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XR320D Rotary Drilling Rig

1、It adopts dedicated hydraulic retractable crawler chassis and heavy slewing bearing and has high stability.

2、It adopts the luffing mechanism of large triangle form to ensure the stability of construction of big holes and deep piles in hard formation.

3、It adopts the front-located single-rope main winch structure to greatly prolong the service life of steel wire rope and lower the use cost.

4、It adopts the imported Cummins turbo-supercharged engine with three gears. Users can select corresponding gears according to different working conditions to achieve the effect of a drilling rig driven by three engines.

5、Normal mode and entering-rock mode of Rotary drive are available for operation in soil and rock to improve the construction efficiency.

6、Winch-pressurized and sleeve-driven functions are available for selection to satisfy various needs of the users.

7、It is equipped with a centralized lubrication system as standard configuration; maintenance is easy.


Description

Unit

Parameter value



Max. drilling diameter


mm


2500




Max. drilling depth

m

90


Allowable luffing scope (from center of drill rod to slewing center)

mm

4100~4400


Drilling rig dimension in working condition (L × W × H)

mm

10480×4800×25155


Drilling rig dimension in transport condition (L × W × H)

mm

16550×3500×3500


Weight of overall unit (standard configuration, excluding drilling tool)

t

92.8


Engine

Model


CUMMINS  QSM11-C400


Rated power/speed

kW

298/(2100r/min)


Hydraulic system

Max. working pressure of main pump

Mpa

35


Max. working pressure of auxiliary pump

Mpa

30


Rotary drive

Max. torque

kN •m

320


Rotational speed

r/min

5.5~21


Crowd  cylinder

Max. Pushing force

kN

250


Max. Pulling force

kN

250


Max.stroke

mm

6000



Crowd  winch

Max. Pushing force

kN

330


Max. Pulling force

kN

350


Max.stroke

mm

16000


Main winch

Max.pulling force

kN

280


Max. single-rope speed

m/min

75


Auxiliary winch

Max.pulling force

kN

100


Drilling mast

Left/right inclination of mast

°

4/4


Front/back inclination of mast

°

5/15


Crawler

Width of crawler plate

mm

800


External width of crawler (min.-max.)

mm

3500~4800


Center distance between two longitudinal wheels of crawler

mm

5175


Average ground pressure

kPa

122



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