Manufacturer of large-format custom hydraulic cylinders with FEM engineering, tube machining and deep-R surface hardening
ACONA-Hydraulik GmbH & Co. KG
Herzogenrath-Kohlscheid (DE)New on Amplifa
About ACONA-Hydraulik
ACONA-Hydraulik is a manufacturer specialising in large-format hydraulic cylinders, based in Herzogenrath-Kohlscheid near Aachen. Founded in 1955 and family-owned, the company designs and manufactures custom cylinders to drawing with piston diameters up to 800 mm, stroke lengths up to 6,000 mm and component weights up to 14 t. The entire value chain – engineering with FEM analysis, machining, welding, heat treatment, coating, assembly and testing – takes place at the Herzogenrath site. Processes include CNC turning, deep-hole drilling, honing, milling, cylindrical grinding and the self-developed deep-R surface hardening process, which hardens weld seams and increases service life and performance. Materials include heat-treatable steels, high-strength steels, stainless steels and duplex steels, cast steel and copper alloys. ACONA cylinders are used in presses, steel and rolling mills, mining technology, crane and lifting technology, aerospace, test rigs, offshore and wind energy applications. In addition to new production, the company also offers repair and overhaul of third-party products.
- Site
- Herzogenrath-Kohlscheid
- Processes
- Custom hydraulic cylinder manufacturing (piston diameter 200–800 mm, stroke up to 6,000 mm,, Turning (conventional and CNC-controlled), Deep-hole drilling, Drilling/milling, Wheel and band grinding, Honing, Welding, Coating inside and outside (incl. chrome plating, fusion-bonded coating,
- Materials
- Heat-treatable steel, Cast steel materials, Austenitic stainless steels, Duplex steels, High-strength steels, Corrosion-resistant stainless steels, Copper alloys (low-friction), Casting materials (for piston rod/cylinder combinations)
- Certificates
- ISO 9001:2015, ISO 9001
- Founded
- 1955
- Industries
- Mechanical engineering, Press manufacturing, Steel mill/rolling mill technology, Mining technology, Construction machinery, Crane and lifting technology
Materials & Processes
Heat-treatable steels
High tensile and fatigue strength; are coated or nitrided for corrosion protection.
High-strength steels
For high-performance cylinders under extreme loads.
Austenitic stainless steels
Seawater-resistant for offshore and marine applications.
Duplex steels (PREN > 34)
High corrosion protection for continuous contact with chlorides.
Cast steel materials
For geometrically complex cylinder bottoms and heads with high strength and weldability.
Copper alloys (low-friction)
For low-wear guide elements.
deep-R surface hardening (deep rolling)
Self-developed process for hardening weld seams; up to 100 % longer service life and up to 35 % material savings.
Hardening + tempering, nitriding
For microstructure optimisation of heat-treatable steels.
Site
Herzogenrath-Kohlscheid
DEMain site: design, manufacturing, testing, maintenance
- Part weight / size
- Cylinders up to 14 t, stroke up to 6,000 mm
- Lot size
- Custom one-off production
- Materials
- Heat-treatable, high-strength, stainless and duplex steels, cast steel, copper alloys
- Bed milling machine Lagun BM 4 (travel 4,000 x 1,300 x 1,500 mm)
- Deep-hole drilling machine (special machine)
- CNC turning and milling machines
- Pressure test rigs
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Custom hydraulic cylinder manufacturing (piston diameter 200–800 mm, stroke up to 6,000 mm,Hydraulic cylinder manufacturing | – | 6,000 mm stroke × 800 mm piston diameter | 14 t | – | Steel, high-strength steels, corrosion-resistant stainless steels, low-friction copper alloys, duplex steels, cast steel materials, heat-treatable steels |
| Turning (conventional and CNC-controlled)Machining | – | 5,900 mm × ⌀ 1,200 mm (short turned parts) / ⌀ 800 | – | – | Steel, stainless steel |
| Deep-hole drillingMachining | – | 5,000 mm × Inner ⌀ 460 mm (up to inner ⌀ 800 mm | – | – | Steel |
| Drilling/millingMachining | – | 8,000 mm × 4,000 x 1,300 x 1,500 mm (travel × 1,500 mm | – | – | Steel |
| Wheel and band grindingMachining | – | 3,600 mm × ⌀ 550 mm | – | – | Steel |
| HoningMachining | – | – | – | – | Steel |
| WeldingJoining | – | – | – | – | Steel |
| Coating inside and outside (incl. chrome plating, fusion-bonded coating,Surface | – | – | – | – | Steel, stainless steel |
| Heat treatment (hardening + tempering, nitriding)Heat treatment | – | – | – | – | heat-treatable steels, Steel |
| Painting (also seawater-resistant)Surface | – | – | – | – | Steel |
| deep-R (surface hardening / deep rolling of weld seams)Surface | – | – | – | – | Steel |
| Engineering and FEM analysis (design, calculation, dimensioning according to DIN EN, FKM, DNV)Engineering | – | – | – | – | – |
| Hydraulic cylinder repair & overhaul (including third-party products)Assembly / Service | – | – | – | – | Steel |
| Testing: functional, pressure and leak testing (100 % final acceptance, ISO 10100)Testing | – | – | – | – | – |
| Further test methods: dimensional measurement, coating thickness measurement, roughnessTesting | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Bed milling machine | Lagun BM 4 | 1 | 4,000 x 1,300 x 1,500 mm (travel) | – | Herzogenrath |
| Deep-hole drilling machine (special machine) | – | 1 | – | – | Herzogenrath |
| CNC machines (turning/milling for cylinder manufacturing) | – | – | – | – | Herzogenrath |
| Pressure test rigs | – | several | – | – | Herzogenrath |
Additional services
Quality & Certification
Every cylinder undergoes 100 % functional, pressure and leak testing with acceptance according to ISO 10100 and an inspection certificate 3.1 according to EN 10204. In addition, test methods such as dimensional, roughness, hardness and coating thickness measurement, dye penetrant, ultrasonic and magnetic particle testing are available; the company is certified according to ISO 9001:2015.
| Evidence | Herzogenrath-Kohlscheid |
|---|---|
| ISO 9001 |
Company History
- 1955
Foundation of ACONA-Hydraulik; still owned by the founding family today
- 2018/2019
Development of the deep-R surface hardening process in cooperation with Industrieforschung Wirsing and the Machine Tool Laboratory (WZL) of RWTH Aachen
- 2021
Nomination of the deep-R process for the Best of Industry Award (MM MaschinenMarkt)