At Skyline, we specialize in manufacturing high-performance telescopic hydraulic cylinders tailored to meet the most rigorous industrial demands. With 30+ years of expertise, we produce multi-stage cylinders with unmatched technical capabilities, from compact mobile equipment to massive heavy-duty systems. Below, we detail our product range with expansive technical parameters to showcase our capacity as a global leader in custom hydraulic solutions.
Types of Telescopic Hydraulic Cylinders & Technical Specifications
1. Single-Acting Telescopic Cylinders
Design: Gravity/spring retraction, hydraulic extension.
Technical Parameters:
- Bore Diameter: 50 mm – 500 mm (Stage 1) | Customizable up to 800 mm for heavy-duty applications.
- Rod Diameter: 25 mm – 400 mm (Final Stage).
- Stroke Length: 1 m – 12 m | Extended configurations up to 20 m for specialized use.
- Pressure Range: 70 bar – 250 bar (Standard) | Up to 350 bar for high-force applications.
- Stages: 2–6 stages, depending on stroke and space constraints.
- Materials: Carbon steel (SAE 1045/4140), stainless steel (316L), or corrosion-resistant alloys.
- Seals: Nitrile (NBR), Polyurethane (PU), or Fluorocarbon (FKM) for extreme temperatures (-40°C to +200°C).
Applications:
- Dump trucks, agricultural trailers, waste compactors.
2. Double-Acting Telescopic Cylinders
Design: Hydraulic extension and retraction for precise control.
Technical Parameters:
- Bore Diameter: 60 mm – 600 mm (Stage 1).
- Rod Diameter: 30 mm – 450 mm (Final Stage).
- Stroke Length: 1.5 m – 15 m | Custom designs up to 25 m for offshore/marine use.
- Pressure Range: 100 bar – 400 bar | **500 bar+** available with reinforced stages.
- Stages: 3–8 stages, optimized for synchronized movement.
- Materials: High-tensile steel (Yield strength 800 MPa+), chrome-plated rods for wear resistance.
- Position Accuracy: ±0.5 mm with integrated position sensors (optional).
Applications:
- Industrial cranes, material handling systems, steel mill presses.
3. Telescopic Cylinder for Dump Truck
Design: Optimized for high-cycle tipping operations.
Technical Parameters:
- Bore Diameter: 80 mm – 600 mm (Stage 1).
- Rod Diameter: 40 mm – 500 mm (Final Stage).
- Stroke Length: 2 m – 18 m | Heavy-duty models up to 30 m for mining haulers.
- Pressure Range: 150 bar – 450 bar.
- Cycle Speed: <15 seconds for full extension/retraction (high-flow valve compatible).
- Materials: Abrasion-resistant steel with hard chrome plating (30–60 μm thickness).
Applications:
- Mining dump trucks, construction tipper trailers.
4. Multi-Stage Cylinder for Lifters
Design: Vertical lifting with synchronized stages for stability.
Technical Parameters:
- Bore Diameter: 40 mm – 400 mm (Stage 1).
- Rod Diameter: 20 mm – 350 mm (Final Stage).
- Stroke Length: 1 m – 10 m | Custom lifts up to 15 m for aerial platforms.
- Pressure Range: 80 bar – 300 bar.
- Safety Features: Mechanical locking pins, overload protection valves.
- Position Feedback: Optional LVDT or magnetostrictive sensors (±0.1 mm accuracy).
Applications:
- Scissor lifts, aerial work platforms, automotive hoists.
5. High-Pressure Telescopic Cylinders
Design: Engineered for extreme force in confined spaces.
Technical Parameters:
- Bore Diameter: 30 mm – 300 mm (Stage 1).
- Rod Diameter: 15 mm – 250 mm (Final Stage).
- Stroke Length: 0.5 m – 8 m.
- Pressure Range: 300 bar – 700 bar | **1,000 bar+** for ultra-high-pressure systems.
- Stages: 2–5 stages with reinforced wall thickness (up to 25 mm per stage).
- Seals: Triple-layered PTFE seals with backup rings for zero-leak performance.
Applications:
- Hydraulic presses, blowout preventers (BOPs), submarine systems.
6. Compact Telescopic Cylinders for Mobile Equipment
Design: Space-saving solutions for tight installations.
Technical Parameters:
- Bore Diameter: 20 mm – 200 mm (Stage 1).
- Rod Diameter: 10 mm – 150 mm (Final Stage).
- Stroke Length: 0.3 m – 5 m.
- Pressure Range: 50 bar – 200 bar.
- Weight Reduction: Aluminum alloy stages (up to 40% lighter than steel).
- Retracted Length: As short as 15% of total stroke length.
Applications:
- Skid steers, forestry equipment, compact agricultural machinery.
7. Offshore/Marine Telescopic Cylinders
Design: Corrosion-resistant construction for harsh environments.
Technical Parameters:
- Bore Diameter: 100 mm – 800 mm (Stage 1).
- Rod Diameter: 50 mm – 600 mm (Final Stage).
- Stroke Length: 5 m – 25 m.
- Materials: Duplex stainless steel (2205/2507), nickel-aluminum bronze.
- Coatings: HVOF-sprayed WC-Co coatings for saltwater resistance.
- Certifications: DNV-GL, ABS, and Lloyds Register compliance.
Applications:
- Ship cranes, offshore platform winches, subsea equipment.
8. Mega-Scale Telescopic Cylinders
Design: For mining, energy, and mega-infrastructure projects.
Technical Parameters:
- Bore Diameter: 300 mm – 1,200 mm (Stage 1).
- Rod Diameter: 150 mm – 900 mm (Final Stage).
- Stroke Length: 10 m – 50 m (multi-stage configurations).
- Pressure Range: 200 bar – 500 bar.
- Force Output: Up to 12,000 kN (1,200 metric tons).
- Custom Features:
- Stage synchronization via PLC control.
- Real-time load monitoring with strain gauges.
Applications:
- Tunnel boring machines, dam gate actuators, mining shovels.
Why Partner With Us?
1. Unmatched Manufacturing Capabilities
- Bore Sizes: 20 mm – 1,200 mm.
- Stroke Lengths: 0.3 m – 50 m+.
- Pressure Ratings: 50 bar – 1,000 bar+.
2. Advanced Engineering Support
- Finite Element Analysis (FEA): Optimize stage thickness and stress distribution.
- Computational Fluid Dynamics (CFD): Ensure efficient hydraulic flow at all stages.
3. Global Certification & Compliance
- ISO 9001, CE, ATEX, and API standards.
- IP66/IP68 ratings for water/dust resistance.
4. Fast Turnaround & Scalability
- Prototype delivery in 4 weeks, mass production in 8–12 weeks.
- Annual production capacity: 50,000+ cylinders.
Industries We Serve
- Mining & Quarrying: Shovels, haul trucks, crushers.
- Energy: Wind turbine adjusters, hydroelectric dam systems.
- Construction: Piling rigs, concrete pumps, crane arms.
- Agriculture: Harvesters, sprayers, grain elevators.
- Marine & Offshore: Ship steering gear, anchor handlers.
Contact Us Today
Leverage Skyline’s expertise to build telescopic hydraulic cylinders that push the limits of performance. Submit your specifications for a free engineering review** and quote.
