Riser Tensioner

Assembly

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Direct-acting hydraulic tensioner holding the riser in near-constant tension as the ship heaves above it, backed by high-pressure air-over-oil accumulators.

Direct parts	5
Total parts	40
Used in	1 assembly
Class	Assembly

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Direct-acting hydraulic tensioner holding the riser in near-constant tension as the ship heaves above it, backed by high-pressure air-over-oil accumulators. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Riser Tensioner parts and their functions

5 top-level parts · 40 parts in total · full bill of materials below

Riser Tensioner parts diagram: 1 hydraulic cylinder, 2 hydraulic accumulator, 3 hydraulic control valve, 4 tensioner sheave & wireline, 5 pressure sensor. 40 parts in 5 top-level items. — Riser Tensioner parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Hydraulic Cylinder 4 parts	1×	Direct-acting tension cylinder
2	Hydraulic Accumulator 3 parts	4×	Air-pressure vessels
3	Hydraulic Control Valve 4 parts	2×	Spool or poppet valve directing high-pressure oil to a function; a body, spool and solenoid pilot with its seals.
4	Tensioner Sheave & Wireline	2×	Tension sheaves and wireline
5	Pressure Sensor	2×	Transduces fluid or gas pressure into an electrical signal.

3D model

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Build & assembly graph

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Bill of materials for Riser Tensioner

5 top-level lines · 16 rows shown · 40 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Hydraulic Cylinder 4 parts	drillship-hydraulic-cylinder	1×	1	8	assembly
1.1	Cylinder Barrel	drillship-cylinder-barrel	1×	1	·	part
1.2	Piston Rod	drillship-piston-rod	1×	1	·	part
1.3	O-Ring Set	oring-set	4×	4	·	part
1.4	Oil Seal	oil-seal	2×	2	·	part
2	Hydraulic Accumulator 3 parts	drillship-accumulator	4×	4	4	assembly
2.1	Accumulator Shell	drillship-accumulator-shell	1×	4	·	part
2.2	Accumulator Bladder	drillship-accumulator-bladder	1×	4	·	part
2.3	O-Ring Set	oring-set	2×	8	·	part
3	Hydraulic Control Valve 4 parts	drillship-hydraulic-valve	2×	2	6	assembly
3.1	Valve Body	drillship-valve-body	1×	2	·	part
3.2	Valve Spool	drillship-valve-spool	1×	2	·	part
3.3	Solenoid Coil	drillship-solenoid-coil	1×	2	·	part
3.4	O-Ring Set	oring-set	3×	6	·	part
4	Tensioner Sheave & Wireline	drillship-sheave-wireline	2×	2	·	part
5	Pressure Sensor	pressure-sensor	2×	2	·	part

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Where the riser tensioner is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Oil, Gas & Process 1 Deepwater Drillship

Used in 1 assembly

Marine Riser System

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks