John Deere 550K LGP Dozer Specifications and Key Features

The John Deere 550K LGP dozer is designed for operators looking for reliable performance in soft, wet, or uneven terrain. It’s a standout for earthmoving and heavy-duty construction work, thanks to its powerful engine and superior maneuverability. Equipped with a 4.5L PowerTech™ engine, the 550K LGP delivers up to 92 horsepower, ensuring optimal performance under challenging conditions.

With a total operating weight of around 18,000 lbs, this dozer is capable of handling tough jobs while maintaining impressive fuel efficiency. Its low ground pressure system–measured at just 5.3 psi–helps distribute the weight more evenly, minimizing damage to sensitive surfaces and maximizing traction on soft soils.

The machine’s hydrostatic drive system allows for smooth, precise control in both forward and reverse movements. With a maximum blade width of 10 feet 6 inches, the 550K LGP is optimized for large-scale grading and material handling tasks. Whether you are working on road construction or land clearing, this dozer’s features make it a reliable choice for heavy-duty operations in tight spaces.

John Deere 550K LGP Dozer Specs

The John Deere 550K LGP dozer is engineered for tough, high-production tasks. It delivers reliability, strength, and versatility in various conditions. Here’s a breakdown of its key specifications.

• Engine: The 550K LGP is powered by a 4.5L Final Tier 4 (FT4) engine, offering 92 horsepower (69 kW). This engine provides strong fuel efficiency and meets modern emissions standards.
• Operating Weight: It has an operating weight of 16,500 lbs (7,484 kg), making it compact yet capable of handling demanding jobs.
• Blade Capacity: The standard semi-U blade has a capacity of 2.66 cubic yards (2.03 m³). Its wide blade width ensures efficient material handling.
• Track Width: Equipped with low-ground pressure (LGP) tracks, it features a track width of 28 inches (711 mm), providing stability and minimizing ground disturbance.
• Ground Pressure: The 550K LGP’s ground pressure is approximately 4.2 psi (0.29 bar), allowing it to perform on soft or marshy ground.
• Transmission: The dozer includes a fully automatic transmission with a Power Shift system, providing smooth gear transitions during operation.
• Hydraulic System: The hydraulic system delivers up to 14.3 gpm (54 lpm), providing ample power for efficient blade and ripper operation.
• Fuel Tank Capacity: It has a fuel tank capacity of 52.8 gallons (200 liters), offering extended work cycles without frequent refueling.
• Cab Features: The operator’s cab is designed for comfort with adjustable seating, climate control, and enhanced visibility, reducing operator fatigue over long hours.

This combination of power, efficiency, and operational ease makes the John Deere 550K LGP Dozer a solid choice for construction, grading, and land-clearing projects.

Engine Performance and Power Output of the 550K LGP

The John Deere 550K LGP dozer is powered by a 4.5L John Deere PowerTech PSS diesel engine, delivering a robust 120 horsepower at 2,200 RPM. This engine provides enough power to handle demanding tasks in tough environments, whether you’re working in construction, land clearing, or grading.

At 120 horsepower, the 550K LGP excels in pushing and lifting heavy materials while maintaining fuel efficiency. The engine’s torque curve is optimized for low-end power, allowing the dozer to perform smoothly at low speeds, which is crucial for fine grading and heavy earthmoving tasks.

The PowerTech engine also features a high pressure common rail fuel system, which helps optimize fuel combustion for better power delivery and lower emissions. The result is a dozer that can handle tough terrains while keeping fuel consumption in check.

With a rated operating capacity of 13,500 pounds, the 550K LGP offers the performance needed to take on medium to heavy-duty operations, making it ideal for contractors who need power and reliability in one package.

Operational Weight and Ground Pressure of the 550K LGP

The John Deere 550K LGP dozer has an operational weight of 18,350 lbs (8,314 kg), which includes the machine, standard equipment, and operator. This weight ensures stability and traction in challenging soil conditions, ideal for tasks like land clearing, grading, and road building.

When it comes to ground pressure, the 550K LGP achieves a ground pressure of 4.0 psi due to its low ground pressure design. The wide tracks distribute the weight evenly across a larger surface area, minimizing soil compaction. This makes it especially effective in wet or soft terrains, where traditional dozers might struggle.

The combination of weight and ground pressure allows the 550K LGP to perform optimally in sensitive environments, providing maximum efficiency without damaging the underlying soil.

Hydraulic System and Blade Specifications for the 550K LGP

The John Deere 550K LGP dozer features a hydraulically powered system that ensures precision and power for a variety of tasks. The hydraulic pump is capable of delivering 30.5 gallons per minute (GPM) at 2,000 RPM, offering quick response and strong lifting capacity. This makes it suitable for heavy-duty operations while maintaining efficiency in fuel consumption.

The hydraulic system operates at a maximum pressure of 3,000 psi, providing the force needed for tasks such as grading, digging, and lifting. It incorporates a load-sensing feature, adjusting the flow of hydraulic fluid based on the demand, optimizing performance and preventing unnecessary strain on the engine.

The 550K LGP’s blade is equipped with a six-way configuration, allowing for precise adjustments in angle, tilt, and lift. This blade can be raised to a height of 15.4 inches and has a maximum cutting depth of 5.4 inches, making it ideal for tasks like leveling and material handling. The blade width spans 96 inches, providing ample coverage for efficient soil movement. With an automatic blade tilt and float feature, the dozer offers enhanced control and flexibility during operations.

The hydraulic system and blade design work seamlessly together, providing the operator with exceptional control, speed, and power. This integration reduces fatigue and increases productivity, especially in challenging terrain where the 550K LGP excels due to its low ground pressure and robust hydraulics.