Product Video
Products Description
|
Brand |
Product Name |
Model |
Part Number |
| Hitachi | boom Cylinder |
EX1900 |
4337270 |
General part number
| 4456955 / 4456955 / 4463376 / 4337259 / 4456959 / 4474729 / 4306628 / 4478058 / 4463378 / 4472306 / 4456955 / 4463376 / 4284470 / 4616553 / 4337270 / 4456959 / 4474729 / 4337259 / 4432250 / 4665379 / 4474729 / 4463376 / 4479260 / 4463378 / 4483059 / 4417855 / 4301778 / 4306628 |
We supply all models of Hitachi excavator parts. If you need to know other models, please contact us.
|
Product Name |
Track Roller |
|
Part Number |
4337270 |
|
Origin |
Japan
|
|
Brand Name |
STONE |
|
Model |
EX1900 |
|
Price |
Negotiable |
|
Packing Details |
Standard Export Packing |
|
Delivery Time |
0-30 Days |
|
Payment Term |
L/C, T/T |
|
Price Term |
FOB, CIF, CFR |
|
Supply Capacity |
50,000 PCS/Month |
|
Minimum Order Quantity |
1 PC |
|
Material |
High Quality Steel |
|
Technology |
Precision Machining |
|
Surface |
Treatment Anti-Corrosion Coating |
|
Hardness |
HRC 48-52 |
|
Quality |
Original Factory Standard |
|
After-Sales Service |
Full Support, Online Service |
|
Color |
Customizable |
|
Application |
Excavator
|
|
Customizable |
including customized materials, surface treatment and specifications |
EX1900-6 Excavator
Information
· Cummins QSKTA38-CE
· Maximum output power:810kW
· Bucket capacity: 12M³
· Bucket digging force: 671kN
· Digging force of bucket arm: 620kN
· Maximum digging radius: 15250mm
· Maximum digging depth: 8180mm
Quality materials
Optimized diameter ratio
The product adopts an optimized ratio of cylinder diameter and piston rod diameter to ensure the stability and flexibility of the cylinder while providing powerful thrust.
Built-in buffer
Hitachi boom cylinder has a built-in buffer device, which can effectively cushion the end of the cylinder stroke, reduce shock and vibration, and protect the cylinder and excavator structure.
Optimize the cylinder
The boom cylinder is designed with a boom and bucket arm locking function to prevent the boom and bucket arm from sinking and prolong their holding time in the neutral position.
Locking anti-sinking
Hitachi cylinder adopts dual pump confluence technology to increase the flow of the main valve to the boom cylinder and improve the operating speed of the boom.
Reasonable oil port
The internal structure of the cylinder has been optimized to reduce the resistance and turbulence of the hydraulic oil flow and improve the efficiency of the hydraulic system.
Dual pump confluence
The oil inlet and outlet positions of the oil cylinder are reasonably designed to facilitate the connection and layout of the hydraulic pipelines and reduce pipeline bending and resistance.
Structural design advantages
Precision Machining
The cylinder barrel is manufactured using a precision cold drawing process, featuring low internal surface roughness and high dimensional accuracy to ensure the smooth flow of hydraulic oil. The piston rod undergoes multiple fine processing steps, including turning, grinding, and chrome plating, resulting in excellent surface finish and dimensional accuracy precise to the micron level, laying a solid foundation for the stable operation of the cylinder.
Advanced Technology
The welding parts of the Hitachi boom cylinder adopt advanced technologies such as automatic TIG welding, ensuring firm and neat welds without defects like air holes or cracks. During the cylinder barrel processing, multiple quenching and tempering treatments are conducted to significantly enhance the material's hardness, strength, and toughness. The installation of seals complies with strict process standards to ensure proper installation without distortion or deformation, fully guaranteeing the sealing performance.
Strict Inspection
The internal components boast extremely high machining accuracy, with precise control of the clearance at matching parts to ensure the stable performance of the Hitachi boomcylinder. The assembly process strictly follows the process flow, and each component undergoes rigorous quality inspection. Meanwhile, advanced testing equipment is used to comprehensively test various performance indicators of the cylinder, ensuring the product meets high-quality standards.
Intelligent Management and Control
Our Hitachi boom cylinder is built using a state-of-the-art digital management system, which tracks every production phase for complete quality traceability and precision. This ensures consistent manufacturing in our dedicated, high-standard facilities, delivering superior final product quality.
High performance
Stable Operation
The action response is fast, and the boom can be raised and lowered quickly, improving work efficiency.
Adaptation to all scenarios
With its precise stroke, the Hitachi boom cylinder accurately controls boom lift height to meet the exacting requirements of precision work.
Collaborative Optimization
The speed is stable and can maintain a relatively uniform movement speed under different loads.
Safety and adaptability
Durable and reliable
All critical articulation points are constructed with forged components to enhance strength and prevent stress concentration.
The Hitachi boom cylinder features a reinforced base design, which mitigates stress and improves durability by employing larger bushings and increased plate thickness. Additionally, the cylinder is well-protected against contaminants such as dust and mud, effectively preventing them from entering the interior to reduce component wear.
Higher security
The Hitachi boom cylinder delivers triple-layer safety protection. Its rugged mounting structure resists loosening under intense shock.
The internal cushioning device absorbs mechanical shock while also preventing instability from boom inertia. For maintenance safety, the exclusive pressure release device safely vents cylinder pressure, eliminating ejection hazards.
Easy maintenance
The boom cylinder minimizes total cost of ownership through superior maintenance convenience. Key wear parts such as seals are designed for tool-free replacement by any technician. Its service-friendly design allows easy internal access for inspection and cleaning, ensuring early detection of potential issues.
Supported by detailed maintenance instructions, straightforward regular maintenance (including hydraulic oil changes) and quick fault diagnosis with common tools collectively slash maintenance complexity and expenses.
Comfortable operation
Experience a new level of comfort with the Hitachi boom cylinder. Its whisper-quiet operation drastically cuts noise pollution. Combined with minimal vibration and the cab's damping system, it effectively combats operating fatigue.
The cylinder delivers exceptionally smooth motion and requires only a feather-light operating force for precise, effortless boom control, significantly reducing physical strain.
STONE
We are always at your service when you need
Stone is a leading supplier of engineering machinery parts, focusing on providing high-quality parts for mining companies. Since its establishment in 2004, we have been based in Shanghai, China, and have built our own brand STONE, becoming a trusted choice in the industry. We are committed to providing a variety of parts including bulldozers, excavators and wheel loaders for well-known brands such as Caterpillar and Komatsu. Our product line covers a full range of OEM parts, such as Track Chain, Track Rollers, Sprocket, Excavator Buckets, Blades, Excavator Cylinders, Swing Circles, and various electrical and hydraulic components to ensure that our customers' stringent requirements for quality and performance are met.
quality
years experience
service
hours warrant
Q＆A
Q1: During normal operation, the Hitachi boom cylinder sinks slowly. What could be the possible causes?
A1: Common causes include worn or aged seals leading to internal hydraulic oil leakage, a faulty check valve failing to lock pressure, or excessive clearance due to piston wear inside the cylinder. It is recommended to first inspect the condition of the seals and check if the hydraulic system pressure is normal. Replacing any damaged parts should resolve the issue.
Q2: How can I extend the service life of the boom cylinder, and what are the key daily maintenance points?
A2: For daily maintenance, focus on these three key areas: First, regularly (every 500 hours) check and replace the hydraulic oil with the specified grade to prevent impurities from causing wear on the cylinder wall. Second, keep the seals clean and replace them promptly if any leakage is found to prevent contamination from mud or water. Third, regularly lubricate the cylinder's articulation points to avoid accelerated wear from dry friction. Additionally, avoiding heavy-impact operations can further extend its service life.
Q3: What key details should be paid attention to when replacing a boom cylinder?
A3: Things to note when replacing:
① First, completely release the hydraulic system pressure to avoid high-pressure oil spray;
② Clean the installation surface and connection parts, remove rust and oil stains, and ensure a tight fit;
③ Tighten the bolts diagonally according to the original torque standard to prevent uneven force;
④ After installation, conduct a low-speed and no-load test run to check whether the movement is smooth and whether there is any leakage. Confirm that there is no abnormality before putting it into operation.
Hot Tags: hitachi boom cylinder 4337270 for ex1900 excavators, China hitachi boom cylinder 4337270 for ex1900 excavators manufacturers, suppliers, factory