The EPYY11112020 Frame Support Cylinder is a high-pressure vertical actuator tasked with leveling the crane chassis and managing outrigger deployment. In the heavy lifting industry, “stability is safety”—and this crane outrigger cylinder is the primary mechanism that prevents chassis tipping during heavy-load luffing or tracking.

As a premier mobile crane stabilization ram, the EPYY11112020 is built to handle massive static loads. It serves as a superior aftermarket replacement for global crane brands, optimized for high-cycle deployment where zero-drift holding power is mandatory for site certification and operational safety.

The EPYY11112020 operates as a double-acting, heavy-tonnage hydraulic jack. Integrated into the crane’s chassis frame, it extends vertically to transfer the machine’s center of gravity onto the outrigger pads.

Hydraulic Performance: Supplying 30MPa to the Φ170mm bore generates massive compressive force. To handle the “rebound” shocks of sudden load releases, the cylinder is engineered to withstand up to 40MPa peak pressure, ensuring the solid steel barrel maintains its integrity under extreme structural stress.

Blueprint Anatomy: The CAD drawing details a 1140mm installation profile. A distinctive feature is the oversized Φ150mm rod, which provides necessary columnar strength to resist buckling when the outrigger is fully extended. The rod end features a specialized socket for swivel outrigger pads, allowing for safe deployment on uneven or sloped terrain.

40MPa Overload Redundancy

Support cylinders face violent shocks during crane luffing. Our 40MPa withstand rating ensures the barrel remains immune to deformation under dynamic shock events.

Zero-Drift NOK Matrix

Utilizing imported Japanese NOK seals to eliminate internal bypass, ensuring the crane chassis maintains absolute level position over days of continuous operation.

Massive Φ150mm Rod

The high-tensile 150mm rod is induction-hardened to provide unparalleled columnar strength, effectively resisting the lateral side-loads inherent in heavy-lift setups.

Corrosion-Proof Coating

Finished with multi-layer marine-grade epoxy primer and hard chrome plating, surviving 96-hour neutral salt spray tests for offshore or coastal job sites.

Supporting a high-reach crane requires uncompromised metallurgy. As an elite Heavy-Duty Outrigger Cylinder Manufacturer, we utilize ST52.3 (E355) high-yield seamless tubing to ensure the EPYY11112020 outlasts the equipment it serves.

The Φ170mm internal bore is CNC skived and roller-burnished to a mirror Ra 0.2µm finish. This minimizes dynamic friction during outrigger cycles, dramatically extending seal life even in dusty construction environments where abrasive grit is prevalent.

• Induction-Hardened Φ150mm Rod: Forged from high-tensile carbon steel and coated in 50µm of hard chrome for maximum impact and scratch resistance.
• Robotic Joint Welding: Port blocks and mounting trunnions are fused via multi-pass robotic SAW welding, validated by ultrasonic NDT for zero porosity.
• 100% Quality Assurance: Every 262kg unit undergoes a mandatory 40MPa hydrostatic hold test before global dispatch.

The EPYY11112020 providing rock-solid foundation stability for world-class lifting fleets.