Manufactures castings in grey cast iron, spheroidal graphite cast iron, vermicular graphite cast iron and aluminium permanent mould casting up to 2,500 kg piece weight.
Gießerei HEUNISCH GmbH
Bad Windsheim (DE) · Steinach (DE) · Krásná (CZ)New on Amplifa
About HEUNISCH
Gießerei HEUNISCH GmbH, headquartered in Bad Windsheim, is a family-owned company with around 800 employees at three production sites in Germany and the Czech Republic. It manufactures demanding castings in grey cast iron (EN-GJL), spheroidal graphite cast iron (EN-GJS), vermicular graphite cast iron (EN-GJV) and aluminium permanent mould casting; piece weights range from 0.5 kg to 2,500 kg across all materials. At the headquarters in Bad Windsheim, machine-moulded series parts are produced; in Steinach/Thuringia, hand-moulded heavy castings; and in Krásná (CZ), aluminium permanent mould castings with in-house CNC machining, washing technology and assembly. The process chain covers design consulting, solidification simulation, pattern and tool making, casting technology, heat treatment, CNC machining, coating, cleaning and delivery ready for assembly. The components serve, among others, agricultural and commercial vehicle technology, compressor and mechanical engineering, drive technology, construction machinery, marine technology, and hydraulics and valve technology.
- Site
- Bad Windsheim
- Processes
- Machine-moulded grey cast iron (GJL), Hand-moulded grey cast iron (GJL), Machine-moulded spheroidal graphite cast iron (GJS), Hand-moulded spheroidal graphite cast iron (GJS), Machine-moulded vermicular graphite cast iron (GJV), Gravity permanent mould casting (aluminium), Tilting permanent mould casting (aluminium), Low-pressure permanent mould casting (aluminium)
- Materials
- Grey cast iron, Spheroidal graphite cast iron, Vermicular graphite cast iron, Aluminium alloys, Ni-Resist, Grey cast iron (EN-GJL-200/250/300, GJL-CrMo), Spheroidal graphite cast iron (EN-GJS-400 to 700, EN-GJS-SiMo), Vermicular graphite cast iron (EN-GJV-300/400)
- Certificates
- ISO 9001:2015, ISO 50001:2018, ISO 14001:2015, Pressure Equipment Directive 2014/68/EU Annex I Chapter 4.3, Lloyd's Register Approved Manufacturer of Iron Castings, DNV, Bureau Veritas Mode II, EN ISO 9001, EN ISO 14001, EN ISO 50001, Lloyd's Register
- Founded
- 1980
- Employees
- 800
- Industries
- Agricultural technology, Compressor engineering, Commercial vehicle technology, Drive technology, Construction machinery, Marine technology
- 01
Design consulting
- 02
Solidification simulation
- 03
Pattern making
- 04
Permanent mould and tool making
- 05
Casting process (sand casting/permanent mould casting)
- 06
Heat treatment
- 07
Fettling
- 08
CNC machining
- 09
Coating/cleaning
- 10
Assembly/pre-assembly
- 11
Call-off logistics
Materials and Processes
Grey cast iron (EN-GJL-200/250/300, GJL-CrMo)
Machine-moulded series parts 20–600 kg in Bad Windsheim, hand-moulded heavy parts 100–2,500 kg in Steinach.
Spheroidal graphite cast iron (EN-GJS-400 to 700, EN-GJS-SiMo)
Durable series and heavy components with defined mechanical properties according to DIN EN 1563.
Vermicular graphite cast iron (EN-GJV-300/400)
For thermally and mechanically highly stressed components such as engine blocks, cylinder heads and compressor housings.
Aluminium alloys according to DIN EN 1706
Permanent mould castings 0.5–50 kg for weight optimisation and good thermal conductivity.
Ni-Resist (nickel-hard cast iron)
For special application requirements in grey and spheroidal graphite iron.
Machine-moulded sand casting
Moulding lines with box sizes 1300×1060×420/420 mm and 800×650×300/300 mm.
Hand-moulded heavy castings
Small series, one-off pieces and core-intensive components up to 2,500 kg.
Gravity, tilting and low-pressure permanent mould casting
Aluminium castings with varying requirements for geometry, leak-tightness and surface quality.
Locations
Bad Windsheim
DEHeadquarters, machine-moulded grey, spheroidal graphite and vermicular graphite castings, further processing, quality
- Part weight / size
- 20–600 kg
- Lot size
- approx. 500–50,000 castings/year
- Materials
- EN-GJL, EN-GJS, EN-GJV
- 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 litres)
- Fettling robots
- Dip priming line
- Spray painting workstations
- 3D measuring machines
- metallurgical laboratory
Steinach
DEGießerei HEUNISCH, Steinach GmbH – hand-moulded heavy castings
- Part weight / size
- 100–2,500 kg
- Lot size
- Small series, one-off pieces
- Materials
- EN-GJL, EN-GJS, Ni-Resist
- Hand moulding shop
- Heat treatment
- Surface treatment
Krásná
CZSlévárna HEUNISCH, s.r.o. – aluminium permanent mould casting, CNC machining, washing, assembly
- Part weight / size
- 0.5–50 kg
- Lot size
- Series production
- Materials
- Aluminium alloys according to DIN EN 1706
- Gravity, tilting and low-pressure permanent mould casting machines
- Lathes
- Vertical, horizontal and 5-axis machining centres
- 2 washing machines
Castings
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Machine-moulded grey cast iron (GJL)Casting | – | Box size 1300 x 1060 x 420/420 mm | 20 kg – 600 kg | 500 castings/year – 50,000 castings/year | EN-GJL-200, EN-GJL-250, EN-GJL-300, GJL-CrMo |
| Hand-moulded grey cast iron (GJL)Casting | – | – | 100 kg – 2,500 kg | – | EN-GJL-200, EN-GJL-250, EN-GJL-300, GJL-CrMo |
| Machine-moulded spheroidal graphite cast iron (GJS)Casting | – | Box size 800 x 650 x 300/300 mm | 30 kg – 150 kg | 500 castings/year – 50,000 castings/year | EN-GJS-400, EN-GJS-500, EN-GJS-600, EN-GJS-700, EN-GJS-SiMo |
| Hand-moulded spheroidal graphite cast iron (GJS)Casting | – | – | 100 kg – 2,500 kg | – | EN-GJS-400, EN-GJS-500, EN-GJS-600, EN-GJS-700, EN-GJS-SiMo |
| Machine-moulded vermicular graphite cast iron (GJV)Casting | – | Box size 800 × 650 × 300/300 mm | 30 kg – 150 kg | 500 castings/year – 50,000 castings/year | EN-GJV-300, EN-GJV-400 |
| Gravity permanent mould casting (aluminium)Casting | – | – | approx. 0.5 kg – 50 kg | – | Aluminium alloys according to DIN EN 1706 |
| Tilting permanent mould casting (aluminium)Casting | – | – | approx. 0.5 kg – 50 kg | – | Aluminium alloys according to DIN EN 1706 |
| Low-pressure permanent mould casting (aluminium)Casting | – | – | approx. 0.5 kg – 50 kg | – | Aluminium alloys according to DIN EN 1706 |
| CNC machining (drilling, milling, turning)Machining | – | – | – | – | Grey cast iron, Spheroidal graphite cast iron, Vermicular graphite cast iron, Aluminium alloys |
| Heat treatment (annealing, hardening, carburising, case hardening, nitriding, boriding)Heat treatment | – | – | – | – | Cast iron, Aluminium |
| Surface coating (corrosion protection, priming, painting)Surface | – | – | – | – | – |
| KTL coating (cataphoretic electrodeposition coating)Surface | – | – | – | – | – |
| Powder coatingSurface | – | – | – | – | – |
| Electroplating (chromating, phosphating)Surface | – | – | – | – | – |
| Industrial washing / cleaningSurface | – | – | – | – | Aluminium castings |
| Assembly / pre-assembly of modulesAssembly | – | – | – | – | – |
| Pattern makingEngineering | – | – | – | – | – |
| Permanent mould makingEngineering | – | – | – | – | Steel (permanent moulds) |
| Tool making (clamping fixtures, moulds)Engineering | – | – | – | – | – |
| Design consultingEngineering | – | – | – | – | – |
| Solidification simulationEngineering | – | – | – | – | – |
14 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Hot-blast cupola furnace | – | 1 | – | – | Bad Windsheim |
| Medium-frequency induction furnaces | – | 3 | – | – | Bad Windsheim |
| Moulding line (Grey Line) | – | – | 1300 × 1060 × 420 / 420 mm | – | Bad Windsheim |
| Moulding line (BMD line) | – | – | 800 × 650 × 300 / 300 mm | – | Bad Windsheim |
| Core-shooting machines | – | – | Shooting volume 5 to 180 litres | – | Bad Windsheim |
| Fettling robots | – | – | – | – | Bad Windsheim |
| Dip priming line | – | – | – | – | 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 covers the entire process chain from enquiry to delivery and is supported by a metallurgical laboratory for materials testing and 3D measuring machines for geometric inspection at the Bad Windsheim site. The plants operate according to site-specific certifications and industry-specific proofs.
| Evidence | Bad Windsheim | Steinach | Krásná |
|---|---|---|---|
| EN ISO 9001 | |||
| EN ISO 14001 | |||
| EN ISO 50001 | |||
| Pressure Equipment Directive 2014/68/EU Annex I Chapter 4.3 | |||
| Lloyd's Register | |||
| DNV | |||
| Bureau Veritas Mode II |
Company History
- 1980
Gießerei Heunisch GmbH is founded out of the insolvency of agricultural machinery manufacturer Schmotzer.
- 1984
Acquisition of Gießerei Hofmann GmbH in 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 operations in Krásná.
- 2003
Merger of the two foundries in Bad Windsheim.
- 2006
Acquisition of Gießerei Zetor and renaming to Slévárna Heunisch Brno, s.r.o.
- 2014
Renaming of Slévárna Heunisch a.s. to Slévárna HEUNISCH, s.r.o.
- 2016
Wolfgang Heunisch steps back; Christian Gerhäuser joins as another managing director.
- 2025
Sale of Slévárna Heunisch Brno, s.r.o.