Product Details:
Key Features and Applications
Fuel-Efficient Shangchai EFI Powertrain
The GR1803 is powered by an electronic fuel injection (EFI) Shangchai SC7H190.1G3 diesel engine delivering 140 kW at 2,000 rpm. Configured with a low-speed transmission line and low speed ratio matching, the system optimizes torque converter engagement at low travel speeds and reduces average fuel consumption by approximately 8%. Variable power control links engine curves directly to transmission gears for balanced power distribution.
Moldboard Rotation Under Load
The working hydraulic circuit operates with increased pressure to raise blade rotational torque, enabling moldboard slewing under active material loads. Paired with a high-frequency quenched rotary gear ring and an overload-protected turbine box, the circle drive resists high shock loads and abrasive wear during demanding earthmoving and rock leveling cycles.
High-Speed Hydraulic System and Optimized Blade Geometry
Higher-displacement hydraulic pumps and motors increase cylinder operating speed by 20%, resulting in fast blade lifting, side-shifting, and angle adjustments. The curved moldboard profile facilitates smooth soil rolling and rapid lateral discharge, preventing excessive material accumulation in the circle drive area.
Vibration Dampening and Sealed Operator Cab
The diamond-shaped operator cabin features a six-point mounting structure and multi-level vibration isolation across the engine, cab, and seat. An enclosed interior layout, large-diameter cooling fan, and sound-absorbing acoustic foam inside the engine hood lower operating noise and vibration, providing wide visibility and comfortable control during long shifts.
Broad Engineering and Earthmoving Applications
Engineered for civil construction and land development, the machine handles subgrade leveling, bank scraping, ditching, soil scarification, and snow clearance across highway projects, airfields, irrigation works, rural road networks, and mine haul roads.
Technical Specifications
| Parameter | Specification |
| Machine Model | GR1803 |
| Equipment Category | Road Motor Grader |
| Operating Weight (Standard) | 15,400 kg |
| Engine Model | Shangchai SC7H190.1G3 |
| Fuel Injection System | Electronic Fuel Injection (EFI) |
| Rated Engine Power | 140 kW (approx. 180–190 HP) |
| Rated Engine Speed | 2,000 rpm |
| Forward Travel Speeds | 6 gears (5, 8, 11, 19, 23, 38 km/h) |
| Reverse Travel Speeds | 3 gears (5, 11, 23 km/h) |
| Tractive Effort (f = 0.75) | ≥ 79 kN |
| Maximum Gradeability | ≥ 25% |
| Minimum Turning Radius | 7.3 m |
| Moldboard Dimensions (L × H) | 3,965 × 610 mm |
Dimensions and Operating Range
| Dimensional & Working Parameter | Technical Data |
| Overall Dimensions (Length × Width × Height) | 8,900 × 2,625 × 3,420 mm |
| Moldboard Dimensions (Length × Chord Height) | 3,965 × 610 mm |
| Maximum Blade Position Angle | 90° |
| Blade Cutting Angle Range | 28°–70° |
| Circle Slew Rotation Angle | 360° |
| Minimum Turning Radius | 7.3 m |
| Steering Configuration | Articulated frame + front-wheel steering |
| Moldboard Slewing Capability | Rotation under working load |
Supplier Support and Procurement Services
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Genuine Spare Parts & Blade Supply: Supply support covers wear items, 3,965 mm cutting edges, side cutters, end bits, circle gear components, hydraulic cylinder seals, and routine maintenance filters for the GR1803.
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Commercial Export Coordination: Direct factory-aligned quotations, technical parameter verification, and procurement consultation for international contractors and equipment dealers.
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Technical Documentation: Operation manuals, technical specifications, and remote technical consultation for maintenance and servicing.
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International Shipping Logistics: Export packaging, container loading coordination, and freight management for port-to-port delivery.
Frequently Asked Questions
What engine powers the CNFORCE GR1803 motor grader?
The GR1803 is equipped with a Shangchai SC7H190.1G3 electronic fuel injection (EFI) diesel engine producing 140 kW at 2,000 rpm, engineered with variable power management to optimize fuel efficiency.
What are the blade dimensions and rotational capabilities of the GR1803?
The standard moldboard measures 3,965 mm in length and 610 mm in chord height. It provides full 360-degree rotation, blade cutting angles from 28° to 70°, a 90° maximum blade position angle, and the ability to rotate under working loads.
How does the hydraulic system support moldboard rotation under load?
The hydraulic system features increased working pressure paired with higher-displacement hydraulic pumps and motors, increasing cylinder operating speed by 20% and generating sufficient rotational force to rotate the moldboard while actively carrying material.
What wear parts and spare parts are available for this model?
A complete inventory of wear parts is supported, including heavy-duty cutting edges, end bits, side cutters, circle drive gears, hydraulic seals, and scheduled service filters.
