Golden Powertrain: Powered by a 242kW Cummins QSC8.9 engine, delivering massive torque for mining and hard soil while optimizing fuel economy to cut operating costs.
Stable 36-Ton Platform: Heavy 36-ton operating weight and wide undercarriage ensure superior stability and smooth operation on rough terrain and slopes.
Large Bucket & Extensive Reach: Features a 1.6–1.8m³ bucket, 7.37m digging depth, 10.2m digging height, and 11.1m reach, maximizing efficiency for deep pits and high stockpiles.
Fast & Agile Operation: Top travel speed of 6.2km/h and swing speed of 8.2rpm minimize idle time. 35° gradeability handles steep mine slopes easily.
Optimized Dimensions: Compact yet stable design (11.19m length × 3.19m width) balances maneuverability for open sites like mines and large construction yards.
Heavy-Duty Reliability: Reinforced structure and proven hydraulic systems reduce downtime, ensuring high availability in the toughest applications.
Note: Specifications and designs are subject to change without notice.
| Working Condition AdaptationNK638 Crawler Hydraulic Excavator | ||
| Category | Item | |
| Engine | Brand & Model | Cummins QSC8.9 |
| Rated Power | 242 KW | |
| Rated Speed | 2000 rpm | |
| Performance | Undercarriage Type | Crawler |
| Operating Weight | 36 Ton | |
| Bucket Capacity | 1.6-1.8 m³ | |
| Travel Speed (High / Low) | 6.2/4 km/h | |
| Swing Speed | 8.2 rpm | |
| Gradeability | 35° | |
| Working Range | Max. Digging Depth | 7370 mm |
| Max. Digging Reach | 11100 mm | |
| Max. Dumping Height | 7135 mm | |
Working Condition Adaptation | Specifically engineered for tough mining environments and quarry operations, handling heavy loads with exceptional stability and durability. | |
Product Highlights
Powerful Power System
Cummins QSC8.9 Engine: Equipped with a 242kW high-power engine, it delivers abundant power to easily handle heavy-duty conditions like mining and earthmoving, improving operational efficiency by over 20%.
Low Fuel Consumption Design: The optimized fuel injection system reduces comprehensive fuel consumption by 15% compared to similar products, saving significant operating costs over the long term.
Highly Efficient Operation
36-Ton Operating Weight: Ensures strong stability. Paired with a large 1.6-1.8m³ bucket, it shortens the single operation cycle time and increases daily earthmoving volume by 30%.
7.37m Max Digging Depth & 10.2m Max Digging Height: Covers complex scenarios such as deep foundations and high stockpiles, reducing the frequency of equipment relocation and expanding the operational range.
Reliability & Durability
Mining-Grade Structural Reinforcement: Key components like the undercarriage, boom, and arm are made of high-strength steel, with 40% improved fatigue resistance to adapt to long-term high-intensity operations in harsh conditions.
35° Gradeability & 6.2km/h High-Speed Travel: Offers flexible transfer and excellent passability on mountainous or rough roads, reducing reliance on auxiliary equipment and lowering construction costs.
Easy Maintenance
Modular Design: Reasonable layout of core components like the engine and hydraulic system, with centralized maintenance points. This shortens routine maintenance time by 50% and minimizes downtime losses.
Global Parts Supply: Strong compatibility of Cummins engine parts and an extensive after-sales network ensure rapid fault response and continuous equipment operation.
Scenario Adaptability
Mining-Specific Configuration: Optimized sealing and damping systems for mining environments (dust, vibration, etc.) extend equipment lifespan by 30% and reduce major overhaul frequency.
Multi-Condition Compatibility: Optional attachments like breakers and grapples make it a versatile machine, meeting diverse construction needs in earthmoving, mining, and forestry.
