CNC machining of components up to 5 tonnes and manufacturer-independent gearbox service for industry

Hellwig & Offermann GmbH
Ennepetal, GermanyNew on Amplifa
About HEOF
Hellwig & Offermann GmbH (HEOF) was founded in 1983 as a machine and gearbox manufacturing company and is based at its headquarters in Ennepetal. The company combines two areas of expertise under one roof: its own CNC machining as well as a manufacturer-independent gearbox service including repair. In the machining field, individual parts as well as small and medium series are produced – boring mill, milling and turning operations, including on large and complex components weighing up to 5 tonnes. In the gearbox service, industrial gearboxes are inspected, repaired and documented, including technical assessment and remanufacturing of no-longer-available spare parts according to drawings or samples. Customers come, among others, from mechanical and plant engineering, the paper and sugar industries, the chemical industry, the steel and rolling mill sector, as well as crane and conveying technology and power generation. A quality management system according to ISO 9001 is verifiable.
- Site
- Ennepetal
- Processes
- CNC machining (boring mill, milling and turning operations), Gearbox Service & Repair (inspect, repair and document industrial gearboxes,, CNC machining (boring mill, milling and turning operations, individual parts and series, workpieces, Manufacturer-independent gearbox service and repair, Technical assessment and remanufacturing of spare parts, Digital gearbox file and documentation
- Materials
- CNC Machining, Gearbox Service, Remanufacturing
- Certificates
- ISO 9001
- Founded
- 1983
- Industries
- Mechanical and plant engineering, Paper, board and cardboard industry, Process industry, Steel and rolling mills, Chemical industry, Food and sugar industry
- 01
Technical assessment of component, function and operating conditions
- 02
In-house production or remanufacturing according to drawing or sample
- 03
Repair and documentation (e.g. digital gearbox file)
Materials and Processes
CNC Machining
Boring mill, milling and turning operations for individual parts and small to medium series on workpieces up to 5 t.
Gearbox Service
Manufacturer-independent inspection, repair and documentation of industrial gearboxes.
Remanufacturing
Technical assessment and remanufacturing of spare parts according to drawing or sample.
Locations
Ennepetal
DEManufacturing and technical contacts (headquarters)
- Part weight / size
- Workpieces up to 5 t
- Lot size
- Individual parts up to small and medium series
- CNC machining (boring mill, milling, turning)
Components and Services

Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC machining (boring mill, milling and turning operations)Machining | – | – | 5 tonnes (workpieces up to 5 tonnes) | Individual parts – small and medium series | – |
| Gearbox Service & Repair (inspect, repair and document industrial gearboxes,Assembly | – | – | 5 tonnes (large components and | – | – |
Additional services
Quality
The company operates a quality management system according to ISO 9001. Functions such as fits, bearing seats, bore alignments and functional surfaces are kept in view during machining and repair.
| Evidence | Ennepetal |
|---|---|
| ISO 9001 |
History
- 1983
Foundation of Hellwig & Offermann GmbH as a machine and gearbox manufacturing company.