21 Ton Crawler Hydraulic Excavator
This 21-ton crawler hydraulic excavator achieves a dual breakthrough in performance and energy efficiency through innovative structural design and an advanced hydraulic system. Its reinforced key components and optimized load distribution ensure powerful digging force and exceptional operational stability, while the efficient hydraulic system and internal flow path design not only increase digging force by 11% but also reduce fuel consumption by 8%. Additionally, the refined filtration system extends maintenance intervals, effectively reducing downtime and operational costs.
Product description：
This 21-ton crawler hydraulic excavator will bring safe and comfortable driving experience.
This 21-ton crawler hydraulic excavator is equipped with a brand new cab with big view, lower noise, more comfortable operating environment, optimized design of cab silicone oil shock absorber can minimize the vibration of the cab, the cab is installed with imported brand high-power air conditioner and integrated control panel.
This 21-ton crawler hydraulic excavator is adjustable for more comfortable working.
This 21-ton crawler hydraulic excavator is equipped with ROPS anti-roll cab as standard, which improves the safety coefficient of the driver, and optional cab protection net and anti-collision side beams, which is more suitable for the mining operation environment.
The air conditioner cartridge for internal and external air of the 21-ton excavator can be simply disassembled and cleaned easily, and it is equipped with a negative switch, which can cut off the power of the whole vehicle conveniently and quickly.
Performance Parameters:
Weight(T) | 21.2 |
Bucket capacity(m3) | 1.06 |
Engine model | 6BTAA5.9 |
Power(kw/r/min) | 133/2000 |
Fuel tank volume(L) | 330 |
Traveling speed(km/h) | 5.1/3.1 |
Turning speed(r/min) | 12.4 |
Climbing capacity(%) | 70 |
Bucket digging force(KN) | 146 |
Bucket length(mm) | 2925 |
Ground pressure(KPa) | 49.8 |
Hydraulic oil tank volume(L) | 250 |
Dimensional parameters:
A-Total length (mm) | 9625 |
B-Ground clearance of counterweight (mm) | 4915 |
C-Overall height (top of arm) (mm) | 3075 |
D-Overall width (driver's top) (mm) | 2980 |
E-Overall height（to cab top）(mm) | 3055 |
F-Counterweight ground clearance(mm) | 1075 |
G-Min.ground clearance (mm) | 468 |
H-Tail slewing radius (mm) | 2925 |
J-Track length (mm) | 4140 |
K-Track to track distance (mm) | 2380 |
L-Track width (mm) | 2800 |
M-Track plate width (mm) | 600 |
O-Hood height(mm) | 2395 |
P-Slewing platfoem width(mm) | 2725 |
Q-Distance from the center of rotation to the rear end(mm) | 2920 |
Scope of operation:
A-Maximum excavation height (mm) | 10950 |
B-Maximum unloading height (mm) | 7190 |
C-Maximum excavation depth (mm) | 6490 |
D-Maximum vertical wall digging depth (mm) | 5915 |
F-Maximum excavation range (mm) | 9860 |
G-Maximum digging distance in ground plane (mm) | 9675 |
H-Minimum swing radius of working device (mm) | 2970 |
Excavator Arm:
The boom (moving arm) is designed with a large cross - section. The high - load areas are strengthened, resulting in high durability. Moreover, the optimized design effectively avoids stress concentration.
Excavator Bucket Bar:
The bucket rod is strengthened in accordance with the direction and magnitude of the force exerted during operation. It is strengthened based on the force direction and size in work, and its strength has been significantly enhanced.
Excavator Bucket:
The bucket is crafted from highly wear - resistant materials, which effectively extends its service life.
21 Ton Crawler Hydraulic Excavator Lower X - frame:
Each process of the lower X - frame is fabricated and processed using advanced domestic and international equipment. Non - destructive testing is carried out on important components. The track frame features a 7 - supporting - wheel structure design and is standardly equipped with 45 sections of track plates. This ensures the reliability and stability of the entire vehicle under diverse and complex working conditions.
SH210-9 crawler hydraulic excavator System:
The engine of international famous brand that meets China's three-stage emission standard for off-road machinery diesel engine and adopts international advanced hydraulic system.
Special cylinder for excavator:
High-quality special cylinder for excavator, for the excavator cylinder work impact load, control complex and variable, harsh working environment and other characteristics, the sealing structure, buffer structure, mechanical structure and coating technology for a large number of optimization.
Excavator cooler parallel installation method:
Hydraulic oil radiator, water radiator and intercooler are arranged horizontally in parallel, with good heat dissipation and easy cleaning.
Company Strength:
Shandong Shitian Heavy Industry Co., Ltd (Jining Shan re-energy) is located in Jining City, Shandong Province, high-tech zone technology industrial development zone. It is a high-tech enterprise specializing in the research, development and production of large excavators. For the large energy-saving excavator design, research and development and production of the leader, the development of hybrid large excavator SH520-9 energy-saving effect reached more than 30%.
In 2020, Jining Shan re-energy hybrid excavator production base project into the key support projects in Shandong Province, its conventional products SH380-9 using a full set of German Linde hydraulic system, strong digging performance, upholding the German industrial products, reliable and efficient design and manufacturing concepts; SH470-9, SH500-9, SH600 in the mines, highways, quarry conditions after decades of verification, known for high efficiency, energy saving The SH470-9, SH500-9, SH600 have been proven in mining, highway and quarry conditions for decades and are famous for high efficiency and energy saving.
Why Choose Us?
1.Robust R&D Strength
We maintain an in-house R&D team and collaborate with 3 leading professional partners to drive product development and upgrades. Our technical team consists of 8 core R&D experts and 28 R&D/prototype specialists, delivering strong support for technological innovation and rapid product iteration.
2.Stringent Quality Assurance
Adopting the internationally recognized TQC (Total Quality Control) system, we implement full-process quality management—covering R&D, production, and delivery—to ensure consistent product reliability and performance excellence.
3.Comprehensive After-Sales Support
Backed by 21 senior technical service professionals, we provide end-to-end after-sales solutions, including equipment installation guidance, on-site operation training, timely troubleshooting, and continuous technical consultation, ensuring a seamless user experience.
4.Experienced Production Management
Our production management team brings over 15 years of deep expertise in the engineering machinery industry. Leveraging mature management systems and practical experience, we strictly control every assembly process to guarantee superior product craftsmanship and structural stability.
