Iron castings

Iron castings

We at GMH Gruppe supply our customers with the best iron casting solutions for their applications – along the entire value chain. From design to delivery, we combine our skills and expertise to meet even the most complex, highly individual requirements.

Request Quotation


When we speak of iron casting, we have not only the series or one-off cast item in mind. Instead, we deliver integrated solutions: from design support and pattern, core and mould making through to melting, heat treatment, fettling, surface treatment, machining and complete, ready-to-install assembly.   

Production process

Whether it concerns a small-, medium- or large-scale series, our manufacturing process includes comprehensive consultation on request, including prototype, pre-series and series development as well as product optimisation. We find the best solution for your applications, from materials to manufacturing processes, castability check, simulation, design, lightweight construction and component optimisation.


We bring the right experts together for excellent results from cast iron. Close cooperation with the customer, comprehensive development and materials expertise as well as the flexibility and proficiency to meet complex requirements are what sets us apart.  We fulfil customer requests with precision, including where quality and supply logistics are concerned.

  • From development to ready-to-install and pre-assembled series components
  • High materials expertise for a great variety of grades
  • Rapid prototyping (3D printing for pattern and core making)

Materials expertise

Our range of materials includes all grey and ductile cast iron grades according to DIN EN 1561 and DIN EN 1563. Special alloys and alloys to customer specifications, incl. EN-GJV (vermicular graphite cast iron), EN-GJS-XSiMo and Ni-resist alloys round out our production range.

Our supply range

Engine construction

Complex, core-intensive components, including those for high-temperature applications, machined and/or as assemblies ready-to-install.

Product Material Weight range  
Cylinder heads EN-GJL, EN-GJV, EN-GJS 10 – 80 kg Request quotation
Engine blocks EN-GJL, EN-GJV 30 – 75 kg Request quotation
Exhaust manifolds

EN-GJS, EN-GJS-XSiMo; Ni-Resist

3 – 40 kg Request quotation
Turbocharger housings EN-GJS, EN-GJS-XSiMo; Ni-Resist 3 – 40 kg Request quotation
Water pump housings


5 – 25 kg Request quotation
Diverse additional, customised
engine attachments
All 3 – 130 kg Request quotation

Cooling and supercharger technology

Core-intensive, pressure-tight housing parts

Product Material Weight range  
Supercharger housings EN-GJL, EN-GJS 15 – 130 kg Request quotation
Compressor housings EN-GJL, EN-GJS 15 – 130 kg Request quotation
Various additional, customised compressor parts All 3 – 130 kg Request quotation

Commercial vehicle construction

Gearbox and axle components; frame attachments, incl. machining.

Product Material Weight range  
Gearbox housings EN-GJL, EN-GJS 15 – 80 kg Request quotation

Distributor gear housings


40 – 80 kg Request quotation

Planetary carriers


10 – 30 kg Request quotation

Axle housings

EN-GJS 40 – 80 kg Request quotation

Coupling bodies

EN-GJS 10 – 25 kg Request quotation

Frame attachments

EN-GJS 5 – 25 kg Request quotation

Agricultural equipment

Gearbox and axle components; add-on parts for frames, and attachment parts.

Product Material Weight range  
Internal gear housings EN-GJL, EN-GJS 15 – 50 kg Request quotation

Slewing gear housings

EN-GJL, EN-GJS 5 – 40 kg Request quotation
Channel plates EN-GJS 20 – 40 kg Request quotation
Rear axle covers EN-GJS 100 – 130 kg Request quotation
Swingbases EN-GJS 50 – 70 kg Request quotation
Front plates EN-GJS 25 – 50 kg Request quotation
Slide rails EN-GJS 10 – 40 kg Request quotation

Drive technology

Gearbox parts for electric gear motors and off-highway applications.

Product Material Weight range  
Gearbox housings EN-GJL, EN-GJS 5 – 80 kg Request quotation

Laminated cores

EN-GJS 10 – 20 kg Request quotation
Coil bodies EN-GJS 5 – 25 kg Request quotation

Ready-to-install, pre-assembled components

In addition to casting production, we offer further processing services in cooperation with highly qualified service providers. As a TIER 1 supplier, we can coordinate customer requests for machinging services, thermal insulation solutions, pre- and final assembly services, even taking over procurement and quality responsibility for the assembly parts used. Our highly skilled specialists work closely with our partners in precisely and fully meeting our customers' requirements.

This may also be of interest to you

Do you have a question on our Products? Just contact us!

Thank you very much.

We will contact you immediately!

An error has occurred!

Please try again later.

* = required field


Carsten Hinz

Sales Director Casting Parts Harz Guss Zorge GmbH