Main Features of GR300 Motor Grader

GR series of grader are mainly used in large area ground leveling such as road, airport and farmland and the operation of ditching, slope scraping, bulldozing, scarifying and snow-removing. GR graders are the necessary construction machinery in the construction of national defense project, mining construction, urban and rural road, and water conservancy construction and farmland reconstruction.

- The engine adopt PLC controller ,the whole machine reach the standard of EIII let.
- Worm wheel case with overload protection and blade with floating funtion.
- Hydraulic system with load sensing.
- Colorful liquid display dummy meter, electron checking and third level failure warning system.
- The gearbox shift by power of electron and hydraulic , shift mode is shape.
- Wet brake driving axle, double circuit brake
- Ornament cab, cool and warm air-condition can defrost and bring fresh air.
- High intensity and wearable reamer
- The whole machine had past CE .

Main Structure of GR300 Motor Grader

Grader Power system:
The power system of excellent performance adopts CUMMINS and Shangchuai D6114 inline 6 turbocharged diesel engine, and takes the technology of electronical injection and electronic throttle, and features high reliability and fuel economy, low emission, and meets the requirement of European and American Emission Standard.
Transmission system:
The advanced reliable transmission system adopts the electro-hydraulic controlled ZF power-shift gearbox, which makes the operation flexible and convenient. The rear axle is three-way drive axle, and the imported self -locking differential is equipped inside; the final drive in the balance box adopts heavy roller chain, which features reliable and stable transmission, and larger swing angle of the balance box to adapt the tough working condition.
Front wheel drive:
The front wheel hydraulics assists to drive. The front wheel can be set to drive wheel or free wheel according to the working condition, to carry out 6-wheel, 4-wheel and 2-wheel drive. The adoption of front wheel auxiliary drive greatly extends the grading area of the grader especially in the tough condition (for example muddy and snowy ground), which provides more adaptability for the machine. The front wheel auxiliary drive adopts PLC interlocked with rear wheel gear.
Steering system:
The Single cylinder, front axle with large steering angle, and load sensing fully hydraulic steering system can realize the prior operation of the front wheel steering, and assist the frame to steer articulated, which can ensure smaller turning radius and the flexibility.
Operation system:
The comfortable operation system adopts excellent diamond cab, air-conditioning, defrosting and exchanging the air automatically. The system takes ABS adjustable operation panel and adjustable damping seat. The imported instruments and operation levers and ergonomic instrument distribution ensure the comfortable and convenient operation.
Working device:
The blade adopts the adjustable large runner and double slide track setup of Xugong solely owned. The working blade adopts the wear-Resistant materials of high strengthen, and the single cylinder can control the switch of the digging angle and adjust it flexibly according to the hardness of the soil. 
Safety system:
The hydraulic double-circuit travel brake, emergency parking device, hand brake; the brake valve is integrated with the  prefill valve, and the four rear wheels take the hydraulic shoe brake. The braking system adopts the drum brake which is safe and reliable.

Technical Parameter

GR300 Motor Grader
Engine rated power/rev	224kW/2100rpm
Dimension	10500×3100×3550mm
Weight	26000kg
Distribution weight of front wheel	7800kg
Distribution weight of rear wheel	28200kg
Min. clearance	450mm
Front and rear axle clearance	7550 mm
Front and rear axle clearance	1895 mm
Max. steering angle of front wheel	±50°
Max. inclination angle of front wheel	±17°
Max. swing angle	±15°
Frame steering angle	±27°
Min. turning radius	8.2m
Traction	≥140kN
Gradeability	30%
Forward speed	5、8、11、19、23、40 km/h
Reverse speed	5、11、23 km/h
Blade
Max. lifting height	450mm
Max. Digging Depth	500mm
Max.inclination angle	90°
Cutting angle	28°—70°
Rotating angle	360°
Blade length × arc height	4920×787mm
Driving wheel no.	4

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XCMG GR300 Motor Grader with engine power 224kw

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