{"id":2765,"date":"2026-07-02T06:42:37","date_gmt":"2026-07-02T06:42:37","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/trailing-suction-dredger-hanger-cylinder\/"},"modified":"2026-07-02T06:42:43","modified_gmt":"2026-07-02T06:42:43","slug":"trailing-suction-dredger-hanger-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/fr\/produit\/trailing-suction-dredger-hanger-cylinder\/","title":{"rendered":"Trailing Suction Dredger Hanger Cylinder"},"content":{"rendered":"

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

Trailing Suction Dredger Hanger Cylinder<\/h2>\n

The suction pipe on a trailing dredger hangs 20\u201350 metres from the hull to the seabed \u2014 suspended by a hanger mechanism that the hanger cylinder controls. Deployment, recovery, and everything in between: 3,000 KN of pull force keeps a multi-tonne pipe assembly under control in open-sea conditions.<\/p>\n

\n
450mm<\/span>Bore<\/span><\/div>\n
3,630mm<\/span>Stroke<\/span><\/div>\n
3,000 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
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/td>\nTrailing Suction Dredger Hanger Cylinder<\/td>\n<\/tr>\n
Features<\/td>\nProvide pulling force for retracting and unfolding the suction pipe hanger<\/td>\n<\/tr>\n
Bore Diameter<\/td>\n450 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\n220 mm<\/td>\n<\/tr>\n
Stroke<\/td>\n3,630 mm<\/td>\n<\/tr>\n
Pulling Force<\/td>\nMaximum 3,000 KN<\/td>\n<\/tr>\n
Working Pressure<\/td>\nUp to 32 MPa<\/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 Does the Hanger Cylinder Do on a TSHD?<\/h2>\n
<\/div>\n

\"Trailing<\/p>\n

\n

The suction pipe on a trailing suction hopper dredger extends from the hull down to the seabed \u2014 a distance of 15\u201350 metres depending on water depth. The pipe is not rigid; it consists of articulated sections connected by flexible joints. A hanger mechanism \u2014 essentially a large davit or gantry on the side of the hull \u2014 supports the upper section of the pipe and controls its angle and position.<\/p>\n

The hanger cylinder provides the pulling force (up to 3,000 KN) to retract the suction pipe hanger for transit or recovery, and the pushing force to deploy it for dredging. During dredging, the hanger cylinder holds the pipe at a controlled angle, working together with the heave compensation cylinder (#5) to maintain a stable draghead position on the seabed. When dredging is complete or the vessel needs to transit, the hanger cylinder retracts the pipe assembly up against the hull \u2014 a critical operation in rough seas where the swinging pipe could damage the hull or endanger crew.<\/p>\n

Korea Ever-Power engineers the hanger cylinder for each TSHD model’s specific pipe weight, deployment geometry, and sea-state requirements within the offshore hydraulic cylinder<\/a> range.<\/p>\n<\/div>\n<\/section>\n

\n

Suction Pipe Deployment Sequence<\/h2>\n
<\/div>\n

The hanger cylinder manages the suction pipe through a repeating 4-phase cycle \u2014 typically 3\u20136 times per day on an actively dredging TSHD:<\/p>\n

\n
\n
01<\/div>\n

Deploy<\/strong><\/p>\n

Cylinder extends to swing the hanger outboard. The suction pipe lowers toward the water under controlled speed. Lowering rate is metered to prevent free-fall.<\/p>\n<\/p><\/div>\n

\n
02<\/div>\n

Dredge<\/strong><\/p>\n

The hanger cylinder holds position while the heave compensation cylinder (#5) absorbs wave motion. The hanger provides a stable pivot point for the pipe’s angular movement.<\/p>\n<\/p><\/div>\n

\n
03<\/div>\n

Recover<\/strong><\/p>\n

Cylinder retracts with up to 3,000 KN of pull force, hauling the pipe assembly up against its own weight plus the weight of water and sediment trapped inside. This is the peak-force phase.<\/p>\n<\/p><\/div>\n

\n
04<\/div>\n

Stow<\/strong><\/p>\n

The pipe is secured against the hull for transit. Load-holding valves lock the hanger in position \u2014 preventing the pipe from swinging in rough seas during the voyage to the disposal site.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

\n

Critical Design Requirements for TSHD Hanger Cylinders<\/h2>\n
<\/div>\n

\"Trailing<\/p>\n

The hanger cylinder operates in the most exposed position on a trailing suction dredger \u2014 outboard on the vessel’s side, directly subject to waves, wind, and saltwater immersion. Design requirements go beyond standard marine cylinders:<\/p>\n

\n
\n Dynamic Load Rating<\/strong><\/p>\n

The hanger supports a swinging suction pipe (5\u201330 tonnes depending on TSHD size) in open-sea conditions. The pipe pendulates with wave motion, creating dynamic loads that cycle continuously. The cylinder’s pin joints, barrel, and rod must be rated for fatigue \u2014 not just static load.<\/p>\n<\/p><\/div>\n

\n Emergency Pipe Recovery<\/strong><\/p>\n

If the dredger must stop suddenly (engine failure, collision avoidance), the suction pipe must be recovered rapidly before it drags on the seabed or tangles with the vessel. The hanger cylinder’s retraction speed and force must handle emergency recovery under worse-case conditions \u2014 full pipe weight plus dynamic wave loading.<\/p>\n<\/p><\/div>\n

\n Corrosion in the Splash Zone<\/strong><\/p>\n

The hanger cylinder operates in the worst corrosion zone on a vessel \u2014 the splash zone where alternating wet\/dry cycles accelerate corrosion 5\u201310x faster than continuous immersion. Laser-clad or ceramic rod coating, FKM seals, and marine-grade epoxy barrel coating are standard for hanger cylinder installations.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

\n

Supply and Service Capabilities<\/h2>\n
<\/div>\n
\n
\n New-Build Supply<\/strong><\/p>\n

Complete hanger cylinder sets for new-build TSHDs, designed from the vessel’s GA drawings and suction pipe specifications. Lead time: 8\u201312 weeks from drawing approval.<\/p>\n<\/p><\/div>\n

\n Retrofit Replacement<\/strong><\/p>\n

Form-fit-function replacements for existing TSHDs \u2014 reverse-engineered from originals or from vessel drawings. Upgraded seals, surface treatment, and valve integration included.<\/p>\n<\/p><\/div>\n

\n Seal Kits and Spare Parts<\/strong><\/p>\n

Pre-packaged seal kits for field replacement. Each kit contains the complete seal set for one cylinder \u2014 rod seal, piston seal, wiper, guide rings, O-rings \u2014 packed in a labelled marine-duty container.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

\n

Hanger Cylinder OEM & ODM<\/h2>\n
<\/div>\n
\n
\n
What You Provide<\/strong><\/div>\n
\n

Vessel model, mechanism drawing, required force (push\/pull), bore\/rod\/stroke, system pressure, operating environment, classification society requirement, and surface treatment preference.<\/p>\n<\/div>\n<\/div>\n

\n
What the Factory Delivers<\/strong><\/div>\n
\n

Complete cylinder set with engineering drawing, anti-corrosion treatment, saltwater seals, integrated valves, test certificates. Classification documentation on request. Seal kits included. Browse the full offshore hydraulic cylinder<\/a> range.<\/p>\n<\/div>\n<\/div><\/div>\n

\"Korea
\n<\/section>\n

\n \"Hydraulic
\n<\/section>\n
\n

Frequently Asked Questions<\/h2>\n
<\/div>\n

Common questions about the trailing suction dredger hanger cylinder answered by Korea Ever-Power engineers:<\/p>\n

\n
\n

Can this cylinder be retrofitted on an existing vessel?<\/h3>\n

Yes. Korea Ever-Power manufactures replacement cylinders for existing dredging vessels, including reverse-engineering from worn-out originals or from the vessel’s original equipment drawings.<\/p>\n<\/div>\n

\n

What classification society approvals are available?<\/h3>\n

Bureau Veritas (BV), DNV, Lloyd’s Register (LR), ABS, and CCS documentation and witnessed testing can be provided on request.<\/p>\n<\/div>\n

\n

What surface treatment options are available for saltwater service?<\/h3>\n

Ceramic spraying (HVOF), laser cladding (Inconel\/Stellite\/nickel-chrome), and standard hard chrome plating. Selection depends on the operating environment, maintenance schedule, and target service life.<\/p>\n<\/div>\n

\n

What is the typical lead time?<\/h3>\n

Standard lead time is 8\u201312 weeks from drawing approval. Emergency\/rush orders for operating vessels can be accommodated in 5\u20136 weeks. Contact the engineering team for current availability.<\/p>\n<\/div>\n

\n

Can integrated valves be included?<\/h3>\n

Yes \u2014 load-holding valves, counterbalance valves, sequence valves, relief valves, check valves, and pressure measuring joints can be machined directly into the cylinder body. This reduces external piping, potential leak points, and installation time. Browse mobile machinery hydraulic cylinders<\/a> and industrial engineering hydraulic cylinders<\/a> for related heavy-duty applications.<\/p>\n<\/div><\/div>\n<\/section>\n

\n

What Our Customers Say<\/h2>\n
<\/div>\n
\n
\n
\u2605\u2605\u2605\u2605\u2605<\/span>Jun 2026<\/span><\/div>\n

“The hanger cylinders on our 12,000 m\u00b3 TSHD have been in service for 14 months. The ceramic-coated rods are handling the constant saltwater spray without any visible surface degradation. Previous hard-chrome rods on the same vessel showed pitting within 8 months.”<\/p>\n

Capt. M. Andersen<\/strong> \u2014 Fleet Captain, Danish dredging company<\/p>\n<\/p><\/div>\n

\n
\u2605\u2605\u2605\u2605\u2605<\/span>Feb 2026<\/span><\/div>\n

“We needed 2 hanger cylinders with exact dimensional match to our Vosta LMG suction pipe frame. Korea Ever-Power worked from our GA drawings and delivered cylinders that bolted straight in without any adapter plates. Good dimensional accuracy on the mounting pins.”<\/p>\n

G. Koopman<\/strong> \u2014 Maintenance Manager, Netherlands<\/p>\n<\/p><\/div>\n

\n
\u2605\u2605\u2605\u2605\u2606<\/span>Nov 2025<\/span><\/div>\n

“Hanger cylinders for a mid-size TSHD (3,500 m\u00b3). Performance is as specified. Delivery took 8 weeks \u2014 we were hoping for 6. The rod surface finish (Ra 0.2 \u00b5m measured) is very good. Seal leakage: zero after 2,400 operating hours.”<\/p>\n

A. Diallo<\/strong> \u2014 Chief Engineer, Senegal<\/p>\n<\/p><\/div>\n

\n
\u2605\u2605\u2605\u2605\u2605<\/span>Aug 2025<\/span><\/div>\n

“Second order from Korea Ever-Power \u2014 hanger cylinders for our second TSHD. Same spec as the first order (2024), same quality. Having a consistent, reliable supply source for dredger hydraulic cylinders is worth a lot when you operate vessels 300+ days per year.”<\/p>\n

Y. Takahashi<\/strong> \u2014 Procurement Manager, Japanese dredging contractor<\/p>\n<\/p><\/div>\n

\n
\u2605\u2605\u2605\u2605\u2605<\/span>Apr 2025<\/span><\/div>\n

“The load-holding valves integrated into the hanger cylinder body eliminated the risk of uncontrolled pipe drop during a hydraulic supply failure. This was a class society requirement (DNV) that our previous external valve arrangement did not fully satisfy. The integrated design passed the DNV survey without comment.”<\/p>\n

Eng. C. Olsen<\/strong> \u2014 Classification Compliance, Norway<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

\n

Related Hydraulic Cylinder Categories<\/h2>\n
<\/div>\n
\n
<\/p>\n
\"Mobile<\/p>\n
Mobile Machinery Cylinders \u2192<\/div>\n<\/div>\n

<\/a><\/div>\n

<\/p>\n
\"Aerial<\/p>\n
Aerial Work Vehicle Cylinders \u2192<\/div>\n<\/div>\n

<\/a><\/div>\n

<\/p>\n
\"Telescopic<\/p>\n
Telescopic Cylinders \u2192<\/div>\n<\/div>\n

<\/a><\/div>\n

<\/p>\n
\"Industrial<\/p>\n
Industrial Engineering Cylinders \u2192<\/div>\n<\/div>\n

<\/a><\/div>\n

<\/p>\n
\"Forklift<\/p>\n
Forklift Cylinders \u2192<\/div>\n<\/div>\n

<\/a><\/div>\n<\/p><\/div>\n<\/section>\n

<\/main><\/p>","protected":false},"excerpt":{"rendered":"

Trailing suction dredger hanger cylinder \u2014 the hydraulic actuator that deploys and recovers the suction pipe hanger assembly on trailing suction hopper dredgers. Bore 450 mm, rod 220 mm, stroke 3,630 mm, pull force up to 3,000 KN, 32 MPa. The hanger supports and positions the suction pipe between the hull and the seabed. Korea Ever-Power. ISO 9001. OEM & ODM.<\/div>","protected":false},"featured_media":2766,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[855],"product_tag":[],"class_list":["post-2765","product","type-product","status-publish","has-post-thumbnail","product_cat-offshore-hydraulic-cylinders","pa_editor-cxm","first","instock","product-type-simple"],"_links":{"self":[{"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product\/2765","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/comments?post=2765"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/media\/2766"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/media?parent=2765"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product_brand?post=2765"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product_cat?post=2765"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product_tag?post=2765"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}