Functions and Effects
Core function: As a key actuator in hydraulic systems, it converts hydraulic energy into mechanical energy to achieve precise linear motion, serving as the 'muscle' that controls the working mechanism of a planer.
Specific Application
Scraper Lift Control: Precisely adjusts the scraper height to achieve a leveling accuracy of ±3mm.
Scraper Tilting Adjustment: Controls the left and right tilt angle of the scraper (0-15°) to adapt to different terrains.
Scraper Swing Operation: Enables lateral displacement of the scraper, expanding the working range.
Front Wheel Steering Assist: Works with the steering system to improve maneuverability.
Articulated Steering Control: Enables the machine to bend at the waist for turning, reducing the turning radius.
Product superiority
1. Excellence in materials and manufacturing techniques
High-strength alloy steel: Utilizing Komatsu's proprietary 27SiMn special steel, with a tensile strength ≥1200MPa and a 40% increase in fatigue life.
Precision cold drawing + honing process: Inner wall roughness Ra≤0.2μm, roundness error <0.01mm, ensuring piston fit accuracy.
Heat treatment strengthening: Overall cylinder quenching + tempering, achieving a hardness of HRC42-45, increasing wear resistance by 3 times.
Ultrasonic testing: 100% weld inspection to ensure structural reliability and eliminate safety hazards.
2. Sealing and Reliability Design
Triple sealing system: Utilizes a combination of Gledit ring + Step seal + dust seal, with a leakage rate < 0.01ml/h.
Imported sealing material: The main sealing ring uses German Bessler polyurethane sheet, resistant to temperatures from -40℃ to +120℃ and high pressure up to 35MPa.
Buffer structure: Built-in hydraulic buffer device at the cylinder bottom reduces impact load and extends service life by 20%.
Corrosion protection: Hard chrome plating (0.05mm thickness) on both inner and outer surfaces, increasing salt spray corrosion resistance by 5 times.
3. Compatibility and Economy
Original Equipment Manufacturer (OEM): Designed specifically for Komatsu GD series graders, perfectly compatible with hydraulic systems.
Standardized Interfaces: Universal oil port specifications facilitate maintenance and parts replacement.
Easy Maintenance: Modular design reduces disassembly and assembly time by 50% and maintenance costs by 30%. All-Terrain Adaptability: Stable operation in harsh environments such as deserts, extreme cold, and high humidity, reducing failure rate by 60%.
Installation and Maintenance Recommendations
1.Installation Points
Thoroughly clean the cylinder barrel and connecting surfaces before installation to ensure they are free of impurities.
Use a specialized tool to install the sealing ring, avoiding damage to the sealing lip.
Align the cylinder axis with the load direction to prevent uneven loading.
Ensure the clearance of pin connections is ≤0.1mm to prevent abnormal vibration.
Control the oil port connection torque to 30-35 N·m to prevent leakage.
2.Maintenance
Routine Inspection: Before each operation, check the piston rod surface and seals for damage or oil leaks.
Regular Maintenance: Check oil cleanliness every 250 hours; replace the filter element if necessary.
Quarterly Maintenance: Check cylinder surface wear; measure roundness and straightness.
Long-Term Storage: Retract the piston rod to 2/3 of its stroke, fill the inner cavity with anti-rust oil, and provide dust protection.
