Kato HD820-7 Hydraulic Excavator
The Kato HD820-7 is a 20-ton hydraulic excavator designed for the global market. It features an Isuzu 4HK1X engine that is Stage 4/Tier 4 compliant, meeting stringent emission regulations. The excavator is engineered for enhanced productivity and user-friendliness due to its advanced design and innovative features.
Specifications
Engine
The Kato HD820-7 is powered by an Isuzu 4HK1X, 4-cycle water-cooled engine with overhead camshaft direct injection and an intercooler turbocharger. The engine specifications are:
- Engine Model: Isuzu 4HK1X
- Displacement: 5.193L (317 in³)
- Rated Output: 161 hp @ 2,000 rpm
- Maximum Torque: 646 N.m @ 1,600 rpm (476 lbf⋅ft)
- Fuel Consumption: 18.1 L/h
Dimensions
| Specification | Measurement |
|---|---|
| Overall Length | 9,570 mm |
| Overall Width | 2,820 mm |
| Overall Height | 3,090 mm |
| Max Digging Depth | 6,700 mm |
| Max Digging Radius | 9,930 mm |
| Max Digging Height | 9,830 mm |
| Max Dumping Height | 6,890 mm |
| Max Vertical Dig Depth | 5,970 mm |
| Ground Clearance | 470 mm |
| Track Gauge | 2,230 mm |
| Track Length on Ground | 3,370 mm |
| Tail Swing Radius | 2,800 mm |
Operational Specifications
- Operating Weight: 21,000 kg
- Bucket Capacity: 0.45 - 1.10 m³
- Fuel Tank Capacity: 420 L
- Swing Speed: 13.5 rpm
- Travel Speed: 3.42 mph
- Drawbar Pull: 39,251.64 lbs
Features and Benefits
Environmentally Friendly Engine
- Stage 4/Tier 4 compliant engine reduces NOx emissions by 88%.
- Large-capacity DEF tank requires refilling only once every four fuel refills, increasing efficiency.
Enhanced Productivity
- Cycle time improved by 4% compared to previous models for faster digging and loading.
- Increased boom and bucket cylinder hose diameters minimize power loss and enhance efficiency.
Improved Maintenance
- New dimple bush retains grease longer, extending lubrication intervals.
- Easily accessible filters and greasing ports reduce maintenance time.
- Dedicated cleaning space for radiator and battery disconnect switch enhance maintenance safety.
Enhanced Safety
- New ROPS cabin improves operator safety with a wider view.
- Polycarbonate door protects against debris and scattering stones.
- Engine start mechanism prevents accidental starts by requiring a locked safety lever.
- ISO-compliant handrail provides safer access to the upper structure.
- Rearview camera is standard, with an optional side-view camera for improved visibility.
Increased Comfort and User-Friendliness
- 26% increase in air circulation for better ventilation.
- New round-shaped operation lever reduces operator fatigue by 25%.
- Wide color display with touch-screen controls includes Advanced Productivity Control (APC) system.
- Pressurized and air-conditioned cabin for operator comfort in harsh environments.
- Adjustable seat ensures an ergonomic working position.
Applications
- General Excavation: Efficient for digging foundations, trenches, and basements.
- Material Handling: Suitable for loading trucks and moving aggregates.
- Construction: Used for site preparation, roadwork, and demolition.
- Landscaping: Ideal for pond digging, slope creation, and soil moving.
- Mining: Capable of mineral and ore extraction.
- Rock Breaking: Can be fitted with a hydraulic hammer for breaking rock formations.
The HD820-7’s minimal-radius design makes it highly maneuverable, especially for urban environments and confined spaces. However, for heavy-duty mining and large-scale earthmoving, larger excavators might be more suitable.
Price
The cost of the Kato HD820-7 hydraulic excavator varies based on the dealer, location, and optional attachments. Estimated price range:
- Lowest Price: $109,777
- Highest Price: $149,900
Conclusion
The Kato HD820-7 hydraulic excavator is a powerful and versatile machine suitable for various applications. Its Stage 4/Tier 4 compliant engine, combined with an efficient Selective Catalytic Reduction (SCR) system, highlights Kato’s commitment to environmental sustainability. With improved productivity, easy maintenance, enhanced safety, and superior operator comfort, this excavator is an excellent choice for professionals in the construction, mining, and material handling industries.
Its compact design makes it ideal for urban construction projects, and its strong performance ensures reliability in demanding conditions. Kato has a strong reputation for high-quality construction machinery, and the HD820-7 continues this legacy with cutting-edge technology and durable design.