CNC turned and milled parts as well as wire EDM work in stainless steel, steel, non-ferrous metals and plastics for fittings, mechanical engineering and drive technology.
Willi Heller GmbH
Velbert (Langenberger Straße 235a, Röbbeck industrial estate)New on Amplifa
About Willi Heller GmbH
Willi Heller GmbH, based in Velbert, is a third-generation family business with 12 employees that manufactures turned and milled parts to customer requirements. The machine park comprises CNC multi-slide automatic lathes, cam-controlled automatic lathes, multi-axis CNC lathes with driven tools and bar loading, turn-mill centers, and machining centers with CNC-controlled fourth axis. In addition, there is a wire EDM machine with Fanuc control for form steels, forming tools, dies and punches. Materials processed include stainless steel (unalloyed, alloyed, duplex), structural steels, free-cutting steels, tool steels, non-ferrous metals and plastics. Further services include thread production, keyway broaching and slotting, marking by laser and dot peening, as well as surface treatment and hardening with partners. Customers come from the fittings industry, mechanical engineering, and metrology and drive technology.
- Site
- Velbert
- Processes
- Turning (CNC multi-slide automatic lathes), Turning (CNC automatic lathes for chuck machining), Turning (cam-controlled automatic lathes), Milling / drilling (machining centers with CNC-controlled 4th axis), Wire EDM, Thread production (turning, milling, cutting, forming), Keyway broaching / slotting, Surface treatment (with partners)
- Materials
- Stainless steel, unalloyed stainless steels, alloyed stainless steels, Duplex steel, Structural steels, Free-cutting steels, Tool steels, Non-ferrous metals
- Certificates
- DIN EN ISO 9001:2015, Re-stamping certificate (transfer of material designation, AD 2000 HP0 /, Re-stamping certificate AD 2000 HP0 / Directive 2014/68/EU (TÜV Rheinland)
- Founded
- 1997
- Employees
- 12
- Industries
- Fittings industry, Mechanical engineering, Metrology and drive technology
- 01
CAD design (EZCAM)
- 02
CNC turning
- 03
Milling/drilling
- 04
Wire EDM
- 05
Thread production
- 06
Keyway broaching / slotting
- 07
Marking (laser, dot peening)
- 08
Heat treatment / surface treatment (partner)
- 09
Quality assurance
- 10
Re-stamping of material designations
Materials and processes
Stainless steel / unalloyed & alloyed stainless steels
Main material for turned and milled parts, among others for the fittings industry.
Duplex steel
For corrosion-resistant precision parts in demanding applications.
Structural steels
Universally applicable for turned parts and housing components.
Free-cutting steels
Good machinability for mass-produced turned parts on multi-slide and cam-controlled automatic lathes.
Tool steels
Used among others for form steels and EDM-machined forming tools, dies and punches.
Form turning steels HSSE, HM, PKD
Production of form turning steels from high-speed steel, carbide and polycrystalline diamond.
Non-ferrous metals
Non-ferrous metals for turned parts with special threads and valve components.
Plastics
Machining of plastics into turned and milled parts according to drawing.
Wire EDM (Fanuc)
Form steels for automatic lathes, forming tools and special parts up to 170 mm height.
Heat treatment / induction hardening (partner)
Hardening of structural steels and tool steels with long-standing partners.
Marking (laser, dot peening)
Permanent lettering and marking of turned and milled parts made of various materials.
Locations
Velbert
DEHeadquarters, CNC turning and EDM production, quality assurance
- Part weight / size
- Ø 20–65 mm (bar stock), Ø 200 × 600 mm (chuck machining)
- Lot size
- Series production and individual parts
- Materials
- Stainless steel, structural steels, free-cutting steels, tool steels, duplex steel, non-ferrous metals, plastics
- Hwacheon Vesta 1000 machining center (4th axis)
- Mazak VCE-500 machining center (4th axis)
- Mazak CNC lathes with driven tools and feeding system
- Miyano 8-axis turning machine with bar loading up to Ø 50 mm
- Hwacheon T2,2T turn-mill center with sub-spindle and Y-axis
- Hwacheon Cutex 160A/160B with bar loading system
- Okuma Genos L200M with gantry loading system
- Index cam-controlled automatic lathes
- Fanuc wire EDM machine
- Laser system and computer-controlled dot peen marker
- Mahr contour measuring machine
- Keyence image-based measuring system
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Turning (CNC multi-slide automatic lathes)Machining | – | – | Ø 20 – 65 mm | Series production | Stainless steel, unalloyed / alloyed stainless steels, duplex steel, structural steels, free-cutting steels, tool steels, non-ferrous metals, plastics |
| Turning (CNC automatic lathes for chuck machining)Machining | – | 600 mm | max. diameter 200 mm | – | Stainless steel, unalloyed / alloyed stainless steels, duplex steel, structural steels, free-cutting steels, tool steels, non-ferrous metals, plastics |
| Turning (cam-controlled automatic lathes)Machining | – | – | Ø 15 – 60 mm | Series production | free-cutting steels, stainless steel, structural steels, non-ferrous metals |
| Milling / drilling (machining centers with CNC-controlled 4th axis)Machining | – | – | – | – | Stainless steel, unalloyed / alloyed stainless steels, duplex steel, structural steels, tool steels, non-ferrous metals, plastics |
| Wire EDMMachining | – | maximum height up to 170 mm | – | – | tool steels, form steels, HSSE, HM, PKD |
| Thread production (turning, milling, cutting, forming)Machining | – | – | – | – | Stainless steel, structural steels, free-cutting steels, non-ferrous metals |
| Keyway broaching / slottingMachining | – | – | – | – | Stainless steel, structural steels, non-ferrous metals |
| Surface treatment (with partners)Surface | – | – | – | – | – |
| Induction hardening / hardening (with partners)Heat treatment | – | – | – | – | structural steels, tool steels |
| Marking / lettering of turned and milled parts (laser system and dot peen marker)Surface | – | – | – | – | various materials |
| Production of turned and milled partsMachining | – | – | – | – | stainless steels, steels, plastics, non-ferrous metals |
| Quality inspection (Mahr contour measuring machine, surface roughness tester, Keyence image-basedInspection | – | – | – | – | – |
| Re-stamping / transfer of material designation (metallic materials, DIN EN 10204Inspection | – | – | – | – | metallic materials |
15 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Machining center with CNC-controlled fourth axis | Hwacheon Vesta 1000 | – | Three-side machining in one setup | 2018 | Velbert |
| Machining center with CNC-controlled fourth axis | Mazak VCE-500 | – | Three-side machining in one setup | 2025 | Velbert |
| Cam-controlled conventional automatic lathes | Index | – | Series production | – | Velbert |
| CNC lathes with driven tools, tailstock or second spindle, automatic | Mazak | several | – | 2007, 2010 | Velbert |
| Multi-axis turning machine with bar loading up to ∅50 mm, two spindles each with C-axis, two | Miyano | – | Bar loading up to ∅50 mm | 2001 (8-Ac | Velbert |
| Wire EDM machine with Fanuc control | Fanuc | – | maximum height up to 175 mm (machine park) / up to 170 mm (services) | 1997 | Velbert |
| Turning machine with feeding system, tailstock and driven tools (gantry loading system) | Okuma Genos L200M | – | – | 2018 | Velbert |
| Turning machine with bar loading system, tailstock and driven tools | Hwacheon Cutex 160A | – | – | 2016 | Velbert |
| Turning machine with bar loading system, tailstock and driven tools | Hwacheon Cutex 160B | – | – | 2022 | Velbert |
| Turn-mill center with bar loading system, second turret, sub-spindle, Y-axis, C-axes, | Hwacheon T2,2T | – | – | 2018 | Velbert |
| Laser marking system | – | – | – | 2004 | Velbert |
| Computer-controlled dot peen marker | – | – | – | – | Velbert |
| Contour measuring machine | Mahr | – | – | 2019 | Velbert |
| Surface roughness tester | – | – | – | 2019 (erne | Velbert |
| Image-based measuring system | Keyence | – | – | 2015 | Velbert |
Additional services
Quality
Computer-aided production and quality assurance with regular monitoring of measuring equipment (QDE system) ensure consistent quality. For measurement, a Mahr contour measuring machine, a surface roughness tester and an image-based Keyence measuring system are available; moreover, the company has been authorized since 1993 to re-stamp material designations according to AD 2000 HP0 / Directive 2014/68/EU.
| Evidence | Velbert |
|---|---|
| DIN EN ISO 9001:2015 | |
| Re-stamping certificate AD 2000 HP0 / Directive 2014/68/EU (TÜV Rheinland) |