Product Details:
Key Features and Applications
Cummins Powertrain and ZF Transmission
The GR3005 is powered by a turbocharged Cummins QSL8.9-C325-30 diesel engine producing 242 kW at 2,100 rpm. Drivetrain power is directed through a ZF electro-hydraulic power shift transmission offering 6 forward speeds (up to 40 km/h) and 3 reverse speeds (up to 23 km/h), allowing operators to match torque and ground speed to heavy grading, high-speed road transit, or rock clearance passes.
Heavy-Duty Overload-Protected Moldboard Drive
Constructed for open-pit mining environments, the working device incorporates a friction-disc worm gearbox with overload protection. When the moldboard encounters immovable obstacles or extreme underground resistance, the clutch slips automatically to protect the blade circle, hydraulic cylinders, and drive components from excessive shock loading.
Load-Sensing Hydraulic System
The hydraulic architecture employs a variable displacement piston pump combined with a load-sensing multi-way valve group. Proportional pilot control valves regulate flow directly in proportion to operating demand, reducing unnecessary hydraulic power losses while delivering smooth, multi-function blade maneuvering during complex shaping and slope cutting.
Mining Drive Axle and Double-Circuit Braking
Traction is transferred through a reinforced heavy-duty mining rear axle, achieving a tractive effort of ≥ 140 kN and a gradeability of ≥ 30%. Operational safety on mine ramps and downhill hauling paths is supported by a double-circuit hydraulic service brake system that distributes braking pressure evenly across the rear wheels.
Protected Operator Cab and Optimized Airflow
The operator cab features integrated ROPS and FOPS structural protection, an adjustable suspension seat, high-output air conditioning, and defrosting vents. The engine compartment is engineered with dedicated airflow routing and sealed radiator perimeters to prevent hot air recirculation and maintain stable cooling performance under continuous high-load operations.
Technical Specifications
| Parameter | Specification |
| Machine Model | GR3005 |
| Equipment Type | Mining Motor Grader |
| Engine Model | Cummins QSL8.9-C325-30 |
| Rated Engine Power | 242 kW (325 HP) |
| Rated Engine Speed | 2,100 rpm |
| Operating Weight (Standard) | 28,000 kg |
| Transmission Type | ZF power shift transmission |
| Forward Speeds | 6 gears (5, 8, 11, 19, 23, 40 km/h) |
| Reverse Speeds | 3 gears (5, 11, 23 km/h) |
| Maximum Tractive Effort (f = 0.75) | ≥ 140 kN |
| Maximum Gradeability | ≥ 30% |
| Hydraulic System Working Pressure | 22 MPa |
| Service Brake System | Double-circuit hydraulic braking system |
| Tire Specification | 20.5-25 |
| Tire Inflation Pressure | 330 kPa |
Dimensions and Operating Range
| Dimensional & Working Parameter | Technical Data |
| Overall Dimensions (Length × Width × Height) | 10,615 × 3,280 × 3,960 mm |
| Moldboard Size (Length × Chord Height) | 4,572 × 686 mm |
| Maximum Blade Lift Height | 419 mm |
| Maximum Blade Cutting Depth | 438 mm |
| Ground Clearance (Front Axle) | 450 mm |
| Wheelbase (Front to Rear Axle) | 7,617 mm |
| Wheelbase (Middle to Rear Tandem) | 1,960 mm |
| Wheel Tread | 2,745 mm |
| Minimum Turning Radius | 9.0 m |
| Maximum Front Wheel Steering Angle | ±45° |
| Maximum Front Wheel Slant Angle | ±17° |
| Maximum Front Axle Oscillation Angle | ±15° |
| Maximum Frame Articulation Angle | ±23° |
Supplier Support and Procurement Services
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Genuine Spare Parts Supply: Supply support covers complete maintenance items for the GR3005, including cutting edges, end bits, circle drive wear components, hydraulic filters, and engine service elements.
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Equipment Sourcing & Fleet Solutions: Factory-direct coordination for new equipment procurement, with options to evaluate specialized configurations based on project operating conditions.
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Export Handling & Documentation: Full commercial support including export packaging, containerization, technical manuals, and international sea freight logistics.
Frequently Asked Questions
What applications is the GR3005 mining motor grader designed for?
The GR3005 is designed for heavy-duty earthmoving tasks, specifically open-pit mine haul road building, ongoing haul route maintenance, rock clearing, original topography remediation, and large-area ground leveling on highways and airfields.
Which engine and transmission are installed in the GR3005?
The grader is powered by a Cummins QSL8.9-C325-30 engine rated at 242 kW (325 HP) at 2,100 rpm, paired with a ZF power shift transmission with 6 forward and 3 reverse speeds.
How does the overload protection system on the blade circle work?
The circle drive uses a friction-disc worm gearbox. When the blade strikes an immovable object, the friction disc slips to absorb the impact, preventing mechanical damage to the moldboard, circle frame, and hydraulic cylinders.
What are the standard moldboard dimensions on this grader?
The standard moldboard measures 4,572 mm in length with a chord height of 686 mm, providing a maximum lifting height of 419 mm above ground and a cutting depth of up to 438 mm.
