Komac HK520c Crawler Excavator

General Information

• Model: HK520C
• Type: Large Crawler Excavator
• Operating Weight: approx. 50,500–52,000 kg
• Applications: Mining, quarrying, large-scale earthworks, heavy demolition, bulk material handling, port operations.

Engine

• Engine Type: 4‑stroke, turbocharged diesel, water‑cooled
• Rated Power: approx. 280–320 kW (≈ 375–430 HP)
• Rated Speed: ~1,800–2,000 rpm
• Possible Engine Brands: Cummins, Isuzu, or similar high-output industrial engines depending on region/order
• Fuel Tank Capacity: ~ 740 liters

Hydraulic System

• Main Pump Type: Dual variable displacement axial piston pumps
• Max Hydraulic Pressure: approx. 34.3–35.0 MPa
• Main Pump Flow: ~ 2 × 360 L/min
• Hydraulic Oil Tank Capacity: ~ 400 liters

Working Range

• Bucket Capacity: ~ 2.2–2.5 m³ (standard rock/GP bucket)
• Bucket Digging Force: approx. 320–330 kN
• Max Digging Depth: ~ 7.5–8.0 m
• Max Digging Reach: ~ 12.0–12.3 m
• Max Loading Height: ~ 7.5–8.0 m

Dimensions

• Overall Length: ~ 12.0 m
• Overall Width: ~ 3.5–3.7 m
• Overall Height (cab top): ~ 3.5 m
• Track Length on Ground: ~ 5.0 m
• Track Shoe Width: 650–800 mm (depending on configuration)

Performance

• Travel Speed: 4.8 km/h (High), 3.0 km/h (Low)
• Swing Speed: ~ 8–9 rpm
• Gradeability: 35°
• Tail Swing Radius: ~ 4.2 m

Special Features

• Heavy-duty boom, arm, and frame designed for extreme loads and abrasive environments
• Reinforced undercarriage with dust and wear protection for mining sites
• Optional quick coupler and specialized rock buckets
• ROPS/FOPS cab with climate control, noise dampening, and 360° visibility
• Low‑emission, high‑torque engine meeting Tier 3/Tier 4 final standards
• Advanced hydraulic control for optimized cycle time and fuel efficiency