Telescopic Hydraulic Cylinders for Truck Mounted Cranes 5-50 Ton

Premium Quality Hydraulic Cylinders - Quality Assured

1. Internals:Cylinder barrel adopts GUOYUE EU/US metallurgical standard CD250 structure. Barrel material: 45#, 42CrMo, or 27SiMn. Bore honed to H8 precision with surface roughness Ra<0.4μm. Heads, base, trunnions, and pistons are exclusively made of 45# steel; no cast iron or cast steel components are used.
2. Buffering:Multiple buffering options including fixed and floating buffer structures to ensure effective deceleration across various pressures and speed ranges.
3. Welding:100% ultrasonic impact treatment applied to all pressure-bearing and load-critical welds. This eliminates weld stress (removal rate ≥90%) and significantly enhances weld fatigue strength.
4. Sealing:All cylinders exclusively use premium imported seals from Japan NOK, Sweden Trelleborg, Germany Merkel, and GP. No domestic seals are utilized.
5. Testing &Certification:Factory testing strictly complies with GB/T15622-2005 "Hydraulic Fluid Power - Test Methods for Cylinders" and internal premium standard Q/GAKY014-2023. Includes provision of factory test reports and product qualification certificates.
6. Warranty: One-year warranty from shipment date. Free repair or replacement provided for defects arising from design or manufacturing within the warranty period.

Key Advantages:
Maximized Reach: 5-stage design achieves 8m+ extension while collapsing to 30% length.
High Load Stability: Synchronized stage movement ensures ≤1° tilt under 50-ton loads.
Space Optimization: Compact retracted size fits crane boom cavities.
Corrosion Resistance: Hard-chromed rods + epoxy coating withstand road salt/moisture.
Precision Control: Integrated pilot-operated check valves prevent drift during positioning.

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Core Applications:
1. Utility Cranes: Telecom tower erection, transformer handling.
2. Log Loaders: Timber stacking at roadside.
3. Recovery Trucks: Wrecked vehicle lifting.
4. Construction: Precast concrete placement.
5. Mining Service: Drill rod replacement in pit.
6. Disaster Response: Debris clearing in confined zones.