Key Advantages of Hydraulic Support Cylinders and pistons Produced by Shandong Sai Nuo

1.High-Strength Load Capacity with Ensured Safety
Ultra-High Pressure Design: Operating pressure reaches 31.5 - 80MPa, utilizing high-strength alloy steel (eg 27SiMnor 30CrMinSiA) with tensile strength >800 MPa. Through optimization, the tempered hardness is increased to HB270-300ensurina no cvinder bursts or detormation under extreme conditions, ettecuvelv resisund root impact oressure and preventing roof collapse accidents.Dvnamic Balance: The balancina cvlinder adiusts the roof canopy anale in real time, avoidina localized stress concen.tration and extending support lifespan.2 Precision Control for Efficient ProductionMlilimeter-Level Accuracy: Hydraulic closed-loop control ensures liting stroke error < + 10 mm, auaranteeing seamless coordination between shearers and armored face conveyors.Rapid Response: cylinder propulsion speed of 0.1 - 0.3 m/s, combined with electro-hydraulic control systems, enablesfuly automated face-wide shield advancing, increasina coal mining efficiency by over 30%3 Lona Service Life with Low Maintenance CostsWear-Resistant Sealing 
Technology: Uses imported polyurethane composite seals (machined) with pressure resistance ≥60 MPa and a service life exceeding 100.000 cvclesAnti-Corrosion Treatment: Plunger surfaces feature laser cladding or hard chromeplating (claddina thickness 0.5-0.7 mm, plating thickness >0.07- 0.09 mml, Outer and intemmediate cvlinders underao composite boring-rolina ex.trusion, enhancing corrosion and wear resistance for humid underground environments and prolonging service life.Modular Structure:Key components (e.g.. quide sleevespiston heads)allow quick replacement. reducing mainte.
nance time by 50%.4.Intelligent Adaptation to Working 
ConditionsMulti-Stage Telescopic Cylinders: Dual-telescopic/mechanical extension desians adapt to varying coal seam thicknesses, minimizing support model changes and lowering equipment procurement costs.5.Safety ComplianceMining Explosion-Proof Certification: Complies with GB25974.2-2010 standards, passing impact and fatigue tests (>50.000 cycles).
Low-Leakage Design: Equipped with bidirectional hydraulic locks and safety valve groups that automatically engageduring sudden pressure drops, preventing support failure.