The design of N- line Tensioner and Wire Rope Tensioner is used to ensure a pre-defined tension to the marine riser and to operate rig motions such as heave, roll or pitch.

Because N- line Tensioner Cylinder is installed directly in the splash zone with partly submerged piston rods, excellent corrosion protection is necessary.
The Ultraplate coating guarantees premium corrosion protection as well as high durability for the continuously moving rods. Hunger DFE seal and relevant elements are used to provide long life properties.
For another special features, it is able to improve the reliability of externally adjustable seal, absolute position measuring system, special ball joints allowing the tilt movement in any direction and the nitrogen loaded accumulators with rupture disc and temperature safety valve.

• Bore Diameter : 560 mm
• Stroke : 15,240 mm
• Rod Diameter : 230 mm
• Load Capacity : 350t per cylinder

Certification according to DNV lifting appliances 2008, DNV standard for certification No. 2.9 hydraulic cylinders and DNV offshore standard E101/D101