{"id":2767,"date":"2026-07-02T06:42:37","date_gmt":"2026-07-02T06:42:37","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/trailing-suction-dredger-mud-door-cylinder\/"},"modified":"2026-07-02T06:42:45","modified_gmt":"2026-07-02T06:42:45","slug":"trailing-suction-dredger-mud-door-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/ar\/product\/trailing-suction-dredger-mud-door-cylinder\/","title":{"rendered":"Trailing Suction Dredger Mud Door Cylinder"},"content":{"rendered":"

<\/p>\n
\n Trailing Suction Dredger<\/span><\/p>\n

Trailing Suction Dredger Mud Door Cylinder<\/h2>\n

The hopper is full. Time to dump. The mud door cylinder pulls open the bottom discharge doors \u2014 2,355 KN of pull force dropping thousands of tonnes of dredged material onto the seabed in a controlled, metered discharge. Then it closes the doors and the dredger goes back to work.<\/p>\n

\n
400mm<\/span>Bore<\/span><\/div>\n
1,400mm<\/span>Stroke<\/span><\/div>\n
2,355 KN<\/span>Pull Force<\/span><\/div>\n
32 MPa<\/span>Pressure<\/span><\/div>\n<\/p><\/div>\n<\/section>\n
\n

Technical Specifications<\/h2>\n
<\/div>\n
\n\n\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>\nTrailing Suction Dredger Mud Door Cylinder<\/td>\n<\/tr>\n
Features<\/td>\nPulling force for opening\/closing the mud door; optional displacement sensor<\/td>\n<\/tr>\n
Bore Diameter<\/td>\n400 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\n200 mm<\/td>\n<\/tr>\n
Stroke<\/td>\n1,400 mm<\/td>\n<\/tr>\n
Pulling Force<\/td>\nMaximum 2,355 KN<\/td>\n<\/tr>\n
Working Pressure<\/td>\nUp to 32 MPa<\/td>\n<\/tr>\n
Sensor<\/td>\nOptional external displacement sensor<\/td>\n<\/tr>\n
Temperature Range<\/td>\n-40 \u00b0C to +100 \u00b0C<\/td>\n<\/tr>\n
Application<\/td>\nTrailing Suction Dredger<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n
\n

What Is the Mud Door on a TSHD?<\/h2>\n
<\/div>\n

\"TSHD<\/p>\n

The mud door is a hinged steel plate (or pair of plates) at the bottom of a trailing suction hopper dredger’s hopper. When closed, the mud door seals the hopper floor, allowing the vessel to carry dredged material during transit. When opened, the mud door swings downward and the cargo falls through the opening onto the seabed \u2014 a process called bottom dumping or bottom discharge.<\/p>\n

The mud door cylinder provides the pull force to open the door against the weight of the cargo pressing down on it, and the push force to close and re-seal it after discharge. On large TSHDs (8,000\u201330,000 m\u00b3 hopper capacity), the cargo weight pressing on the mud door can exceed 15,000 tonnes \u2014 distributed across 4\u20138 mud door cylinders. Each cylinder must contribute its share of the opening force while maintaining synchronised door movement across the full set. Browse the offshore hydraulic cylinder<\/a> range for related TSHD products.<\/p>\n<\/section>\n

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Bottom Discharge vs Overflow Discharge<\/h2>\n
<\/div>\n

TSHDs have two discharge methods. Each uses a different hydraulic cylinder, and the choice depends on the disposal site and environmental requirements:<\/p>\n

\n
\n Bottom Discharge (Mud Door)<\/strong><\/p>\n

The mud door opens and cargo drops through the hull bottom. Fastest discharge method \u2014 5,000 m\u00b3 can be dumped in 3\u201310 minutes. Used when disposal is directly below the vessel (offshore disposal sites, deep-water dumping). The mud door cylinder (#7) provides the opening and closing force.<\/p>\n<\/p><\/div>\n

\n Overflow Discharge (Overflow Tube)<\/strong><\/p>\n

Excess water overflows through a vertical tube in the hopper, carrying fine sediment with it. Used during loading to increase the solids density in the hopper. The overflow cylinder (#8) raises and lowers the tube to control the overflow height and flow rate.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

\n

Displacement Sensor Integration<\/h2>\n
<\/div>\n

\"Trailing<\/p>\n

The mud door cylinder can be equipped with an external displacement sensor that reports door position to the vessel’s automation system in real time. This enables:<\/p>\n