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Machinery and equipment for the glass and silicon industry

ARNOLD is one of the worldwide leading manufacturers of burners, tools and machines as well as ready-to-use systems for customers in the area of silicon for semicondutor and photovoltaic, glass and quartz glass processing, fibre-optic and the automotive production.



For more than 30 years we have been operating as partners of the automotive industry and its suppliers in the automation of production processes and production procedures. Our mission is a long-term and prosperous partnership with satisfied customers, due to innovative and future-orientated know-how.
Our team of automation technology specialists will plan and produce your customized system solution, for instance in the assembly automation for aggregate and carrier components, in the automatic assembly of cable looms in the foundry practice etc.



Our core competence in photovoltaics and semiconductor poly-Si processing is the mechanic cutting, notch-and roundgrinding, surface- and chamfergrinding, squaring, rod- and profilgrinding / polishing of silicon ingots.

Arnold can offer innovative, stand alone machines, as well as machines developed according to your individual requirements and specifications, such as complete processing centres and custom-tailored complete systems with an automatic linkage of all production processes and an intelligent assembly control system.

Glass and quartz glass processing

Based on our traditional values and experience regarding the thermal and mechanical processing of glass and our ability to develop highly-engineered production lines and systems, we can offer you a wide range of burners, tools and standard machines manufactured for superior glass specialist firms as well as complex process solutions, i.e. for the solar thermal glass tube production, the high-precision resizing of quartz glass tubes, the completely automated production of laboratory and lamp-glass and other specific applications for thermal glass processing.

Short profile

- Founded in 1950

- HQ Weilburg/Lahn

- About 160 employees

The Arnold Group consists of the following companies:

- Herbert Arnold GmbH & Co. KG
- Helmich Automationstechnik
- Heathway Ltd.
- B&C



On the occasion of his 60th birthday, ARNOLD warmly congratulates the technical director, Mr. Roger Knetsch, and wishes him all the best. ​


His technical expertise, innovative strength and dedication have significantly shaped and driven our company forward! ​ May the coming years be as successful, inspiring and fulfilling as the past ones.


We look forward to many more shared milestones and successful projects under his technical leadership!

ARNOLD congratulates tech. Managing Director Roger Knetsch on his 60th birthday


Adrian Altintop k.jpg

Our trainee, Adrian Altintop, delivered a top performance in part 1 of the spring 2023 final exam as an electronics technician for industrial engineering.

He was able to achieve 94 points for the work task with situational discussion phases and 81 points for the written task.


Congratulations on this great result!

Adrian Altintop delivers top performance in the final exam


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Our clearly arranged catalogs in PDF format

Inform yourself about our machines, burners and tools, clearly arranged in our catalogs and complete with all details and technical data 
To the downloads >>

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