
CNC-milled parts, turned parts up to Ø 350 mm, sawing, surface finishing and assembly from Switzerland.

Bieli Maschinenbau AG
SwitzerlandNew on Amplifa
About Bieli Maschinenbau
Bieli Maschinenbau AG is a third-generation Swiss family business specializing in the machining of metal parts. Its service portfolio includes CNC milling on 3- and 4-axis machining centers, CNC turning of single parts through to large-scale series with turning diameters up to 350 mm, and high-precision saw cutting up to 260 mm in diameter. In addition, the company offers surface and heat treatments, development and prototype construction, series production, and the assembly of complete assemblies. The modern machine fleet with machines from Muratec, CMZ, Tongtai and Bomar is continuously renewed and complemented by automation such as bar feeders and a robot cell with deburring and cleaning station for 24/7 operation. Customers receive flexible solutions with fast delivery times, from single-part production to large-scale series.
- Site
- Switzerland
- Processes
- CNC milling (3- and 4-axis), CNC turning, Sawing (cut-to-size), Surface finishing (surface and heat treatments), Development and prototype construction, Series production, Assembly manufacturing (assembly), CNC turning up to Ø 350 mm
- Materials
- CNC turning, CNC milling (3- and 4-axis), Sawing/cut-to-size, Surface and heat treatment, Assembly, Automation
- 01
Development and prototype construction
- 02
Sawing (cut-to-size)
- 03
CNC turning
- 04
CNC milling
- 05
Deburring and cleaning
- 06
Surface and heat treatment
- 07
Assembly of complete assemblies
Manufacturing Processes
CNC turning
Turned parts up to Ø 350 mm and turning length 640 mm, from single parts to large-scale series, partly from bar stock.
CNC milling (3- and 4-axis)
Milled parts up to 1020 × 510 × 600 mm with spindle speeds up to 15'000 U/min.
Sawing/cut-to-size
High-precision cut-to-size for single and series parts up to 260 mm in diameter.
Surface and heat treatment
A wide range of further processing and surface finishing of the manufactured parts.
Assembly
Assembly of manufactured individual parts into complete assemblies.
Automation
Bar feeders for Ø 6–52 mm and a robot cell with deburring and cleaning station for 24/7 operation.
Location
Switzerland
CHProduction site
- Lot size
- Single parts to large-scale series
- Materials
- Metal
- MURATEC MT-100-T3 CNC lathe
- CMZ TA-20 YS-640 CNC lathe
- Tongtai TD-250YBC CNC lathe
- Tongtai VP-10 3-axis machining center
- Tongtai VP-10 4-axis machining center
- 2× Top Automazioni Fusion 350 bar feeder
- Nachi robot cell with deburring and cleaning station
- Bomar S260 automatic saw
Components



Inside the production

Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC milling (3- and 4-axis)Machining | – | 1020 mm × 510 mm × 600 mm | – | Single parts – Large-scale series | – |
| CNC turningMachining | – | 640 mm × 350 mm (diameter) | – | Single parts – Large-scale series | – |
| Sawing (cut-to-size)Machining | – | 260 mm (sawing diameter) | – | Single parts – Series parts | Metal |
| Surface finishing (surface and heat treatments)Surface | – | – | – | – | – |
| Development and prototype constructionEngineering | – | – | – | – | – |
| Series productionMachining | – | – | – | – | – |
| Assembly manufacturing (assembly)Assembly | – | – | – | – | – |
8 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC lathe | MURATEC MT-100-T3 | 1 | Chuck size 165 mm, 2 spindles, 3 turrets (driven), spindle bore 51 mm, bars of 3 meters | – | – |
| CNC lathe | CMZ TA-20 YS-640 | 1 | Chuck size 250/150 mm, 2 spindles, 1 turret (driven), spindle bore 66 mm, | – | – |
| CNC lathe | Tongtai TD-250YBC | 1 | Chuck size 250/150 mm, 2 spindles, 1 turret (driven), spindle bore 50 mm, | – | – |
| 3-axis CNC machining center | Tongtai VP-10 | 1 | X 1020 mm, Y 510 mm, Z 600 mm, spindle speed up to 15'000 n/min | – | – |
| 4-axis CNC machining center | Tongtai VP-10 with 4th axis | 1 | X 1020 mm, Y 510 mm, Z 600 mm, C-axis up to ∅300 mm, 15'000 n/min | – | – |
| Bar feeder | Top Automazioni Fusion 350 | 2 | Bar diameter ∅6–52 mm, bar length up to 3 m, 3 loading bays | – | – |
| Robot cell | Nachi | 1 | Unloading of workpieces including deburring and cleaning station, 24/7 operation | – | – |
| Automatic saw | Bomar S260 | 1 | Max. sawing diameter 260 mm | – | – |
Additional services
History
Third-generation family business