

Overview
About Willi Hahn GmbH
Who we are
Production and sales of cold forming parts, turning and milling parts. All size ranges and part geometries. CNC single and multi-spindle
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Wuppertal, Germany
Member since 2003
Employees200 - 500
Certificates2
Turnover20 - 50 Mil.
Year of foundation1939
Competencies
Technologies
Turning
| Technologies | Lotsize | Length | Width | Height | Diameter | Weight | Material thickness |
|---|---|---|---|---|---|---|---|
Turning | 1–5 M | 1–600 mm | — | — | 1–325 mm | — | — |
Automatic turning (bar) | 1–1 M | 1–450 mm | — | — | 1–90 mm | — | — |
Swiss turning | 500–1 M | 1–450 mm | — | — | 1–36 mm | — | — |
Full-range turning (including milling) | 100–500 k | 1–600 mm | — | — | 5–500 mm | — | — |
Hard turning | 50–500 k | 1–600 mm | from 0 mm | from 0 mm | 5–325 mm | 0–20 kg | from 0 mm |
Broaching | 50–100 k | 2–150 mm | — | — | 10–200 mm | — | — |
Deep-hole drilling | 500–1 M | 20–150 mm | 1–20 mm | 1–100 mm | 1–100 mm | 0–10 kg | — |
Finishing
| Technologies | Lotsize | Length | Width | Height | Diameter | Weight | Material thickness |
|---|---|---|---|---|---|---|---|
External cylindrical grinding | 20–150 k | 5–600 mm | from 0 mm | from 0 mm | 12–250 mm | 0–25 kg | from 0 mm |
Centreless grinding | 30–950 k | 3–600 mm | from 0 mm | from 0 mm | 1–120 mm | 0–10 kg | from 0 mm |
Surface grinding machine | 20–100 k | 1–500 mm | 4–400 mm | 1–250 mm | from 0 mm | 0–20 kg | from 0 mm |
Rotofinishing, barrel finishing | 1,000–100,000 | 10–500 mm | 10–500 mm | 10–500 mm | — | — | — |
Milling
| Technologies | Lotsize | Length | Width | Height | Diameter |
|---|---|---|---|---|---|
Milling | 100–500 k | 1–3,000 mm | 1–1,000 mm | 100–500 mm | — |
Full-range milling (including turning) | 300–100,000 | 10–200 mm | 10–500 mm | 10–500 mm | 10–500 mm |
Materials
Light metals
Aluminium and aluminium alloysMagnesium and magnesium alloysTitanium and titanium alloys
Heavy metals
Copper-zinc alloys (brass)Copper and copper alloysZinc and zinc alloys
Sintered materials
Metal powder for formed partsMetal powder for hard metal
Steel
Structural steelCase hardening/tempering steelStainless steel (rust-proof V2A)Stainless steel (rust-proof V4A)Free-cutting/mild steelTool steelSpring steelCold extruding steel
Industries
Machine tool manufacturingFurniture industryPrecision engineering, mechatronics and opticsHydraulic and pneumatic industryDrive and gear engineeringHousehold appliance industryMechanical engineeringAutomation and control engineeringMilitary engineeringAir conditioning, refrigeration and ventilation industryChemical industryMedical technologyPlant engineering and constructionAutomotive and vehicle constructionElectrical industryPower generation and transmission industryAerospace and aviation industryPackaging industryLighting industryBuilding, agricultural and forestry machinery manufacturingSpecial purpose machinery manufacturingFittings engineeringApparatus engineeringMining and tunnel engineeringConstruction and architectural suppliesPaper and printing machinery industryMeasurement and control technique, laboratory equipmentRailway and rail vehicles industryOffice machinery and suppliesInformation technology (hardware)Boiler, container and tank construction Clean room technologyShipbuilding industryTelecommunication industry
Certificates
ISO 9001:2015
ISO 14001
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