Custom Welded Double-Acting Hydraulic Cylinders for Marine and Offshore Equipment
APEX Hydraulic supplies custom welded double-acting hydraulic cylinders engineered for demanding marine, port, and offshore applications. Our cylinders deliver reliable actuation for hatch covers, ramps, cranes, and more, with corrosion-resistant options.
Key Selling Points
- Saltwater corrosion resistance with marine-grade coatings and stainless-steel component options.
- Reliable load holding with optional counterbalance or pilot-operated check valves for safety.
- Custom mounting and port orientations to fit vessel structure and hose routing.
- Robust welded construction withstands vibration, impact, and continuous operation.
- Position sensing options for synchronized cylinder movement and closed-loop control.
Technical Specifications
| Parameter | Details |
|---|
| Cylinder Structure | Welded-body construction |
| Acting Type | Double Acting |
| Bore Diameter | Customized according to required output force and approved drawing |
| Piston Rod Diameter | Customized according to load, stroke, buckling calculation and approved drawing |
| Stroke Length | Customized according to equipment movement and installation envelope |
| Working Pressure | Customized according to the equipment hydraulic system |
| Mounting | Cross-tube, clevis, pin-eye, trunnion, flange, or custom |
| Hydraulic Ports | SAE ORB, NPT, BSPP, BSPT, metric thread, flange port or customer-specified |
| Surface Protection | Marine-grade coating, zinc-based, or application-specific corrosion protection |
Models and Options
APEX-CWDC Series with custom bore, rod, stroke, and mounting. Options include stainless-steel rod, marine-grade seals, dual cushioning, load-holding valves, position sensors, and special painting.
Materials and Structure
- Barrel: Precision-honed seamless steel tube (corrosion-resistant options)
- Piston Rod: High-strength steel with hard-chrome plating or stainless steel
- Piston: High-strength carbon steel or ductile iron
- Seals: Special moisture-resistant compounds for marine environments
- Wear Rings: Reinforced polymer or bronze
Applications
Suitable for hatch covers, RoRo ramps, stern ramps, ship doors, offshore cranes, telescopic gangways, lifting platforms, and other deck machinery on cargo ships, RoRo vessels, and offshore support vessels.
Customization
Customize bore, rod, stroke, mounting, port orientations, surface protection, and sealing. Provide vessel type, function, existing part number, and operating conditions for a precise solution.
FAQ
Can you supply cylinders with marine-grade certification?
We can engineer to customer-specified marine or classification requirements; material documentation and test reports are available.
What corrosion protection do you offer?
We offer marine-grade coatings, stainless-steel components, and specialized piston-rod treatments.
Do you support synchronized multi-cylinder operation?
Yes, with matched dimensions and optional position sensors.
Can you handle replacement cylinders for existing ship equipment?
Yes, we build to print or engineer from samples and installation drawings.
What testing is done on marine cylinders?
Dimensional, pressure, leakage, and functional stroke testing is standard.
What is your MOQ?
Standard products start at 1 piece; custom projects negotiable.
Inquiry Information
Contact jason@hydraulicapex.com or +86 182-5318-1828. We offer rapid technical response and one-stop procurement support.
