Castings in grey cast iron, ductile iron, vermicular graphite iron and aluminium gravity die casting – up to 2,500 kg, machined and ready for assembly.
Gießerei HEUNISCH GmbH
Bad Windsheim · Steinach (Thuringia) · Krásná (CZ)New on Amplifa
About HEUNISCH
Gießerei HEUNISCH GmbH is a family-run foundry group headquartered in Bad Windsheim with around 800 employees at three sites in Germany and the Czech Republic. The company produces castings in grey cast iron (EN-GJL), ductile iron (EN-GJS), vermicular graphite iron (EN-GJV) and aluminium gravity die casting to DIN EN 1706 – from machine-moulded series parts from 0.5 kg up to hand-moulded large castings weighing 2,500 kg each. The production range covers the entire process chain from design consulting and casting simulation through pattern making, die and tool making to heat treatment, CNC machining, coating, technical cleaning and assembly. The moulding lines in Bad Windsheim are designed for series sizes of approx. 500 to 50,000 castings per year; hand-moulded large castings are produced in Steinach, and aluminium gravity die casting including CNC machining in Krásná (CZ). Customers include agricultural machinery, compressor and commercial vehicle engineering, drive technology, construction machinery, marine technology as well as hydraulics and valves.
- Site
- Bad Windsheim
- Processes
- Grey cast iron, machine-moulded (DIN EN 1561), Grey cast iron, hand-moulded (DIN EN 1561), Ductile iron, machine-moulded (DIN EN 1563), Ductile iron, hand-moulded (DIN EN 1563), Vermicular graphite iron, machine-moulded (DIN ISO 16112), Gravity die casting (aluminium, DIN EN 1706), Tilting die casting (aluminium, DIN EN 1706), Low-pressure die casting (aluminium, DIN EN 1706)
- Materials
- Grey cast iron, Alloyed grey cast iron, Ductile iron, Ductile iron SiMo, Vermicular graphite iron, Aluminium alloys, Ni-Resist, Grey cast iron (DIN EN 1561)
- Certificates
- ISO 9001:2015, ISO 9001:2015 (Slévárna HEUNISCH, s.r.o., Krásná), ISO 50001:2018, ISO 14001:2015, ISO 14001:2015 (Krásná), Pressure Equipment Directive 2014/68/EU Annex I Chapter 4.3 (Bad Windsheim), Pressure Equipment Directive 2014/68/EU Annex I Chapter 4.3 (Steinach), Lloyd's Register – Approved Manufacturer of Iron Castings (grey and, EN ISO 9001, ISO 50001, ISO 14001, Pressure Equipment Directive 2014/68/EU, Lloyd's Register, DNV, Bureau Veritas Mode II
- Founded
- 1980
- Employees
- over 800
- Industries
- Agricultural machinery, Compressor engineering, Commercial vehicle engineering, Drive technology, Construction machinery, Marine technology
- 01
Design consulting
- 02
Solidification and casting process simulation
- 03
Pattern making
- 04
Die making / tool making
- 05
Casting production (sand casting, gravity die casting)
- 06
Heat treatment
- 07
Fettling
- 08
CNC machining
- 09
Coating / washing
- 10
Assembly
- 11
Logistics on call-off
Materials and Production Processes
Grey cast iron (DIN EN 1561)
Machine-moulded series parts and hand-moulded large parts in EN-GJL-200, -250, -300 as well as alloyed GJL-CrMo.
Ductile iron (DIN EN 1563)
EN-GJS-400 to -700 and EN-GJS-SiMo for robust safety and series components.
Vermicular graphite iron (DIN ISO 16112)
EN-GJV-300/-400 for components under high thermal and mechanical loads such as compressor housings.
Aluminium alloys (DIN EN 1706)
Gravity die casting in gravity, tilting and low-pressure processes, 0.5 to 50 kg part weight.
Ni-Resist
Alloyed cast iron for special applications, documented in the certification area.
Sites
Bad Windsheim
DEHeadquarters, production of machine-moulded castings (GJL, GJS, GJV), administration
- Part weight / size
- 20–600 kg
- Lot size
- approx. 500–50,000 castings/year
- Materials
- GJL, GJS, GJV, Ni-Resist
- Hot-blast cupola furnace
- 3 medium-frequency induction furnaces
- Moulding line (grey line) 1300×1060×420/420 mm
- BMD moulding line 800×650×300/300 mm
- Core-shooting machines (5–180 l shot volume)
- fully automatic casting fettling robots
- Dip-priming system
- Spray painting workstations
- 3D measuring machines
- metallurgical laboratory
Steinach
DEProduction of hand-moulded grey and ductile iron castings up to 2,500 kg
- Part weight / size
- 100–2,500 kg
- Lot size
- Small series, one-off pieces, spare parts
- Materials
- GJL, GJS, Ni-Resist
- Hand moulding shop
Krásná
CZAluminium gravity die casting, CNC machining, washing, assembly
- Part weight / size
- 0.5–50 kg
- Materials
- Aluminium alloys, GJL/GJS (machining)
- Gravity, tilting and low-pressure die casting systems
- Lathes
- vertical and horizontal machining centres
- 5-axis machining centres
- 2 washing machines
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Grey cast iron, machine-moulded (DIN EN 1561)Casting | – | – | 20 kg – 600 kg | approx. 500 castings/year – approx. 50,000 castings/year | EN-GJL-200, EN-GJL-250, EN-GJL-300, GJL-CrMo |
| Grey cast iron, hand-moulded (DIN EN 1561)Casting | – | – | 100 kg – 2500 kg | – | EN-GJL-200, EN-GJL-250, EN-GJL-300, GJL-CrMo |
| Ductile iron, machine-moulded (DIN EN 1563)Casting | – | – | 30 kg – 150 kg | approx. 500 castings/year – approx. 50,000 castings/year | EN GJS-400, EN GJS-500, EN GJS-600, EN GJS-700, EN GJS-SiMo |
| Ductile iron, hand-moulded (DIN EN 1563)Casting | – | – | 100 kg – 2500 kg | – | EN GJS-400, EN GJS-500, EN GJS-600, EN GJS-700, EN GJS-SiMo |
| Vermicular graphite iron, machine-moulded (DIN ISO 16112)Casting | – | – | 30 kg – 150 kg | approx. 500 castings/year – approx. 50,000 castings/year | EN-GJV-300, EN-GJV-400 |
| Gravity die casting (aluminium, DIN EN 1706)Casting | – | – | 0.5 kg – 50 kg | – | Aluminium alloys |
| Tilting die casting (aluminium, DIN EN 1706)Casting | – | – | 0.5 kg – 50 kg | – | Aluminium alloys |
| Low-pressure die casting (aluminium, DIN EN 1706)Casting | – | – | 0.5 kg – 50 kg | – | Aluminium alloys |
| CNC machining (drilling, milling, turning)Machining | tight tolerances (not specified) | – | – | – | Grey cast iron, Ductile iron, Aluminium alloys |
| Heat treatment (annealing, hardening, carburising, case hardening, nitriding, boriding; aluminiumHeat treatment | – | – | – | – | Iron castings, Aluminium alloys |
| Surface coating (preservation, priming, painting; KTL, powder coating)Surface | – | – | – | – | Grey cast iron, Ductile iron, Aluminium alloys |
| Industrial washing / technical cleaningSurface | – | – | – | – | Aluminium alloys |
| Assembly / pre-assembly of assembliesAssembly | – | – | – | – | – |
| Design consulting / cast-optimised designEngineering | – | – | – | – | – |
| Solidification and casting process simulationEngineering | – | – | – | – | – |
| Pattern makingEngineering | – | – | – | – | – |
| Die making (steel dies for aluminium casting)Engineering | – | – | – | – | – |
| Tool making (clamping fixtures for CNC machining)Engineering | – | – | – | – | – |
14 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Hot-blast cupola furnace | – | – | – | – | Bad Windsheim |
| Medium-frequency induction furnaces | – | 3 | – | – | Bad Windsheim |
| Moulding line (grey line) | – | – | 1300 × 1060 × 420/420 mm | – | Bad Windsheim |
| Moulding line (BMD line) | BMD | – | 800 × 650 × 300/300 mm | – | Bad Windsheim |
| Core-shooting machines | – | – | Shot volume 5 to 180 litres | – | Bad Windsheim |
| Casting fettling robots (fully automatic) | – | – | – | – | Bad Windsheim |
| Dip-priming system | – | – | – | – | Bad Windsheim |
| Spray painting workstations for surface treatment | – | – | – | – | Bad Windsheim |
| 3D measuring machines | – | – | – | – | Bad Windsheim |
| Lathes | – | – | – | – | Krásná |
| Vertical machining centres | – | – | – | – | Krásná |
| Horizontal machining centres | – | – | – | – | Krásná |
| 5-axis machining centres | – | – | – | – | Krásná |
| Washing machines | – | 2 | – | – | Krásná |
Additional services
Quality and Certifications
Quality assurance includes a metallurgical laboratory for materials testing as well as 3D measuring machines for geometric inspection at the Bad Windsheim site. All three sites are certified to EN ISO 9001; in addition, there are certifications under ISO 14001, ISO 50001, the Pressure Equipment Directive 2014/68/EU as well as approvals by Lloyd's Register, DNV and Bureau Veritas.
| Evidence | Bad Windsheim | Steinach | Krásná |
|---|---|---|---|
| EN ISO 9001 | |||
| ISO 50001 | |||
| ISO 14001 | |||
| Pressure Equipment Directive 2014/68/EU | |||
| Lloyd's Register | |||
| DNV | |||
| Bureau Veritas Mode II |
Company History
- 1980
Gießerei Heunisch GmbH is founded from the insolvency of agricultural machinery manufacturer Schmotzer.
- 1984
Acquisition of Gießerei Hofmann GmbH, Bad Windsheim.
- 1992
Acquisition of Slévárna Aš in the Czech Republic; start of machining in Krásná.
- 1997
Dr. Heunisch-Grotz joins the company and jointly manages the business with Wolfgang Heunisch.
- 1998
Acquisition of Gießerei Steinach in Thuringia.
- 2001
Expansion of machining in Krásná.
- 2003
Merger of the two foundries in Bad Windsheim.
- 2006
Acquisition of the Zetor foundry, renamed Slévárna Heunisch Brno, s.r.o.
- 2014
Slévárna Heunisch a.s. renamed Slévárna HEUNISCH, s.r.o.
- 2016
Wolfgang Heunisch retires; Christian Gerhäuser joins as additional managing director.
- 2025
Sale of Slévárna Heunisch Brno, s.r.o.