{"id":2773,"date":"2026-07-02T06:42:37","date_gmt":"2026-07-02T06:42:37","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/jack-up-offshore-platform-bolt-cylinder\/"},"modified":"2026-07-02T06:42:49","modified_gmt":"2026-07-02T06:42:49","slug":"jack-up-offshore-platform-bolt-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/zh\/product\/jack-up-offshore-platform-bolt-cylinder\/","title":{"rendered":"Jack-up Offshore Platform Bolt Cylinder"},"content":{"rendered":"

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

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

The smallest cylinder in the offshore range \u2014 but arguably the most critical for safety. A 100 mm bore actuator that drives a steel locking pin into position, mechanically securing a 15,000-tonne platform at height. If the bolt cylinder fails to engage, the platform cannot be locked \u2014 and cannot be left at elevation safely.<\/p>\n

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\u2264100mm<\/span>Bore<\/span><\/div>\n
\u226460mm<\/span>Rod<\/span><\/div>\n
32 MPa<\/span>Pressure<\/span><\/div>\n
Built-in<\/span>Sensor<\/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
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/td>\nJack-up Offshore Platform Bolt Cylinder<\/td>\n<\/tr>\n
Features<\/td>\nInsert and retract cylindrical pins to lock the ring beam<\/td>\n<\/tr>\n
Bore Diameter<\/td>\nUp to 100 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\nUp to 60 mm<\/td>\n<\/tr>\n
Working Pressure<\/td>\nUp to 32 MPa<\/td>\n<\/tr>\n
Sensor<\/td>\nBuilt-in displacement sensor (reduces installation size)<\/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 the Bolt Cylinder Locks the Platform at Height<\/h2>\n
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\"Jack-up<\/p>\n

During jacking, the lifting cylinder (#9) pushes the platform up by one stroke. But hydraulic pressure alone cannot safely hold a 15,000-tonne platform at elevation indefinitely \u2014 a hydraulic leak, power failure, or valve malfunction would allow the platform to drop. The bolt cylinder provides the mechanical lock that eliminates this risk.<\/p>\n

After each lifting stroke, the bolt cylinder extends its rod (which drives a hardened steel pin) into a matching hole in the ring beam. Once the pin is fully engaged, the platform weight transfers from hydraulic pressure to the mechanical pin \u2014 a positive, fail-safe lock that does not depend on hydraulic supply. The lifting cylinder can then safely retract for the next stroke.<\/p>\n

The built-in displacement sensor confirms pin engagement to the jacking control system. The lifting cylinder is not permitted to retract until the sensor verifies that the pin is fully seated. This interlock prevents the catastrophic failure mode of retracting the lifter without the pin engaged. Browse the offshore hydraulic cylinder<\/a> range for the complete jack-up platform system.<\/p>\n<\/section>\n

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Why the Built-in Displacement Sensor Matters<\/h2>\n
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