Products / Custom hydraulics · Design & build

Custom Hydraulic Equipment

Marine and offshore hydraulic cylinders, telescopic cylinders, accumulators, valve blocks, HPUs and complete hydraulic systems — designed, built and tested to your specification, in any size, for deck, splash-zone and subsea service. A lean operation and decades of offshore hydraulics experience keep quality high and cost low.

Request a quotation How we work →

Lead times 4–10 weeks (cylinders) · 8–16 weeks (systems)
Classification support: DNV · BV · ABS · CCS

Any size. Any application.

From an initial concept idea to finished, classed hardware — the full design-to-delivery path stays in-house, including hydraulic integration with our own heave compensators, lifting tools, or third-party equipment.

Design, manufacturing, testing and support under one roof
Classification support on request — DNV, BV, ABS, CCS
Subsea-rated builds with depth and temperature compensation
FMECA participation to improve system reliability
Compatible with biodegradable fluids for sensitive areas
Duplicates of existing units — from drawings, scans or measurements

Offshore & subsea hydraulics · concept to classed hardware

30 m

Maximum length

2.5 m

Maximum diameter

200 t

Maximum weight

1,000 bar

Maximum pressure

Where our hydraulics work

Marine & offshore applications

Purpose-built hydraulics for vessels, rigs and subsea systems — from a single marine cylinder to the complete hydraulic package.

Davits & A-frames

Luffing and deployment cylinders for launch-and-recovery duty.

LARS & ROV handling

Docking, latching and guide cylinders for launch systems.

Telescopic access & gangways

Long-stroke marine telescopic cylinders in tight envelopes.

Riser & drilling tensioners

Tensioner cylinders and gas accumulator packages.

Skidding & jacking

High-force rams and 700 bar jacking cylinders.

Hatch covers & doors

Double-acting cylinders with load holding for weathertight closures.

Winch & sheave systems

Tensioning and pay-out control hydraulics.

Crane & lifting tools

Cylinders for lifting tools, spreader gear and shock absorption.

Subsea functions

Depth-compensated cylinders and accumulators to 3,000 m.

Heave compensation

Custom passive compensators — and our classed product line.

Scope of supply

What we build

Eight product categories cover most of what offshore and subsea hydraulics ask for. If your case does not fit a category, that is usually where we do our best work.

Push / pull cylinders

Single-rod, double-rod and tandem configurations, sized to the duty.

Telescopic cylinders

Multi-stage builds for long-stroke applications in tight envelopes.

Rams & lifting cylinders

High-force units up to 200 t weight for heavy lifting and jacking.

Intensifiers

Pressure intensification for high-pressure test and work functions.

Accumulators

Piston and bladder accumulators, including subsea gas accumulators.

Valves & valve blocks

Custom and standard valves, manifolds and proportional-valve blocks.

Hydraulic power units

Electric, diesel or subsea electro-hydraulic drive, built and tested.

Subsea-rated equipment

Depth- and temperature-compensated designs for long deployments.

Recent deliveries

Built here, working offshore

Real hardware from recent projects — not renders.

500 t drilling tensioner with 8 m stroke, built by Norwegian Dynamics — Drilling tensioner · 500 t / 8 m stroke

Marine telescopic hydraulic cylinders, multi-stage — Multi-stage telescopic cylinders

Batch of double-acting marine hydraulic cylinders ready for delivery — Double-acting marine cylinders · batch delivery

Custom-built passive heave compensator on the workshop floor — Custom-built passive heave compensator

Mechanical spring hydraulic damper for marine service — Mechanical-spring hydraulic damper

Compact hydraulic tensioner with gas accumulator attached — Compact tensioner with gas accumulator

700 bar hydraulic jacking cylinders — 700 bar jacks

Valve block assembly with integrated position sensor — Valve-block assembly with position sensor

Compact marine telescopic hydraulic cylinder — Compact telescopic cylinder

From brief to hardware

How a custom order runs

STEP 01

Define

A functional brief is enough — loads, stroke, envelope, environment. Duplicating an existing unit? Drawings, a scan, or main dimensions all work.

STEP 02

Design

Concept through production drawings, with creative solutions that bring cost down and reliability up. Classification plan agreed here if class is required.

STEP 03

Build & test

Manufacturing and factory acceptance testing to strict offshore and marine standards for materials, safety factors and workmanship — class witness on request.

STEP 04

Deliver & support

Documentation, spares and field support. Typical lead times: 4–10 weeks for cylinders, 8–16 weeks for complete systems including HPU, classification and testing.

Coatings & materials

Rod and surface treatments matched to the service life and environment.

Hard chromeHVOFStainless claddingXylan-coated parts

Sensing & control

Position and pressure feedback integrated in the build, not bolted on.

Internal stroke sensorsExternal stroke sensors0–10 V4–20 mABus pressure sensors

Subsea engineering

Depth and temperature compensation, and wide experience in best practices for designing and testing subsea hydraulic equipment.

Depth compensation3,000 m deliveriesSubsea electro-hydraulic

Safety, testing & sustainability

Equipment conforms with strict offshore and marine standards; we gladly join FMECA sessions. Designs minimise fluid volumes, use robust seal configurations, and run on biodegradable fluids where operations demand it.

FMECAFATBiodegradable fluids

Why buy custom hydraulics from a compensator maker

Built by offshore compensator engineers

We design and class our own heave compensators to DNV-ST-0378 — gas-over-oil cylinders that live below the hook in open sea. The same engineers, the same materials discipline and the same test regime stand behind every custom cylinder, accumulator and HPU we deliver. Norwegian engineering, lean manufacturing at our own facility — that combination is why the price surprises people in the right direction.

See the product line →

3,000 m

delivered subsea hardware — ABS-approved stainless accumulators

500 t / 8 m

drilling tensioner — among our largest custom builds

1,000 bar

maximum design pressure across the custom range

DNV-ST-0378

the standard our own compensator line is designed and classed to

Classification societies we work with

Component suppliers we build with

FAQ

Frequently asked questions

Can you make a duplicate of my existing solution?

Yes. We can duplicate a unit from an overall description and main dimensional information, from measurements or a scan of the existing solution, or from old drawings.

What is your lead time?

From 4 to 20 weeks depending on complexity. Typical: 4–10 weeks for standard cylinders, 8–16 weeks for complete hydraulic systems including power units, classification and factory testing.

Can you deliver classed equipment?

Yes — classification support is available on request, and we routinely work with DNV, BV, ABS and CCS. The classification plan is agreed at the design stage.

Do you integrate hydraulics with heave compensators or third-party equipment?

Yes. For projects with hydraulic integration needs — our own heave compensators, lifting tools, or third-party equipment — we handle the full design-to-delivery path in-house.

Can you build stainless or duplex hydraulic cylinders for marine use?

Yes — stainless and duplex (EN 1.4462) construction is a normal request for splash-zone and permanently wet marine service, with HVOF or laser-clad sliding surfaces for seal life. We also offer coated carbon-steel alternatives when the duty allows it.

Do you make subsea hydraulic cylinders and accumulators?

Yes. We design depth- and temperature-compensated subsea equipment and have delivered ABS-approved stainless gas accumulators rated for 3,000 m water depth at 700 bar.

Can you supply the complete hydraulic system, not just the cylinder?

Yes — complete packages including hydraulic power units (electric, diesel or subsea electro-hydraulic drive), valve blocks, sensors and controls, factory-tested before delivery. Typical lead time for complete systems is 8–16 weeks.

Request further information

Send us your case

Describe the duty — loads, stroke, envelope, environment — or just attach the problem. You will hear back from the engineering team, not a sales queue.

GA drawing · datasheet · quotation — pick what you need in the form