#### **Product Overview**
This product is a core Hydraulic Actuator specifically developed for Doosan DX series hydraulic excavators. It is manufactured in accordance with the original factory technical standards and precisely matches the boom structure of Doosan excavators. The cylinder, through optimized power transmission and sealing technologies, ensures efficient and stable performance under heavy-load conditions such as earth excavation and mining operations.
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### **Core Advantages**
#### **1. Factory-level power matching**
- 100% compatible with main models such as Doosan DX180/DX225/DX300
- Working pressure: 34.3 MPa (peak 42 MPa)
- Thrust is 12% higher than industry standards
#### 2. Strengthened Durability Design
- **Cylinder Block**: 27SiMn seamless steel pipe (quenched and tempered heat treatment)
- **Piston Rod**: Supersonic spraying WC-Co coating (hardness ≥ HV1100)
- **Sealing System**: German MERKEL main seal + Japanese NOK dust-proof combination
#### 3. Intelligent Work Control
- Dual-buffer valve configuration (reduces end impact by 60%)
- Optional displacement sensor (with ±0.5mm accuracy)
- Supports 5G remote condition monitoring (IoT version)
#### 4. Convenient Maintenance Features
- Externally-mounted oil filling nozzle design
- Quick-release type sealing maintenance kit
- Anti-collision protective sleeve (made of polyurethane material)
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### **Technical Specifications**
| **Project** | Standard Type | Overloaded Type | |-------------------|------------------|------------------|
| Compatible Models | DX180-DX300 | DX340-DX500 |
| Cylinder/Drum Diameter | Φ130/Φ90mm | Φ150/Φ110mm |
| Stroke | 1100-1580mm | 1250-1750mm |
| Working Pressure | 34.3MPa | 36.5MPa |
| Test Pressure | 42MPa | 51MPa |
| Protection Grade | IP68 | IP69K |
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### **Operating Condition Adaptation Plan**
#### **Mining Operations Version**
- Add ceramic coating (to resist mineral wear)
- Strengthen dust prevention system (to adapt to dusty environment)
#### **Cold Region Operation Version**
- Low-temperature sealed components (-45℃ for normal startup)
- Hydraulic oil preheating interface
#### **Municipal Engineering Edition**
- Noise reduction design (operating noise ≤ 72 dB)
- Environmental-friendly coating (anti-corrosion)
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### **Quality Assurance**
- Certified by ISO 6020/2 international standard
- 150,000 times bench fatigue test
- 36-month warranty for key components
- Each oil cylinder has an independent electronic ID card
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### **Service Support**
- Original equipment installation and positioning fixtures
- 2-hour rapid sealing replacement solution
- Over 200 service outlets across the country
- 48-hour emergency response
Injecting lasting and stable core power into Doosan excavators! **
**Customized Services**:
• Special coating treatment (acid/alkali resistant)
• Intelligent pressure monitoring system
• Customized ultra-long stroke (up to 2000mm)
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