5-Stage Front End Telescopic Hydraulic Cylinder for 49-Ton Dump Trucks
Product Description
Product Detail
I. The 6.18-Meter High-Angle Lift: Why Long-Stroke Tippers Roll Over
When raising a 40-foot aluminum or steel dump body to a 50-degree angle to unload sticky asphalt or wet clay, the extended cylinder reaches over 20 feet into the air. If the tipper encounters sudden crosswinds, uneven soft ground, or shifting cargo, lateral bending loads on the upper stages can deform standard telescopic sleeves and cause catastrophic vehicle rollover.
The FE-5TG-E169x6180 5-Stage Front End Telescopic Hydraulic Cylinder for 49-Ton Dump Trucks is engineered specifically to resist severe lateral sway while delivering 49 metric tons of breakout tipping capacity. Built with an optimized stage diameter hierarchy (169 mm down to 95 mm) and wide internal bearing overlaps, this front-end actuator packs 6,180 mm (243.3 inches) of usable elevation stroke into a compact 1,505 mm closed mounting envelope.
| Technical Parameter | Catalog Specification / Workshop Baseline |
|---|---|
| Model Designation | FE-5TG-E169*6180 (FE-5TG-E169x6180) |
| Equipment Classification | Dump Truck Front Tipping Cylinder - FE / FC Series |
| Application Scope | Heavy-Duty Tipper Semi-Trailers & Tri-Axle Tippers |
| Number of Telescopic Stages | 5 Active Precision-Machined Expansion Stages |
| Stage Bore Diameters (mm) | 169 mm / 158 mm / 136 mm / 115 mm / 95 mm |
| Total Working Stroke | 6,180 mm (6.18 meters / 243.3 inches) |
| Retracted Closed Length | 1,505 mm (59.25 inches pin-to-trunnion centerline) |
| Rated Tipping Load Capacity | 49.0 Metric Tons (108,000 lbs payload class) |
| Rated Working Pressure | 16.0 MPa (160 bar / 2,320 psi nominal) |
| Proof Test Pressure Limit | Up to 25.0 MPa (250 bar / 3,625 psi) |
| Stage Surface Treatment | Micro-crack-free Hard Chrome Plating (≥25 μm) |
| Sealing & Guide Architecture | Dual low-friction rod seals & heavy guide rings |
| Top Mounting Connection | Maintenance-free high-performance spherical bearing |
| Catalog Page Reference | HCIC 2026 Master Product Catalog, Page 19 |
II. Direct Technical Answers for Trailer Builders
How does the 169mm–95mm stage progression manage pressure spikes during extension?
As each stage extends, the effective piston area decreases, causing hydraulic pressure to step up progressively from the large 169 mm first stage down to the final 95 mm top stage. The FE-5TG-E169x6180 5-Stage Front End Telescopic Hydraulic Cylinder for 49-Ton Dump Trucks utilizes engineered transition dampening and precision step ports. This eliminates hydraulic shudder and ensures smooth, continuous acceleration as the tipper bed transitions from high-breakout initial lift to rapid high-angle material discharge.
What prevents oil weeping between stages in cold morning operations?
Multi-stage telescopic cylinders frequently suffer external oil weeping when transitioning from cold outdoor parking to rapid cycling. HCIC equips each stage with high-elasticity polyurethane U-cup primary seals backed by secondary PTFE step seals and aggressive dirt scrapers rated for -40°C to +100°C. This dual-barrier seal package maintains constant radial lip pre-load even when the thin-walled stages flex slightly under full 49-ton load.
III. Structural Defenses Against Lateral Deflection & Stage Galling
Operating on uneven jobsite dirt paths imposes severe bending moments on extended telescopic sleeves.
The FE-5TG-E169x6180 5-Stage Front End Telescopic Hydraulic Cylinder for 49-Ton Dump Trucks incorporates three critical structural safeguards:
| Feature | Description |
|---|---|
| Maintenance-Free Spherical Eye | Absorbs ±8° chassis torsion & bed twisting |
| Extra-Wide Stage Overlap (HD) | Distributes side-wind loads across guide bands |
| 25 μm Hard Chrome Barrier | Prevents micro-scuffing from airborne road grit |
- Self-Aligning Spherical Plain Bearings: The top rod eye houses a maintenance-free spherical plain bearing that articulates up to ±8°, decoupling trailer chassis twist from the internal telescopic sleeves.
- Heavy-Duty Stage Overlap Geometry: Extended overlap zones between adjacent stages ensure that when the cylinder reaches full 6.18-meter extension, the internal phenolic wear rings maintain maximum contact surface area, preventing metal-to-metal tube scoring.
- Roller-Burnished Inner & Hard-Chromed Outer Surfaces: Each seamless alloy steel tube is skived and roller burnished on the ID and plated with a minimum 25 μm dense hard-chrome layer on the OD to resist abrasive slurry, salt spray, and hydraulic fluid breakdown.
IV. Hydraulic System Integration & Wet Kit Sizing Guide
To achieve optimal tipping speed and pump longevity when installing the FE-5TG-E169x6180 on a commercial tractor unit:
- Hydraulic Reservoir Volume: Because a 5-stage 6,180 mm cylinder displaces substantial oil volume during full extension, ensure your hydraulic tank has at least 25% reserve capacity above the cylinder’s total stroke oil volume to prevent pump cavitation.
- Proportional Tip-Control Valve: Install a cab-controlled pneumatic or proportional pilot tipping valve with an integrated high-pressure relief setting calibrated to 16 MPa (160 bar) and a return-line filter rated at 10–25 microns.
- Lowering Speed Control: Adjust the return flow restrictor to prevent "free-fall" slamming when the empty dump body lowers, protecting trailer chassis crossmembers.
V. FAQ:
VI. Direct Factory Supply & Engineering Support
Ready to integrate the FE-5TG-E169x6180 5-Stage Front End Telescopic Hydraulic Cylinder for 49-Ton Dump Trucks into your trailer production line?
Contact HCIC’s dedicated heavy tipping vehicle engineering desk in Jinan. We provide direct container-load OEM volume pricing, complete mounting trunnion bracket sets, hydraulic wet kit packages, and certified 3D STEP CAD models for body design verification within 24 hours.