Precision Outrigger Extension Ram for Truck Cranes
Expand your operational footprint with absolute precision. The EPYY11112022 Opening Rack Support Cylinder is a highly specialized 48kg hydraulic actuator designed to horizontally deploy mobile crane outriggers. Operating at 20MPa with an impressive 1237mm stroke, it guarantees smooth, synchronized rack extension to establish a stable lifting base on complex construction sites.
1. Comprehensive Product Overview
In the mobile crane industry, structural stability begins with lateral deployment. The EPYY11112022 truck crane rack cylinder is purposefully engineered to drive the horizontal outrigger beams (racks) outward before the vertical stabilization jacks are engaged. This critical horizontal movement dictates the crane’s maximum lifting capacity and safety footprint.
Crafted for tight-clearance chassis integration, this outrigger extension cylinder combines a compact 48kg mass with an extended 1237mm reach. It serves as a premium aftermarket drop-in for globally recognized truck cranes, offering superior resistance against bending and internal fluid bypass during the intense deployment cycle.
Primary Engineering Applications:
- Truck Crane Outriggers: Horizontal extension of stabilizing racks.
- Mobile Elevating Work Platforms: Lateral chassis expansion for aerial lifts.
- Industrial Machinery: Precision opening mechanisms for heavy sliding racks.
- Modular Transporters: Hydraulic width adjustment for heavy haulage.
2. Exact Technical Parameters
Smooth chassis deployment relies on precise hydraulic calibration. Review the verified technical specifications of the EPYY11112022 rack support ram below to ensure seamless system integration.
| Technical Attribute | Specification Details (Model: EPYY11112022) |
|---|---|
| Cylinder Model Number | EPYY11112022 |
| Bore × Rod × Stroke Specifications | Φ70 × Φ50 × 1237 (mm) |
| Rated Working Pressure | 20 MPa (Approx. 2900 PSI) |
| Maximum Withstand Pressure | 30 MPa (High Safety Buffer) |
| Trip / Operational Stroke | 1237 mm (Extended Reach) |
| Installation Distance (Offset) | 140 mm |
| Total Unit Weight | 48 kg (High Strength-to-Weight) |
3. Structural Principles & CAD Blueprint
The EPYY11112022 operates as a long-stroke, double-acting hydraulic actuator. Housed within the horizontal outrigger box of a truck crane, it converts 20MPa of hydraulic pressure into a linear pushing force, extending the heavy steel racks smoothly to their designated width.
Hydraulic Dynamics: To push heavy steel beams horizontally without sagging, the cylinder relies on a robust Φ70mm bore and a thick Φ50mm rod. This specific 70/50 ratio ensures the cylinder rod will not buckle or deflect under the immense friction of the sliding rack, even when fully extended to its 1237mm limit.
Blueprint Anatomy: The CAD drawing reveals a specialized trunnion-style mounting configuration. This allows the long cylinder body to float slightly within the chassis housing, absorbing chassis flex and preventing destructive side-loads on the internal seal matrix. The compact 140mm installation offset enables it to fit seamlessly into low-profile mobile crane chassis.
CAD Schematic showcasing the Φ70mm bore, 1237mm stroke, and central trunnion mount design.
4. Core Advantages of EPYY Rack Rams
30MPa Shock Immunity
Crane outriggers face severe shock loads when deployed on uneven ground. Our 30MPa withstand rating ensures the steel barrel remains intact during pressure spikes.
1237mm Precision Stroke
The extensive 1.2-meter reach allows the crane to establish a widely dispersed, ultra-stable lifting footprint, critical for high-altitude telescopic operations.
48kg Compact Integration
Weighing only 48kg, it provides exceptional horizontal pushing power without adding unnecessary parasitic weight to the mobile crane’s chassis.
Anti-Buckling Φ50mm Rod
The thick 50mm rod resists bending stresses effectively when pushing out heavy steel rack beams against high friction in construction environments.
5. Structure and Material Craftsmanship
Reliable horizontal deployment demands superior wear resistance. As a globally trusted Crane Cylinder Manufacturer, we fabricate the EPYY11112022 from ST52.3 precision seamless steel tubing, designed to endure continuous extension/retraction cycles.
The Φ70mm internal bore is CNC skived and roller-burnished. This creates a friction-reducing Ra 0.2µm finish, preventing premature wear on the internal Japanese NOK seals even when hydraulic oil temperatures run high.
- Quenched Φ50mm Rod: Forged from high-yield carbon steel, induction-hardened, and finished with hard chrome to resist scratches from chassis debris.
- Precision Trunnion Mount: The central mounting block is fused via automated multi-pass welding, preventing side-loading fatigue.
- 100% Quality Validation: Every 48kg unit undergoes a rigorous 30MPa hydrostatic test prior to factory dispatch.
Advanced CNC machining and assembly lines ensuring 20MPa operational perfection.
6. Typical Stabilization Scenarios
🏗️ Truck Crane Racks
Driving the horizontal extension of outrigger beams to establish the necessary base width for safe, high-tonnage telescopic lifting.
🚧 Mobile Platforms
Used in aerial work platforms and pump trucks to horizontally deploy stabilizers before elevating personnel or concrete.
⚙️ Industrial Sliding
The 1237mm stroke is ideal for heavy industrial machinery requiring precise, horizontal rack-and-pinion or slide-rail deployment.
The EPYY11112022 enabling rapid and precise horizontal outrigger extension for mobile fleets.
7. Frequently Asked Questions (FAQ)
1. Is the EPYY11112022 compatible with standard truck crane outriggers?
2. Why does the cylinder use a trunnion mount?
3. What is the significance of the 30MPa maximum withstand pressure?
4. Will a Φ50mm rod bend over a 1237mm stroke?
5. Can the seals withstand high hydraulic friction heat?
6. How do I bleed the air from the horizontal rack circuit?
7. Can my maintenance team rebuild this 48kg cylinder locally?
8. Is it treated to resist rust inside the outrigger housing?
9. Do you offer bulk discounts for crane dealerships?
10. How is a precision 48kg component shipped internationally?
Restore Smooth Outrigger Deployment to Your Fleet
Don’t let a jammed horizontal slide halt your lifting operations. Partner with an elite Crane Cylinder Manufacturer to secure the 20MPa deployment precision your chassis demands.
Official Website: tiltcylinder.net | Factory Direct | 100% Pre-Dispatch Hydrostatic Testing
