The EPYY11112025 crane front support cylinder is a specialized vertical actuator typically mounted at the front bumper or chassis frame of truck cranes. Its primary role is to establish a four-point or five-point stabilization grid, significantly increasing the crane’s forward-reach stability. This stabilization jack cylinder is essential for high-tonnage cranes performing precision lifts over the cab.

Built with a Φ80mm bore and Φ60mm rod, this model balances a compact installation profile with high load-bearing capacity. It serves as a 100% mechanical replacement for flagship mobile crane brands, featuring a 1112mm installation height and a durable flange-mount design for secure chassis integration.

The EPYY11112025 operates as a vertical double-acting hydraulic jack. In mobile crane applications, it is integrated into the front chassis box. By extending its 790mm stroke, it transfers a portion of the machine’s front axle weight onto a ground pad, effectively acting as a pivot point that prevents forward rotational momentum during heavy lifting.

Hydraulic Performance: Supplying 18MPa to the Φ80mm bore produces the stable force required to level a multi-ton crane chassis. The thick Φ60mm rod is specifically engineered to provide columnar strength, ensuring the cylinder stays rigid even when fully extended under maximum vertical load.

Blueprint Anatomy: The CAD drawing details a flange-mounting configuration at the cylinder head, which distributes load evenly across the chassis frame. A specialized spherical rod end allows the outrigger pad to adapt to sloped or uneven soil, preventing destructive lateral forces on the Japanese NOK internal seals.

27MPa Overload Redundancy

Front stabilizers face violent shocks during high-angle luffing. Our 27MPa withstand rating ensures the steel barrel remains immune to swelling.

Zero-Drift High-Pressure Seals

Utilizing imported Japanese NOK multi-lip seals to eliminate internal fluid bypass, ensuring the crane chassis maintains absolute level position for days of operation.

Anti-Buckling Φ60mm Rod

The high-tensile 60mm rod is induction-hardened to provide unparalleled columnar strength, critical for preventing buckling under full load extension.

Universal Flange Mount

Engineered to a standardized 1112mm installation height, it serves as a modification-free drop-in for standard mobile crane outrigger circuits.

Establishing structural safety for high-reach cranes requires uncompromised metallurgy. As an elite Heavy-Duty Outrigger Cylinder Manufacturer, we utilize ST52.3 (E355) high-yield strength seamless tubing to ensure the EPYY11112025 outlasts the equipment it serves.

The Φ80mm internal bore is CNC skived and roller-burnished to an mirror Ra 0.2µm finish. This minimizes dynamic friction during outrigger deployment, preventing thermal seal degradation even in dusty construction environments where abrasive grit is prevalent.

• Quenched Φ60mm Rod: Forged from high-tensile 45# carbon steel and coated in 50µm of hard chrome for maximum impact and scratch resistance.
• Robotic Joint Welding: Mounting flanges and port blocks are fused via multi-pass robotic SAW welding, validated by ultrasonic NDT for zero porosity.
• 100% Quality Assurance: Every 45kg unit undergoes a mandatory 27MPa hydrostatic hold test before global dispatch.

The EPYY11112025 providing rock-solid foundation stability for world-class mobile lifting fleets.