection, convenient construction. Standard drive set of 406 drill bar for the removable type key.

8、Kelly bar

The Kelly bar of XR258E rotary drilling rig is optional.

9、Drilling tools

A selection of long screw auger and short screw auger 、general drilling bucket, sand fishing drilling bucket, and cylinder rock drilling tool；

10、Electrical system

We have developed the advanced intelligent control technology, CANBUS technology and virtual instrument technology, human-computer interface can ensure simple and reliable operation, providing with mast verticality and depth finder electronic indicators, automatic real-time drilling depth monitor, automatic monitor of operation malfunction, in/out signal online adjustment and mast、amplitude、main/auxiliary winch misoperation rotection, filter、maintain warning, and so on. PLC control system may automatic/manual adjust mast verticality, it is replayed in picture of“十”and number on the display.

Main Technical Data

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