{"id":2771,"date":"2026-07-02T06:42:37","date_gmt":"2026-07-02T06:42:37","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/jack-up-offshore-platform-lifting-cylinder\/"},"modified":"2026-07-02T06:42:47","modified_gmt":"2026-07-02T06:42:47","slug":"jack-up-offshore-platform-lifting-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/da\/vare\/jack-up-offshore-platform-lifting-cylinder\/","title":{"rendered":"Jack-up Offshore Platform Lifting Cylinder"},"content":{"rendered":"

<\/p>\n
\n Jack-up Offshore Platform<\/span><\/p>\n

Jack-up Offshore Platform Lifting Cylinder<\/h2>\n

Lifting a 15,000-tonne platform out of the sea \u2014 one 2.15-metre stroke at a time. The lifting cylinder pushes the ring beam upward along each leg, raising the entire platform above the wave zone. The largest bore (700 mm) in the offshore hydraulic cylinder range.<\/p>\n

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\u2264700mm<\/span>Largest Bore<\/span><\/div>\n
\u2264420mm<\/span>Rod<\/span><\/div>\n
\u22642,150mm<\/span>Stroke<\/span><\/div>\n
32 MPa<\/span>Pressure<\/span><\/div>\n<\/p><\/div>\n<\/section>\n
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Technical Specifications<\/h2>\n
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\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/td>\nJack-up Offshore Platform Lifting Cylinder<\/td>\n<\/tr>\n
Features<\/td>\nLifting and lowering the platform by driving the ring beam<\/td>\n<\/tr>\n
Bore Diameter<\/td>\nUp to 700 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\nUp to 420 mm<\/td>\n<\/tr>\n
Stroke<\/td>\nUp to 2,150 mm<\/td>\n<\/tr>\n
Working Pressure<\/td>\nUp to 32 MPa<\/td>\n<\/tr>\n
Sensor<\/td>\nExternal displacement sensor configurable<\/td>\n<\/tr>\n
Application<\/td>\nJack-up Offshore Platform<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n
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How Jack-up Platform Jacking Works<\/h2>\n
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\"Jack-up<\/p>\n

A jack-up platform has 3\u20134 vertical steel legs that can be lowered through the hull to the seabed. Once the legs are standing on the seabed, the lifting cylinders push the platform hull upward along the legs \u2014 lifting the entire structure out of the water and above the wave zone. This process is called “jacking up” and typically raises the platform 10\u201330 metres above sea level.<\/p>\n

Each lifting cylinder has a stroke of up to 2,150 mm. The platform is lifted in incremental steps: the cylinder extends one full stroke (2.15 m), then a locking mechanism (the bolt cylinder, #10) pins the ring beam in place while the lifting cylinder retracts for the next stroke. This step-and-lock sequence repeats until the platform reaches the desired elevation.<\/p>\n

The 700 mm bore is the largest in the offshore hydraulic cylinder<\/a> range \u2014 generating the massive thrust needed to lift thousands of tonnes of platform structure, equipment, and crew accommodation against gravity and wind loading.<\/p>\n<\/section>\n

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Why the Lifting Cylinder Works with the Bolt Cylinder<\/h2>\n
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The lifting system uses two cylinder types working in precise coordination \u2014 if either fails, the platform cannot move safely:<\/p>\n

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\n Lifting Cylinder (#9) \u2014 the muscle<\/strong><\/p>\n

Pushes the ring beam upward by one stroke (2,150 mm), raising the platform. Bore 700 mm provides the massive force required. The cylinder does the heavy lifting \u2014 but cannot hold the platform at height by itself (hydraulic lock is not considered safe for long-term load holding).<\/p>\n<\/p><\/div>\n

\n Bolt Cylinder (#10) \u2014 the lock<\/strong><\/p>\n

Inserts a steel pin through the ring beam to mechanically lock the platform at the current height. Once the pin is engaged, the lifting cylinder can safely retract without the platform dropping. The pin carries the platform weight, not the hydraulic pressure.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

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Safety and Reliability Features<\/h2>\n
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\"Jack-up<\/p>\n