
Sourcing and manufacturing of CNC sheet-metal assemblies, welded constructions, die-cast, injection-moulded and machined parts in Eastern and Central Europe.

GROSCH GmbH
Lohfelden (headquarters) · Production with contract partners in the Czech Republic, Poland, Hungary, Croatia, Slovakia, Slovenia, Romania, TurkeyNew on Amplifa
About GROSCH GmbH
GROSCH GmbH, based in Lohfelden near Kassel, has been active in global sourcing as a system supplier and development supplier since 1989. The company develops and produces ready-to-install CNC sheet-metal assemblies up to 3 mm material thickness, welded constructions, control cabinets, distribution cabinets, machine enclosures and tube-bending parts at contract partner companies in Eastern and Central Europe (including the Czech Republic, Poland, Hungary, Croatia, Slovakia, Slovenia, Romania and Turkey). Further focal points are precision die casting in aluminium and zinc including in-house toolmaking, plastic injection-moulded parts and assemblies, GRP fibre-composite solutions as well as precision turned parts up to 550 mm in diameter and 1,000 mm in length in all materials. Machining is carried out, among other things, on 15 milling and machining centres in Slovakia. In addition, GROSCH GmbH offers 2D/3D design (Solidworks), FMEA analyses, electroplated surface coating, assembly manufacturing, contract assembly, fulfilment as well as sourcing and outsourcing consulting. Customers come, among others, from mechanical engineering, electrical engineering and control cabinet construction as well as metal and plastics processing.
- Site
- Lohfelden
- Processes
- Manufacturing CNC sheet-metal assemblies and welded parts, CNC laser processing, Turning (CNC), Milling (CNC), Drilling, Sawing, Grinding, Thread cutting
- Materials
- Sheet metal (up to 3 mm material thickness), GRP (glass-fibre reinforced plastic), Aluminium, Zinc, Plastic, all materials (turned parts), Sheet metal (up to 3 mm), Steel, stainless steel, aluminium (welded parts)
- Founded
- 1989
- Industries
- Mechanical engineering, Electrical engineering / control cabinet construction, Metal processing, Die casting, Plastics processing
- 01
2D/3D design (Solidworks) and FMEA
- 02
Tool design / mould making
- 03
CNC manufacturing (laser, milling, turning, sheet-metal working)
- 04
Welding and joining
- 05
Electroplated surface coating
- 06
Assembly manufacturing / contract assembly / fulfilment
Materials and Processes
Sheet metal (up to 3 mm)
Base material for CNC sheet-metal assemblies, enclosures, control cabinets and laser processing.
Aluminium
Material for precision die-cast moulded parts.
Zinc
Material for precision die-cast moulded parts.
GRP (glass-fibre reinforced plastic)
Fibre-composite material for GRP system solutions.
Plastic
Material for injection-moulded parts and assemblies.
Steel, stainless steel, aluminium (welded parts)
Materials for manual welding of assemblies with customer-specific fixtures.
All materials (machining)
For CNC turned parts up to 550 mm in diameter and 1,000 mm in length.
Sites

Lohfelden
DEHeadquarters, sales, design and project management

Slovakia
DEProduction CNC machining at contract partners
- 15 milling and machining centres
- CNC machining centres
Components





Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacturing CNC sheet-metal assemblies and welded partsJoining | – | – | – | – | Sheet metal |
| CNC laser processingMachining | – | – | – | – | Sheet metal |
| Turning (CNC)Machining | – | 1000 mm × 550 mm | – | – | all materials |
| Milling (CNC)Machining | – | – | – | – | all materials |
| DrillingMachining | – | – | – | – | – |
| SawingMachining | – | – | – | – | – |
| GrindingMachining | – | – | – | – | – |
| Thread cuttingMachining | – | – | – | – | – |
| RivetingJoining | – | – | – | – | – |
| Precision die castingCasting | – | – | – | – | Aluminium, Zinc |
| Plastic injection mouldingPlastics | – | – | – | – | Plastic, GRP |
| GRP fibre-composite technologyPlastics | – | – | – | – | GRP |
| Manual welding of assembliesJoining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Electroplated surface coatingSurface | – | – | – | – | – |
| Assembly manufacturing / contract assembly / fulfilmentAssembly | – | – | – | – | – |
| Tool design / mould makingEngineering | – | – | – | – | – |
| 2D/3D design (Solidworks) / FMEAEngineering | – | – | – | – | – |
| Building technical containersAssembly | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC machining centres | – | – | – | – | Slovakia |
| Milling and machining centres | – | 15 | – | – | Slovakia |
| Die-casting machines | – | – | – | – | – |
| Tools and moulds (manufacture) | – | – | – | – | – |
Additional services
History
- 1989
Start of development and production at contract partner companies in Eastern and Central Europe
- 2023
Last change in the commercial register on 05.02.2023