
Diagnosis and overhaul of wind turbine gearboxes and rotor main shafts with complete service from a single source.
gear-tec GmbH
Eggebek (DE)New on Amplifa
About gear-tec
gear-tec GmbH, based in Eggebek, specializes in the diagnosis and overhaul of wind turbine gearboxes and rotor main shafts. Founded in 2006, the company has been part of Deutsche Windtechnik Service GmbH & Co. KG since 2018 and offers complete service: from inspection via video endoscopy through repair and alignment of gearbox and generator to de- and remounting at the wind turbine as well as crane service and transport. In the workshop hall at the Eggebek site, components weighing up to 50 tonnes can be handled, which is sufficient for all common gearbox makes up to 2.5 MW. On average, 25 gearbox and 50 main shaft overhauls are carried out per year. Experience exists with all common turbine types up to 3 MW, including Vestas, Senvion, Nordex, Siemens, Tacke/GE and Enercon. References exist for common gearbox types such as Winergy, Bosch Rexroth, Hansen, Eickhoff, JaKe, Renk and Moventas.
- Site
- Eggebek
- Processes
- Video endoscopy / inspection of wind turbine gearboxes, Overhaul of wind turbine gearboxes (gearbox repair), Overhaul of rotor main shafts, Alignment of gearbox and generator (drivetrain alignment), De- and remounting of the gearbox on the wind turbine, Vibration analysis after overhaul (online via CMS), Crane service and transport of gearbox/main shaft components, Preparation of inspection plans in accordance with standards incl. documentation of inspection
- Materials
- Maintenance and Overhaul, Video Endoscopy, Drivetrain Alignment, Vibration Analysis
- Certificates
- Documentation of inspection results
- Founded
- 2006
- Employees
- 19
- Industries
- Wind energy
- 01
Inspection (video endoscopy, inspection plans)
- 02
Crane service and transport
- 03
Dismounting at the wind turbine
- 04
Overhaul in the Eggebek workshop hall
- 05
Remounting and alignment of gearbox and generator
- 06
Commissioning and vibration analysis (CMS)
Processes and Services
Maintenance and Overhaul
Diagnosis and overhaul of wind turbine gearboxes and rotor main shafts at new-part level.
Video Endoscopy
Precise condition analysis of the gearbox without disassembly, including inspection documentation.
Drivetrain Alignment
Alignment of gearbox and generator with state-of-the-art measuring equipment.
Vibration Analysis
Proof of proper overhaul and baseline data for gearbox monitoring, online via CMS where possible.
Site

Eggebek
DEHeadquarters and workshop hall for components up to 50 t
- Part weight / size
- up to 50 t (gearboxes up to 2.5 MW)
- Lot size
- One-off production (approx. 25 gearbox and 50 main shaft overhauls/year)
- Materials
- Wind turbine gearboxes and rotor main shafts
- Workshop hall with crane system/lifting gear
- Video endoscope
- Measuring equipment for gearbox/generator alignment
Components



Inside the production







Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Video endoscopy / inspection of wind turbine gearboxesTesting | – | – | – | – | – |
| Overhaul of wind turbine gearboxes (gearbox repair)Assembly | – | – | up to 50 tonnes (in the workshop hall | approx. 25 gearbox overhauls per | – |
| Overhaul of rotor main shaftsAssembly | – | – | – | approx. 50 main shaft overhauls per | – |
| Alignment of gearbox and generator (drivetrain alignment)Assembly | – | – | – | – | – |
| De- and remounting of the gearbox on the wind turbineAssembly | – | – | – | – | – |
| Vibration analysis after overhaul (online via CMS)Testing | – | – | – | – | – |
| Crane service and transport of gearbox/main shaft componentsAssembly | – | – | – | – | – |
| Preparation of inspection plans in accordance with standards incl. documentation of inspectionTesting | – | – | – | – | – |
| Provision of exchange components / replacement gearboxes and spare partsAssembly | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Workshop hall with lifting gear/crane system for heavy components | – | – | – | – | Eggebek |
| Video endoscope | – | – | Internal visual inspection of gearboxes | – | Eggebek |
| State-of-the-art measuring equipment for gearbox/generator alignment | – | – | – | – | – |
Additional services
Reference customers
Quality
Inspection plans are prepared in accordance with standards and all inspection results are documented without gaps. After the overhaul, a vibration analysis, online via CMS where possible, confirms proper execution.
| Evidence | Eggebek |
|---|---|
| Documentation of inspection results |
History
- 2006
Founded in Eggebek
- 2018
Subsidiary of Deutsche Windtechnik Service GmbH & Co. KG