Hydroll

What Hydroll does

Hydroll Oy is a privately held Finnish industrial company founded in 1998 and headquartered in Lapua, Finland, that designs and manufactures hydraulic piston accumulators for demanding industrial applications. It operates as a subsidiary of the Etola Group, a family-owned Finnish industrial conglomerate of approximately 30 specialist companies, 1,500 employees, and approximately €400 million in cumulative annual turnover. The company is, by its own claim, the only firm in the world purely specialized in piston accumulator technology, deliberately excluding bladder and membrane accumulator types.

The product portfolio is built around three piston accumulator families — HPS Single Action (HPS 10 and HPS 14, 50-250 mm bore, 0.1-100 L, up to 650 bar), HPD Double Action (dual-piston, 50-80 mm bore, 0.5-5 L), and HDC Double Chamber (dual gas chamber, 50-125 mm bore, 0.5-10 L) — supported by a full accessory line (HP Clamps, seal kits, GV-1620 standard and arctic gas valves, HPCK charging kit), plug-and-play Accumulator Stations, and engineering services from prototype through serial production. The technology differentiates on a 10:1 compression ratio (versus 4:1 for bladder and 6:1 for membrane), very low gas permeation, -45°C to +100°C temperature range, flexible mounting, and integrated pressure and piston position sensing.

Hydroll sells directly to enterprise customers — wind turbine OEMs and operators, mobile equipment OEMs (mining, construction, agriculture, forestry), marine and offshore vessel operators, solar tracking system manufacturers, and industrial hydraulics customers — via a B2B field sales motion out of its Lapua manufacturing facility. Revenue is generated from quote-based hardware sales, integrated accumulator station sales, and engineering services, with over 200,000 piston accumulators delivered into more than 20,000 on- and offshore wind turbines globally. The company holds ISO 9001:2015, ISO 14001:2015, DNV type approval and DNV approval of manufacturer, and PED Module H and H1 certifications.

Name

Hydroll

Legal name

Hydroll Oy

Website

https://hydroll.com

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

Hydroll Oy is a privately held Finnish manufacturer of hydropneumatic piston accumulators, the world's only company purely specialized in this technology. It sells engineered accumulator hardware, integrated accumulator stations, and engineering services directly to wind, mobile equipment, marine, solar, and industrial OEM customers worldwide.

Ownership category

akta.pro rank

Product category

Industrial Hydraulic Accumulators

NAICS

Fluid Power Cylinder and Actuator Manufacturing (333995), Fluid Power Valve and Hose Fitting Manufacturing (332912)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

Hydraulic Power Units & Systems (HPUs, Manifolds, Integrated Circuits) (IMAHAGAB)

Keywords

• Hydraulic piston accumulators
• Hydropneumatic accumulators
• Wind turbine hydraulics
• Mobile equipment hydraulics
• Industrial hydraulic components

Headquarters

HQ city

Lapua

HQ country

Finland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Piston Accumulator Sales: Hydroll generates revenue through the direct sale of piston accumulators and related hydraulic system products to industrial customers. As the only company in the world purely specialized in high-quality piston accumulators, Hydroll sells hardware products (accumulators, accessories, stations) and associated engineering services. Products are sold directly to OEMs and end-user companies in mobile equipment, renewable energy, marine/offshore, and industrial sectors worldwide.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Hydroll Oy designs and manufactures hydraulic piston accumulators for industrial applications. The company specializes exclusively in piston accumulators (as opposed to bladder or membrane types), offering three product families: HPS (Single Action), HPD (Double Action), and HDC (Double Chamber). These are complemented by accessories (clamps, seal kits, gas valves, charging kits), pre-assembled accumulator stations, and engineering services for sizing and integration support.

Product overview

Hydroll offers the widest available portfolio of piston accumulator solutions, products, and related services. The core offering consists of three piston accumulator product families: HPS Single Action (including HPS 10 and HPS 14), HPD Double Action, and HDC Double Chamber. These are complemented by a comprehensive range of accessories including clamps, seal kits, gas valves, and charging kits, as well as accumulator stations and engineering services. The product line spans from compact 0.1L units to large 100L accumulators, serving applications in wind turbines, solar energy, mobile equipment, marine/offshore, and industrial hydraulics. Founded in 1998, the company operates state-of-the-art production facilities in Lapua, Finland.

Differentiator

Problem solved

Functional benefit

Products and services

• HPS – Single Action Piston Accumulator Hydropneumatic single-action piston accumulator product line consisting of HPS 10 (50-250 mm ID, 250-650 bar max working pressure, 0.1-100 L volume) and HPS 14 (50-90 mm ID, 250-350 bar, 0.1-5 L volume, cost-efficient non-repairable design). Designed for wind turbines, solar panels, mobile equipment boom suspension, hybrid systems, emergency storage, and industrial hydraulics.
• HPD – Double Action Piston Accumulator Double-action hydropneumatic piston accumulator that combines two accumulator functions into one product. Features 50-80 mm ID, 0.5-5 L volume, with fluid connection in both end flanges and gas contained between two pistons. Enables suspension of two movements by a single accumulator. Used for boom suspensions, loaders, and forest harvesters.
• HDC – Double Chamber Piston Accumulator Double-chamber hydropneumatic piston accumulator with dual gas chambers and pre-charged pressure difference for smooth suspension of variable payloads. Features 50-125 mm ID, 250 bar max working pressure, 0.5-10 L volume. Space-saving structure based on proven HPS series design that combines two accumulators into one.
• HP Clamps Mounting clamps for securely installing accumulators into position. Available in multiple sizes (60, 90, 95, 120, 165, 185, 205, 230, 300 mm) with one-piece and two-piece models to fit various cylinder diameters.
• Seal Kits Replacement seal kits for HPS piston accumulators. Each kit includes piston seal, piston guide ring, O-ring seals, and support rings. Available for accumulator sizes from HPS 50 to HPS 250.
• Gas Valves Gas valves for piston accumulators including standard GV-1620 (M16x2, -25°C to +100°C) and Arctic versions (M16x1.5 and M28x1.5, -45°C to +80°C with stainless steel body and cap). Compatible with nitrogen (N2) and mineral oil-based hydraulic fluids.
• HPCK Charging Kit Charging kit required for checking pre-charge pressure in piston accumulators. Includes connector to nitrogen gas bottle, valve body with pressure gauge and gas release valve, 5m hose with end connectors, and gas valve adapter. Compatible with GV-1620 gas valve with M16x2mm thread.
• Accumulator Stations Pre-configured accumulator stations with frame, piping, accumulators with necessary valves and safety devices. Plug-and-play modules tailored to customer requirements for easy installation in industrial hydraulic systems.
• Engineering Services And Tools Application analyses for accumulator solutions, sizing services performed in collaboration with customers, and technical support from prototype through 0-series to serial production.

Quantifiable outcome

• Energy savings of 20-30% or more through hydraulic system optimization
• +5 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• Etola Group (Etola-yhtiöt)coreStrategic or Co-development PartnerHydroll is a member of the Etola Group, a family-owned Finnish industrial company with approximately 30 specialist companies operating in close cooperation. The group operates in Finland and the Baltic states, with approximately 1,500 employees and cumulative annual turnover of approximately €400 million. The group's main product groups include hydraulics, fasteners, seals, industrial rubbers and plastics, tapes and wire products, bearings and power transmission, tools and safety products. As part of Etola Group, Hydroll benefits from the backing of an internationally operating Finnish industrial partner.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• HYDAC: HYDAC is a leading global manufacturer of hydraulic accumulators (bladder, piston, and diaphragm), hydraulic filters, and fluid conditioning components. It is the closest direct competitor to Hydroll, with overlapping piston accumulator product lines and a global OEM customer base across mobile, industrial, marine, and energy applications.
• Casappa: Casappa is an Italian manufacturer of hydraulic pumps, motors, valves, and accumulators serving mobile and industrial markets. It is a direct peer in hydraulic accumulators with overlapping product offerings and similar European manufacturing footprint to Hydroll.
• NOK Corporation: NOK Corporation is a Japanese manufacturer specializing in sealing technology and hydraulic components, including hydraulic accumulators. It is a direct peer in piston accumulators with strong presence in Asian wind, mobile equipment, and industrial hydraulics end markets.
• Haskel International: Haskel International manufactures hydraulic and gas boosters, high-pressure equipment, and hydraulic accumulators used in oil & gas, aerospace, and industrial applications. It is a direct peer with overlapping high-pressure hydraulic accumulator technology serving demanding industrial customers.

Broad incumbents

• Bucher Hydraulics: Bucher Hydraulics is a Swiss manufacturer of hydraulic components including pumps, motors, valves, cylinders, and accumulators serving mobile and industrial markets. It is a broad incumbent with overlapping hydraulic accumulator offerings to similar OEM and end-user customers as Hydroll.
• Parker Hannifin: Parker Hannifin's Motion & Control Technologies segment manufactures a wide range of hydraulic components, including accumulators, valves, pumps, and filters. As a broad incumbent, Parker competes with Hydroll by offering hydraulic accumulators as part of full-system solutions to industrial, mobile, and aerospace customers.
• Bosch Rexroth: Bosch Rexroth is one of the world's largest hydraulics manufacturers, offering pumps, motors, valves, cylinders, and hydraulic accumulators (including piston types) as part of a broad motion and control portfolio. It is a broad incumbent competing against Hydroll primarily via system-level bundling into OEM accounts.
• IMI Precision Engineering: IMI Precision Engineering (formerly IMI Norgren) manufactures motion and fluid control components including hydraulic accumulators, valves, and cylinders for industrial and process applications. It is a broad incumbent with overlapping accumulator and fluid power product lines.
• Danfoss Power Solutions: Danfoss Power Solutions manufactures hydraulic components and systems for mobile equipment, including pumps, motors, valves, and accumulators. It is a broad incumbent competing with Hydroll in mobile hydraulics with the scale advantage of a global multi-product portfolio.
• Eaton: Eaton's Hydraulics group manufactures hydraulic pumps, valves, cylinders, and accumulators serving mobile and industrial markets globally. Eaton is a broad incumbent that competes with Hydroll across the same end customers with broader product bundles and global service infrastructure.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/hydroll-oy

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hydroll