Used Hyundai 550VSExcavator

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📌 Overview

The Hyundai R550VS (Robex 550VS) is a 55-ton class large hydraulic crawler excavator manufactured by HD Hyundai Infracore (formerly Hyundai Construction Equipment). It belongs to the VS (Variable Speed) series, which is engineered for heavy-duty operations such as mining, quarrying, large-scale earthmoving, and major infrastructure projects.

The "VS" designation stands for Variable Speed System, an advanced technology that automatically adjusts engine speed to match the workload, significantly improving fuel efficiency and reducing emissions.

🔧 Engine Specifications

Parameter	Specification
Engine Model	Hyundai D6HA
Type	6-cylinder, inline, turbocharged, aftercooled diesel
Displacement	12.7 liters
Rated Power	294 kW (394 HP) @ 1,800 rpm
Max Torque	~1,735 Nm @ 1,400 rpm
Emission Standard	Stage V / Tier 4 Final (with SCR + DPF)
Fuel Tank Capacity	~650 liters

✅ The D6HA engine is known for its durability, reliability, and fuel efficiency, making it ideal for long working hours in demanding conditions.

⚙️ Hydraulic System

Parameter	Specification
Pump Type	Variable displacement axial piston pump (x2)
Max System Pressure	350 bar (5,075 psi)
Total Flow Rate	2 × 380 L/min (760 L/min total)
Control System	Load-sensing + Pressure-compensated
VS System	Automatically matches engine RPM to hydraulic demand

🔄 The VS (Variable Speed) system is the standout feature — it reduces engine speed during light operations, saving up to 10-15% fuel compared to conventional fixed-speed systems.

📐 Dimensions & Weight

Parameter	Specification
Operating Weight	~53,700 – 55,000 kg (55 tons)
Transport Length	~11,350 mm
Transport Width	~3,190 mm
Transport Height	~3,320 mm
Ground Clearance	~460 mm
Track Width	600 mm (triple grouser shoes)
Track Length (Ground Contact)	~3,990 mm

💪 Performance (Digging Capabilities)

Parameter	Specification
Max Digging Depth	~7,220 mm (7.2 m)
Max Digging Reach	~10,570 mm (10.6 m)
Max Dumping Height	~7,600 mm (7.6 m)
Max Digging Force (Boom)	~255 kN
Max Digging Force (Arm)	~185 kN
Bucket Capacity (Standard)	2.0 – 2.5 m³ (rock bucket available)
Max Breakout Force	~230 kN

🏗️ Key Features & Technology

Feature	Description
🟢 VS (Variable Speed) System	Auto-adjusts engine speed to load → saves fuel & reduces noise
🟢 Eco Mode	Optimizes hydraulic flow for lighter tasks → further fuel savings
🟢 Smart Control System	LCD monitor with real-time machine data, diagnostics & maintenance alerts
🟢 Telematics (Hyundai E-Spin)	Remote monitoring, fleet management, GPS tracking
🟢 Auto-Idle Shutdown	Engine auto-stops after preset idle time
🟢 ROPS/FOPS Cab	Fully enclosed, pressurized cab with air conditioning & heating
🟢 Hydraulic Quick Coupler	Easy attachment change (breaker, grapple, shear, etc.)
🟢 Auto-Lubrication System	Centralized greasing for all pivot points
🟢 Rear View Camera & Work Lights	Enhanced safety for night operations
🟢 Anti-Theft System (Immobilizer)	Engine immobilizer for security

🪑 Operator Comfort

Feature	Detail
Seat	Air-suspended, heated, fully adjustable
Climate Control	Dual-zone auto A/C with HEPA filter
Noise Level	~73 dB(A) (relatively quiet for its class)
Display	7-inch LCD touchscreen with multi-function display
Controls	Electronic joystick with programmable buttons
Vibration	Low vibration design for reduced operator fatigue

🔄 Available Attachments

Attachment	Application
🔨 Hydraulic Breaker	Rock demolition, concrete breaking
🪓 Hydraulic Grapple	Scrap handling, log loading
✂️ Hydraulic Shear	Metal cutting, demolition
🪣 Thumb / Bucket	General digging, loading
🔩 Vibro Hammer	Pile driving
🪣 Orange Peel Grab	Scrap metal, waste handling
🔧 Quick Coupler	Fast attachment switching

📊 Comparison with Competitors

Model	Weight	Power	Bucket	Max Depth
Hyundai R550VS	55 tons	394 HP	2.0–2.5 m³	7.2 m
CAT 355 / 352	52–55 tons	373–431 HP	1.9–2.5 m³	7.2 m
Komatsu PC550-11	55 tons	390 HP	2.0–2.5 m³	7.3 m
Volvo EC550E	55 tons	380 HP	2.0–2.4 m³	7.1 m
Doosan DX530LC-5	53 tons	370 HP	1.9–2.3 m³	7.0 m

✅ The R550VS is highly competitive, especially in fuel efficiency (VS system) and after-sales service network.

🌍 Applications

Sector	Use Case
🏗️ Construction	Large foundation excavation, road building
& Mining & Quarrying	Rock excavation, overburden removal
🏙️ Infrastructure	Dam construction, tunnel portal excavation
🏭 Demolition	Building teardown with breaker/shear
🚢 Ports & Dredging	Dredging, loading/unloading bulk materials
🌲 Forestry	Land clearing with grapple

✅ Advantages Summary

✅ Strength	Explanation
💰 Fuel Efficient	VS system saves 10-15% fuel vs. conventional models
💪 High Power	394 HP for demanding heavy-duty work
🔧 Reliable Engine	Proven D6HA with long service intervals
🛡️ Low Maintenance	Auto-lubrication, centralized greasing points
📱 Smart Technology	E-Spin telematics, real-time diagnostics
🌐 Strong Dealer Network	Wide global service & parts availability
🪑 Comfortable Cab	Reduces operator fatigue on long shifts

📋 Quick Specs Summary Table

Spec	Value
Model	Hyundai R550VS (Robex 550VS)
Class	55-ton
Engine	D6HA, 12.7L, 394 HP
Weight	~53,700–55,000 kg
Bucket	2.0–2.5 m³
Max Depth	7.2 m
Max Reach	10.6 m
Key Tech	VS Variable Speed, Eco Mode, E-Spin
Emissions	Stage V / Tier 4 Final

🏁 Conclusion

The Hyundai R550VS is a top-tier 55-ton excavator that combines raw power, fuel efficiency (via VS system), advanced technology, and operator comfort. It is an excellent choice for contractors and mining companies looking for a reliable, cost-effective, and technologically advanced large excavator. Its strong after-sales support and global parts network make it a smart long-term investment.

⚠️ Note: Specifications may vary slightly by region and model year. Always verify with your local Hyundai dealer for the latest specifications and pricing.

Would you like more details on any specific aspect — such as pricing, maintenance schedule, or comparison with a specific competitor? 😊