**Product Overview**
The Hydraulic Cylinder of the excavator's boom is one of the core components of the excavator, responsible for driving the up and down movement of the boom, which directly affects the digging force, operational efficiency, and overall stability of the machine. This product is made with high-strength materials and precision manufacturing techniques, ensuring excellent performance and long-lasting durability even under heavy loads and high-frequency operation conditions.
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### **Key Features**
#### **1. High-strength Structural Design**
- **High-quality Materials**: The cylinder body is made of **42CrMo alloy steel**, which undergoes quenching and tempering heat treatment, with a tensile strength of ≥ 900 MPa; the surface of the piston rod is **coated with hard chromium** (thickness 0.05 - 0.08 mm), providing excellent wear resistance and corrosion resistance.
- **Optimized Structure**: The reinforced cylinder base and ear ring design are employed to withstand high impact loads, preventing the risk of fracture due to stress concentration.
#### 2. Exceptionally Strong Sealing Performance
- **Imported Sealing Components**: Utilize sealing combinations from brands such as **Parker/MERKEL/NOK**, which can withstand high pressure (35 MPa) and are resistant to wear. This effectively reduces internal leakage.
- **Multiple Layers of Protection**: A combination of dust seals, guide belts, and main seals provide triple protection, preventing sand and moisture from entering and extending the service life.
#### 3. Smooth Operation & Precise Control
- **Buffer Design**: Buffer structures are incorporated at both ends of the cylinder to reduce start-up and stop impacts, protecting the Hydraulic System.
- **Low Friction Guidance**: Precisely machined guide sleeves ensure smooth movement of the piston rod, preventing crawling or jamming.
#### 4. Strong Adaptability & Easy Maintenance
- **Standardized Interface**: Compliant with ISO/SAE standards, suitable for mainstream brands such as CAT, Komatsu, Sany, and XCMG excavators.
- **Modular Design**: Offers a **maintenance kit** (sealing package), enabling on-site maintenance and reducing downtime.
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### **Technical Specifications**
| **Parameter** | **Specification Range** | |-------------------|--------------------------|
| **Applicable Tonnage** | 5-50 ton excavators |
| **Cylinder Diameter** | 60-200mm (customizable) |
| **Rod Diameter** | 40-140mm |
| **Stroke** | 500-2500mm |
| **Working Pressure** | ≤ 35MPa (maximum pressure resistance 40MPa) |
| **Working Temperature** | -30℃ ~ +80℃ |
| **Protection Grade** | IP67 (dust and water proof) |
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### **Applicable Working Conditions**
✔ **Earthwork Excavation**: Efficiently drives the lifting of the boom to enhance excavation efficiency
✔ **Mining Operations**: Impact-resistant design suitable for hard materials such as gravel and minerals
✔ **Building Demolition**: High rigidity structure capable of withstanding frequent impact loads
✔ **River Dredging**: Anti-corrosion treatment to cope with humid and sandy environments
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### **Product Advantages**
✅ **Longer Lifespan** - Superior materials and precise craftsmanship ensure a service life of ≥ 8,000 hours
✅ **Greater Power** - Optimized hydraulic efficiency enhances digging force and response speed
✅ **Less Maintenance** - Modular design reduces maintenance costs by 30%
✅ **Wider Compatibility** - Supports OEM customization, matching various brand excavators
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### **Quality and Service**
- **Strict Testing**: 100% stress testing + durability tests to ensure reliability at the time of delivery
- **Guarantee Commitment**: 12-month quality guarantee, lifetime technical support
- **Global Supply**: Supports rush orders for customization, with quick delivery within 7-15 days
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