Ultra-Long Stroke & Multi-Stage Telescoping
Available as double-stage or triple-stage cylinders, achieving over 2.5 meters of horizontal travel within a short retracted length. Each stage is manufactured from high-strength alloy steel, precision straightened and hard-chrome plated, ensuring rigid, sag-free extension throughout the stroke.
Lightweight Compact Design
Structural optimization and quenched-and-tempered high-strength materials reduce cylinder weight by up to 18% compared to conventional designs, lowering chassis side mass and improving fuel/energy economy.
Ultra-Low Breakaway, Stick-Free Motion
The filled-PTFE and low-friction polyurethane main seal, combined with specialized guide rings, keeps breakaway pressure below 0.2 MPa. Outrigger beams extend and retract smoothly without judder or stick-slip, enabling precise alignment even at very low speed.
Integrated Safety Valve Package
Hydraulic locks, load-holding valves, relief valves, sequence valves, and diagnostic test couplings can be integrated to securely lock the horizontal beam position, preventing unintended retraction and providing fail-safe holding in case of hose rupture.
Corrosion-Resistant Guide System
Guide bushings are treated with QPQ nitriding or electroless nickel-phosphorus plating, paired with stainless steel retainer rings and high-performance wipers, thoroughly blocking rain, mud, and de-icing salts from penetrating down the rod, eliminating rust seizure after long-term outdoor parking in winter conditions.
All-Terrain Crane Specialized Package
For all-terrain cranes operating in off-road conditions, an integrated cylinder head block and guide rail assembly is available. This mounts the extension cylinder into a lateral slide system, absorbing vibration and side loads from rough terrain while simplifying OEM installation.
Full Anti-Corrosion & Maintenance-Free Pivots
The piston rod is offered with hard chrome, Ni/Cr alloy plating, laser cladding, ceramic thermal spray, or QPQ finishing. Pivot points feature standard self-lubricating composite bushings that eliminate daily greasing and provide long, low-wear service life; stainless steel or spherical bearing upgrades are also available.
