Road construction
Building and foundation excavation
Municipal construction
General earthmoving
Quarry and aggregate handling
Water conservancy projects
Infrastructure development
| Item | Standard Specifications | Options |
| Operating Weight | 21.3 t | |
| Breaker | 14T Hydraulic type | 1.1m³ bucket |
| Engine | Cummins 6BTAA5.9 | customized |
| Rated Power | 133 kW / 2200 rpm | |
| Travel Speed | 3.2 km/h-- 5.8 km/h | |
| Swing Speed | 10.7 rpm | |
| Gradeability | 35° | |
| Max. Digging Depth | 6,525 mm | |
| Max. Digging Reach | 9,820 mm |
Note: Specifications and designs are subject to change without notice.
21-Ton Crawler Excavator for Construction, Earthmoving & Infrastructure
The NEW SKY NK622 is a 21.3-ton crawler excavator designed for demanding earthmoving, infrastructure and general construction applications.
Powered by a Cummins 6BTAA5.9 engine rated at 133 kW, the NK622 combines strong digging performance with a responsive hydraulic system and durable structural components. Its 0.9–1.1 m³ bucket range provides a practical balance between digging force, loading efficiency and operating flexibility.
BUILT FOR EVERYDAY HEAVY-DUTY WORK
From road construction and municipal projects to building foundations and large-scale earthmoving, the NK622 is designed to deliver stable performance throughout long working shifts.
WHY CHOOSE NK622?
Cummins Power--
The Cummins 6BTAA5.9 engine delivers 133 kW of rated power, providing dependable power for continuous excavation and material handling.
Responsive Hydraulic System--
The negative-flow-control hydraulic system adjusts hydraulic output according to operating demand, supporting smooth and responsive machine movements.
Fast Cycle Response--
With a maximum swing speed of 10.7 rpm and travel speed of up to 5.8 km/h, the NK622 is designed for efficient cycle operations and convenient movement around the jobsite.
Durable Structure--
High-strength steel components provide a robust structural foundation for excavation, loading and other demanding construction operations.
Flexible Working Range--
With a maximum digging depth of approximately 6.5 m and maximum digging reach of approximately 9.8 m, the NK622 covers a wide range of common excavation requirements.
ENGINEERED FOR PRACTICAL OWNERSHIP
For contractors and equipment owners, productivity is only part of the equation. Machine reliability, maintenance accessibility and component availability also influence the total operating cost.
The NK622 combines a proven engine platform, established hydraulic components and a straightforward machine configuration to support practical ownership and long-term operation.
ATTACHMENTS & CONFIGURATION
Available configuration options may include:
General-purpose bucket
Hydraulic breaker
Other application-specific attachments
LOOKING FOR A 21-TON EXCAVATOR FOR YOUR MARKET?
Tell us about your application, working conditions and required configuration. Our team can recommend the appropriate machine and attachment configuration for your project.
