Advantages of the Liugong 777A Backhoe Loader

The Liugong 777A Backhoe Loader combines the versatility of a front-end loader with the digging capability of a rear excavator. Designed for construction, road maintenance, material handling, and utility installation, it provides two essential functions in one machine.

Key Advantages

• Perkins Turbocharged Engine: The Perkins 1104D-44TA four-cylinder diesel engine delivers 74.5 kW at 2,200 rpm, providing dependable power for loading and excavation.
• Dual-Purpose Design: A 1.0 m³ front bucket handles soil, sand, gravel, and other bulk materials, while the 0.2 m³ rear bucket is suited to trenching and general excavation.
• Practical Digging Reach: Maximum digging depth reaches 4,440 mm, with a maximum digging distance of 5,443 mm.
• Strong Bucket Performance: Maximum breakout force reaches 59.3 kN at the front bucket, while maximum digging force reaches 58.2 kN at the rear bucket.
• Flexible Travel Speeds: Four forward and four reverse speed positions support movement across construction sites and between operating areas.
• Convenient Machine Dimensions: With an operating weight of 8,400 kg and an overall width of approximately 2.28 m, the 777A offers a practical balance of loading capacity and site maneuverability.

Applications of the Liugong 777A Backhoe Loader

The Liugong 777A Backhoe Loader is suitable for a variety of construction and material handling applications. Its front loading bucket and rear excavating arm allow operators to switch between loading, digging, and trenching without requiring separate machines for every task.

• Road Construction and Maintenance: Load aggregates, move loose materials, and excavate roadside drainage channels.
• Building Construction: Clear construction areas, move sand and gravel, and dig foundations for small to medium-sized structures.
• Utility Installation: Excavate trenches for water pipes, drainage systems, and underground cable installation.
• Agriculture and Land Development: Dig irrigation channels, level loose soil, and move earth around agricultural properties.
• Municipal Maintenance: Support drainage improvements, roadside repairs, and general infrastructure maintenance.
• Material Handling: Load soil, sand, gravel, and other loose materials into trucks or designated storage areas.

1. Perkins 1104D-44TA Engine

The 4.4 L, four-cylinder turbocharged diesel engine delivers 74.5 kW at 2,200 rpm. Its established engine design provides the power needed for routine loading and excavation.

2. Front Loading Bucket

The 1.0 m³ front bucket is designed for handling loose materials such as sand, soil, and gravel, making truck loading and material transfer more efficient.

3. Rear Excavating Assembly

The rear excavating arm reaches a maximum digging depth of 4,440 mm and a maximum digging distance of 5,443 mm, supporting trench excavation, drainage installation, and foundation preparation.

4. Hydraulic System

The hydraulic system operates at a specified working pressure of 24 MPa, supporting the machine’s loading and excavating functions.

5. Four-Speed Travel Configuration

Four forward and four reverse speed positions provide a choice of travel speeds from 5.9 to 36 km/h, according to the selected transmission gear.

6. Practical Operator and Machine Layout

The enclosed cab, approximately 2.28 m overall width, and 334 mm minimum ground clearance provide a practical configuration for general construction and infrastructure applications.