Design and CNC manufacturing of hydraulic control blocks, connection plates and power units as well as service for hydraulic systems
bolz Hydraulik GmbH
Rellingen · WismarNew on Amplifa
Company
bolz Hydraulik GmbH in Rellingen (Schleswig-Holstein) specialises in system and power unit construction, trading and production in the field of hydraulics. The company designs highly specific systems, power units and control blocks using 3D CAD and manufactures control blocks, connection plates and housings on CNC milling machines in small and large series. Materials include steel (11SMn30+C), cast iron (GG25) and aluminium; surface finishing is carried out in the in-house painting hall, and blackening and galvanising are also offered. The depth of production includes an own steel construction/welding department, control system construction including PLC electrical controls, and complete assembly of hydraulic systems in the factory and on site. Service staff maintain and commission systems throughout Germany, equipped with a mobile pipe bending machine and a particle measuring device. Customers can be found in the food industry, sea and river shipping, offshore installations, aerospace technology, load transport, as well as press and casting technology. In addition, bolz Hydraulik distributes components from SUN Hydraulik, Hydac and Parker.
- Site
- Rellingen
- Processes
- CNC milling of control blocks, connection plates and housings (small and large series), Design of control blocks (compact blocks, custom blocks) with 3D CAD, System and power unit construction incl. linking systems, Assembly of hydraulic systems (complete/partial, on site or in the factory), pipework installation, Welding (own steel construction department), Control system construction incl. electrical controls with PLC and electronics, Painting (painting hall, weather- and seawater-resistant), Blackening
- Materials
- 11SMn30+C (steel, galvanising possible), GG25 (cast iron), Aluminium (connection plates max. 210 bar), Steel (pipe screw connections according to DIN 2353, max. 420 bar; hydraulic cylinders), Steel 11SMn30+C, Cast iron GG25, Aluminium, Steel
- Certificates
- Classification acceptances (ABS, BV, CCS, DNV GL)
- Industries
- Food industry, Sea and river shipping, Offshore installations, Aerospace technology, Load transport, Press and casting technology
- 01
Engineering/Design (3D-CAD)
- 02
CNC milling
- 03
Welding (steel construction)
- 04
Surface technology (painting, blackening, galvanising)
- 05
Control system construction (PLC)
- 06
Assembly
- 07
Maintenance/Commissioning
Materials and Processes
Steel 11SMn30+C
Automotive free-cutting steel for steel connection plates up to 420 bar, optionally galvanised.
Cast iron GG25
Material for connection plates up to 315 bar in standard and multi-series.
Aluminium
Connection plates up to max. 210 bar.
Steel
Hydraulic cylinders, pipe screw connections according to DIN 2353 (max. 420 bar) and steel construction.
Locations
Rellingen
DEHeadquarters, production, sales
- Lot size
- Small and large series
- Materials
- Steel, cast iron, aluminium
- CNC milling machine
- Painting hall
Wismar
DELocation
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC milling of control blocks, connection plates and housings (small and large series)Machining | – | – | – | Small series – Large series | Steel (11SMn30+C), Cast iron (GG25) |
| Design of control blocks (compact blocks, custom blocks) with 3D CADEngineering | – | – | – | – | – |
| System and power unit construction incl. linking systemsAssembly | – | – | – | One-offs – Series production | – |
| Assembly of hydraulic systems (complete/partial, on site or in the factory), pipework installationAssembly | – | – | – | – | – |
| Welding (own steel construction department)Joining | – | – | – | – | Steel |
| Control system construction incl. electrical controls with PLC and electronicsAssembly | – | – | – | – | – |
| Painting (painting hall, weather- and seawater-resistant)Surface | – | – | – | – | – |
| BlackeningSurface | – | – | – | – | – |
| Galvanising (surface protection, also for steel connection plates)Surface | – | – | – | – | Steel |
| Maintenance of hydraulic systems (oil and filter changes, oil contamination determination,Assembly | – | – | – | – | – |
| Cylinder repairAssembly | – | – | – | – | – |
| In-house production of spare partsMachining | – | – | – | – | – |
| Acceptance in classifications (ABS, BV, CCS, DNV GL and more)Testing | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC milling machine | – | – | – | – | Rellingen / Wismar |
| Mobile pipe bending machine | – | – | – | – | Service vehicle (nationwide) |
| Particle measuring device | – | – | – | – | Service vehicle |
| Painting hall | – | 1 | – | – | Rellingen |
Additional services
Reference customers
Quality
Every product passes through a multi-stage control and safety system; an identification number makes production traceable back to the day of manufacture. Acceptances in classifications such as ABS, BV, CCS and DNV GL are possible.
| Evidence | Rellingen |
|---|---|
| Classification acceptances (ABS, BV, CCS, DNV GL) |
History
Two decades of experience in the design and manufacture of hydraulic power units; 35 years of engineering know-how (self-reported, no founding year given)