Road Construction Machines Gr2205 220HP New Motor Grader

Product Introduction

The GR2205 is a high-performance 220-horsepower class motor grader with an operating weight of 16.7 tonnes, powered by a robust Cummins QSB6.7 engine (178kW). Featuring a load-sensing hydraulic system, it delivers precise control, smooth compound movements, and efficient load-carrying rotation. The blade measures 3965×610mm, offers 360° rotation, and achieves a maximum cutting depth of 715mm, making it suitable for precise road levelling, slope scraping, and trench digging. The articulated frame combined with front-axle steering ensures a small turning radius and agile manoeuvrability. Wet-brake axle with independent cooling ensures high reliability and low noise. The deluxe cab offers ergonomic comfort, with optional bulldozer blade/ripper and auto-levelling systems, suitable for roadworks, mining, airport construction and other engineering applications.

Product Advantage

Powerful and reliable: Fitted with premium-brand engines delivering ample power, low fuel consumption and minimal breakdowns, suited for extended continuous operation.

Precise hydraulic control: Load-sensing hydraulic system ensures smooth, responsive movements, seamless multi-task operations and high levelling accuracy.

Superior blade performance: Wide working range with exceptional digging depth, 360° flexible rotation for versatile grading, slope levelling and trenching.

Superior Manoeuvrability: Articulated frame combined with front-axle steering delivers a compact turning radius, ensuring exceptional adaptability in confined spaces and challenging terrain.

Safe, Stable and Durable: Wet brakes provide reliable safety, while an independent cooling system ensures consistent performance. The robust overall structure guarantees extended service life.

Comfortable and Efficient Operation: The spacious, comfortable cab offers excellent visibility and effortless controls, reducing fatigue during extended working hours.

Technical Parameters

Product Uses

Highway Construction and Maintenance: Subgrade shaping for new roads, base course paving, pavement levelling, maintenance and repair of national/provincial trunk roads and rural roads.

Airport and Terminal Construction: Precision levelling of airport runways, aprons, large-scale car parks, and logistics park sites.

Mining and Quarry Works: Construction of quarry access roads, spoil tip levelling, site grading for mining areas to withstand heavy-duty operations.

Water Conservancy and Agricultural Land Development: Excavation of irrigation channels, embankment maintenance, farmland reclamation, and slope levelling in irrigation districts.

Municipal and Infrastructure Projects: Grading of urban roads, industrial estate access routes, and factory premises; slope stabilisation and ditch excavation.

Construction Site Foundation Levelling: Preliminary site clearance, subgrade shaping, and levelling for high-speed rail, motorway, and bridge construction zones.

Product Operate Guide

Prior to operation, inspect the engine, hydraulic system, brakes, tyres, and working attachments such as the blade and ripper, confirming site safety. After starting, allow the engine to idle for preheating. Only commence work once normal air pressure and coolant temperature are observed on the gauges. Adjust the blade angle, height, and swing position according to construction requirements, ensuring smooth and gentle movements. Avoid abrupt turns, forceful pushing, or aggressive scraping. Maintain awareness of the surrounding environment during travel and operation, keeping a safe distance and clear line of sight. Carrying passengers is strictly prohibited. When grading subgrades, scraping slopes, or clearing surfaces, maintain a steady speed to ensure uniformity and construction quality. After completing work, retract the blade and cultivator. Park in a level, secure area, switch off the engine and disconnect power. Perform equipment cleaning and record inspection details. Strictly adhere to operational standards to ensure safety.

FAQ

1.How often should hydraulic oil be replaced?

A: Strictly follow the cycles stipulated in the official operation manual, usually based on working hours. For example:

First replacement: Generally around 500 hours (after the running-in period).

Subsequent replacement: Usually every 2,000 hours or once a year (whichever comes first).

Note: If the hydraulic oil is contaminated (water enters, turns milky white, has metal shavings) or deteriorates, it must be replaced immediately, regardless of whether the time is up or not.

2.When operating a motor grader, how to choose the correct Angle of the blade?

A: The Angle of the scraper needs to be adjusted according to the specific operation content

Leveling operation: The scraper can be set at a smaller positive Angle (with the tip facing forward), which is conducive to the forward rolling of materials and enables smooth pushing.

Slope scraping operation: It is necessary to utilize the rotation function of the scraper to form a certain Angle with the slope surface.

Soil transfer operation: A larger negative Angle (with the blade tip backward) can be adopted to increase the cutting depth and improve efficiency.

Principle: Start with a small Angle and make fine adjustments based on the actual effect and engine load to avoid engine stalling or severe impact on the equipment due to an overly large Angle.

3.Why does the traction of my motor grader feel insufficient?

A: Possible reasons include:

Improper tire pressure: Excessive pressure can reduce the ground contact area and cause skidding. If the pressure is too low, the resistance will be too large. Inflation should be carried out at the pressure specified in the manual.

The differential lock is not activated: When working on muddy and soft roads, the differential lock should be activated to prevent one side of the wheels from slipping and enhance the ability to get out of difficult situations.

The blade cuts too deep: The load is too heavy, exceeding the traction force of the engine. The blade should be appropriately raised or the cutting Angle reduced.

The transmission gear is too high: Under heavy-load conditions, a low gear should be used to provide greater torque.

4.How to troubleshoot if the scraper moves slowly or unstably during operation?

A: Possible causes:

The hydraulic oil level is too low: It causes the pump to suck air. Check and add it to the standard oil level.

Hydraulic oil filter element blockage: It causes poor oil passage. Check and replace the filter element.

Insufficient pilot pressure or main pressure: Professional technicians are required to use a pressure gauge to detect the system pressure.

If the valve core of the multi-way valve is stuck or leaking internally: The valve assembly needs to be cleaned or replaced.

5.What should I do if an alarm indicator light appears on the instrument panel during work?

A: Work should be stopped immediately. Refer to the manual to confirm the meaning of the alarm. Common ones include engine oil pressure alarm, excessively high water temperature alarm, etc. If it cannot be solved by yourself, you should immediately turn off the engine and contact the after-sales service personnel.

6.What could be the reasons for feeling that the vehicle is weak or moving slowly?

A: There could be many reasons, for example:

Engine fuel system issues (such as clogged filters, etc.).

Hydraulic system issues (insufficient hydraulic oil, clogged filter element, internal leakage in the system).

Improper operation (setting the gear too high).

It is recommended to start with simple checks (such as oil and filter elements). If the problem persists, it should be repaired by a professional technician.