Customized Rock Drilling Rig Telescopic Oil Cylinder

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. Advantages:1. Extended Reach:Multi-stage telescopic design achieves long stroke in compact retracted space.
2. High Impact Resistance: Reinforced construction withstands extreme shock loads during drilling.
3. Precision Control:Ensures accurate positioning and force for efficient rock penetration.
4. Abrasion Resistance: Hard-coated rods/seals endure gritty rock debris and harsh environments.
5. Custom Optimization: Tailored bore, stages, mounts, and pressure fit specific rig requirements.
6. Leak-Free Reliability: Advanced sealing prevents fluid loss under high-pressure cycles.
7. Reduced Downtime: Robust OEM-grade materials minimize maintenance in demanding operations.