Swiss gear factory in Nebikon – development, manufacturing and testing of gearing components for drive technology since 1947.
GROB AG Zahnradfabrik
Nebikon (CH)New on Amplifa
GROB AG – Specialist for Gearing Components
GROB AG is a Swiss gear factory based in Nebikon that has been manufacturing gearing components and components for drive technology since 1947. The company, with around 60 employees, machines workpieces across the process spectrum of gear cutting, grinding, power skiving, turning, milling as well as broaching/shaping/pulling – as complete or partial operations, from single parts to series production and special profiles. In addition to manufacturing, the offering includes consulting, gear calculation, production planning, quality control with measurement and inspection certificates, as well as packaging and delivery, optionally also via volume contracts. Customers come primarily from drive technology, gearbox construction and mechanical engineering and are supplied worldwide. On a production area of 4000 m², GROB AG operates a modern machine park, including a G350T 5-axis milling-turning machining center and a DMG MORI CTX 450 V6 turning machine, and is certified according to ISO 9001 and ISO 14001.
- Site
- Nebikon
- Processes
- Gear Cutting, Grinding, Power Skiving, Turning, Milling, Broaching / Shaping / Pulling, Measuring & Testing, Gear Calculation (Design/Geometry Calculation)
- Materials
- Gear Cutting, Grinding, Power Skiving, Turning, Milling, Broaching / Shaping / Pulling, Measuring & Testing, Gear Calculation
- Certificates
- ISO 9001:2015, ISO 14001:2015
- Founded
- 1947
- Employees
- 60
- Industries
- Drive Technology, Gearbox Construction, Mechanical Engineering
- 01
Consulting
- 02
Gear calculation
- 03
Production planning / work preparation
- 04
Manufacturing (gear cutting, grinding, power skiving, turning, milling,
- 05
Measuring & Testing
- 06
Packaging
- 07
Delivery/Logistics
Manufacturing Processes
Gear Cutting
Core competence in the manufacturing of gears and gearing components according to customer requirements.
Grinding
Finishing of gearings for even higher quality levels.
Power Skiving
Process for the efficient production of internal gearings and straight bevel gearings.
Turning
Versatile turning operations, partly with gantry loader/robot automation.
Milling
5-axis milling-turning machining of medium-sized workpieces in a single setup (G350T).
Broaching / Shaping / Pulling
Machining processes for profiles and fitting surfaces on gearing components.
Measuring & Testing
Inspection of own and third-party parts on gear measuring machines as well as 2D/3D coordinate measuring machines.
Gear Calculation
Design and geometry calculation of spur gears, internal gearings and gear pairings including strength verification.
Location
Nebikon
CHProduction and Administration (Gear Factory)
- Lot size
- Single parts · Series · Volume contracts
- GROB G350T universal milling-turning machining center (5-axis, clearance diameter Ø 620 mm, positioning accuracy 0.006 mm)
- DMG MORI CTX 450 V6 turning machine
- Gear cutting machines with loading robots
- Höfler Klingelnberg gear measuring machine
- Double-flank rolling gear tester gms 32 (Ø 150 mm, module 0.1–3 mm)
- 2D and 3D coordinate measuring machines
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Gear CuttingCutting/Machining | – | – | – | – | – |
| GrindingCutting/Machining | – | – | – | – | – |
| Power SkivingCutting/Machining | – | – | – | – | – |
| TurningCutting/Machining | – | – | – | – | – |
| MillingCutting/Machining | – | – | – | – | – |
| Broaching / Shaping / PullingCutting/Machining | – | – | – | – | – |
| Measuring & TestingInspection | – | – | – | – | – |
| Gear Calculation (Design/Geometry Calculation)Engineering | – | – | – | – | – |
| Consulting (Design, Calculation, Engineering of Gears and Gear Applications)Engineering | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Universal milling-turning machining center (5-axis) | GROB-WERKE GmbH & Co. KG G350T | – | Clearance diameter 620 mm; table diameter 570 mm; table load 270/350 kg (with/without pallet); | – | Nebikon |
| Turning Machine | DMG MORI CTX 450 V6 | – | – | – | Nebikon |
| Gear Measuring Machine | Höfler Klingelnberg | – | – | – | Nebikon |
| 2D and 3D Coordinate Measuring Machines | – | – | – | – | Nebikon |
| Double-Flank Rolling Gear Tester | gms 32 | – | Gears up to Ø 150 mm, module 0.1 - 3 mm | – | Nebikon |
Additional services
Quality
Manufacturing is accompanied by continuous quality assurance in all machining phases; gear measuring machines (Höfler Klingelnberg), 2D/3D coordinate measuring machines and a double-flank rolling gear tester (gears up to Ø 150 mm, module 0.1–3 mm) ensure precision. Measurement and inspection certificates are issued upon request.
| Evidence | Nebikon |
|---|---|
| ISO 9001:2015 | |
| ISO 14001:2015 |
History
- 1947
Founding of the 'Zahnrad- und Maschinenfabrik Grob' by Hans Grob-Tschopp in the basement of a residential house.
- 1979/1980
Entry of Philipp Grob and Fritz Grob jun.
- 1989
Move into the new production hall with office building; production area 2000 m², 29 employees.
- 1995
First certification according to ISO 9000; commissioning of the first gantry loader/robot on the turning machine.
- 2003
Commissioning of the first gear cutting machine with loading robot.
- 2014
Opening of the production extension building (total area 4000 m²).
- 2016
Introduction of '5S' throughout the company.
- 2017
New apprenticeship area in the workshop.
- 2018
On the way to Industry 4.0.
- 2019
Rafael Fellmann takes over the management.
- 2023
GROB AG is now under the umbrella of the F.G. Pfister Foundation.
- 2025
Expansion of the machine park with the GROB G350T 5-axis milling-turning machining center.
- 2026
New investment in the DMG MORI CTX 450 V6 turning machine.