Customized hydraulic cylinders for critical applications worldwide

DELLNER HYDRATECH is an expert in the design and manufacture of customized hydraulic cylinders for special purposes and applications operating in the most difficult environments, while also offering standard programs for multiple industries. From compact replacement cylinders to large-bore specialty options, we ensure every cylinder we create or repair surpasses expectations.

Hydraulic Cylinders

Customized Manufacturing

From precision-crafted replacement cylinders to large-bore specialty solutions, we design and repair every hydraulic cylinder to exceed expectations. Our expertise lies in delivering innovative, high-performance solutions for the most demanding applications across industries such as marine cranes, drilling rigs, dredging vessels, mining equipment, and hydropower.

  • Bore Sizes up to 30” (760mm)
  • Strokes up to 60 ft (18m)
  • Test Pressures up to 10,000 psi
  • ASME approved weld procedures
  • CAD Designing
  • Material Traceability
  • Prototype Development
  • Full Paint Room
  • Sand Blast Room

Hydraulic Cylinders

Cylinders for Challenging Environments
Cylinders for Challenging Environments
Double Acting

Engineered for use in Hydraulic Systems for energy storage, emergency back-up, dampening of pump pulsations, flow stablizing, and shock absorbing.

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Cylinders for Lifting or Control
Cylinders for Lifting or Control
Double Acting

Designed for various applications, these systems play a critical role in hydropower projects by managing water levels essential for flood control and facilitating horizontal shifting gates in laundry presses in industrial settings.

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Cylinders with Various Mounting Styles
Cylinders with Various Mounting Styles
Double Acting with Yoke

Utilized in a range of applications, including steering systems and manufacturing machinery, such as presses, stamping machines, and robotic arms. These components enable precise and controlled movements essential for manufacturing processes, suspension systems, and hydraulic lifts. 

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Heavy Load Cylinders
Heavy Load Cylinders
Double Acting

Main and Knuckle Boom Cylinders for crane and lifting applications, such as jack-ups, A-frames, dredges, and M.M. These robust cylinders are designed for offshore and marine use, featuring high corrosion-resistant coatings, a redundant seal system, and bolted tops for easy maintenance. Additionally, these cylinders are also meticulously prepared for classification standards.

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Telescopic Cylinders
Telescopic Cylinders
TWO-STAGE TELESCOPIC

Ideal for long strokes with limited space, telescopic cylinders are commonly utilized in mast raising, platform lifts, dump hoists, dump lifts, and pack/eject functions. If your application requires a linear force exerted over an extended distance, these cylinders are an outstanding option for various types of equipment, including dump trucks and garbage trucks.

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Triple Cylinders
Triple Cylinders
Triple Cylinder

Designed to enable a significantly longer stroke length while maintaining a compact retracted size, making it ideal for tight spaces and high force generation.

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Wire Line Riser Tensioners
Wire Line Riser Tensioners
Double Acting

Highly customized tension cylinder coupled with two accumulators and an advanced valve block used to accommodate the relative between a drill vessel floating on the surface of the sea and the fixed riser/drill line at the seabed.

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Global Certifications

Achieving industry certifications reflects our commitment to exceptional manufacturing, ensuring the highest standards of quality, precision, and innovation in every product we deliver.

  • DNV
  • BV
  • ABS
  • PED
  • Lloyds
  • SME
*May be obtained upon request

Repair, Overhaul, Inspect & Upgrade

DELLNER HYDRATECH is committed to maintaining the quality and performance of our manufactured products through expert repair, inspections, complete overhauls, and strategic upgrades. Our dedicated team ensures that each product continues to meet industry standards, enhancing reliability, efficiency, and longevity, maximizing your investment.

  • DELLNER HYDRATECH’s comprehensive service offering includes:
    Expand
    • Repair, overhaul, or upgrade of both our cylinders and all other brands
    • Comprehensive inspection and analysis of all components conducted by experienced hydraulic experts
    • Expert service teams with extensive experience and access to Dellner Hydratech’s global knowledge repository
    • Complete in-house machining, sandblasting, painting, welding, and assembly capabilities
    • Service tools for enhanced efficiency
    • Established network of global suppliers and workshops worldwide
    • Overhaul, retrofit, and repair to original specifications or upgrades
    • Detailed documentation featuring a thorough inspection report outlining all findings
    • Reengineering as necessary to extend cylinder life
    • Refurbishment services for cylinders and valve blocks
    • Replacement of all fittings
    • Pressure and functional testing
    • Routine seal replacements or upgrades to the latest seal technology
    • Innovative surface treatments and rod finishes, including:
      • Hard Chrome: Single or Double Layer
      • Nickel + Hard Chrome
      • Hard Chrome on Stainless Steel
      • HVOF
      • Ceramic
      • Laser Cladding
      • Stainless Steel