For decades, Optibelt has been one of the leading manufacturers of high-quality belt drives, including V-belts and timing belts. We spoke with Sebastian Arens, Sales Manager for North Rhine-Westphalia at Optibelt, about how the company leverages its “Made in Europe” production to serve customers across industries worldwide. In the interview, Mr. Arens explains the strategies behind Optibelt’s product portfolio, how modern technologies influence the development and manufacturing of V-belts, and the opportunities and challenges of European production. He also shares insights into the future of belt drive technology.

Mr. Arens, please introduce yourself and Optibelt. What sets your company apart, and who are your customers?
Sebastian Arens: The Arntz Optibelt Group has stood for precision, reliability, and innovation in power transmission for over 150 years, with deep roots in Europe, especially Germany. Emil Arntz founded the company in 1872 as the “Höxtersche Gummifädenfabrik” in Höxter, East Westphalia. The company has remained family-owned ever since. Since November 2024, the management of Arntz Optibelt Group consists of Regina Arning (CEO) and Konrad Ummen, the great-great-grandson of Emil Arntz.

We design and manufacture high-quality V-belts and power transmission solutions used worldwide in machinery, production plants, and industrial processes. I joined the Optibelt family in 2011 and have been responsible for sales in North Rhine-Westphalia since mid-2024. Our customers – from traditional machinery manufacturers to high-tech producers – value our combination of technical expertise, rapid responsiveness, and long-term partnership. With our “Made in Europe” solutions, we offer not just products but reliable power transmission concepts that combine efficiency, quality, and service.

What types of belts do you manufacture? Do you focus more on a broad product range or specialization?
Sebastian Arens: Our portfolio combines both breadth and specialization. We offer a comprehensive standard range for various applications while also developing tailored solutions for demanding drives. This includes classic V-belts and narrow V-belts for standard drives, power bands for compact high-performance applications, timing belts for precise and synchronous movements, ribbed belts for auxiliary drives and multiple drive systems, and specialty belts such as endless flat belts, open-ended belts, or polyurethane variants for unique requirements.

Our product range is complemented by tensioning and idler pulleys, as well as accessories such as measuring devices, repair kits, and technical components for installation, maintenance, and system integration. This ensures that the right product is always available for every application. The key focus remains technical competence, reliability, and on-time delivery.

Which industries or applications are your V-belts primarily designed for?
Sebastian Arens: Our V-belts are designed for a wide range of industrial applications, particularly in machinery, conveyor technology, packaging and processing plants, and general power transmission.

They are used wherever high machine availability, long service life, and low total costs are critical. Typical examples include conveyor belts in the food industry, packaging lines in consumer goods production, or drives in energy and building material plants. In short, wherever efficiency and operational reliability are required, Optibelt ensures smooth and reliable motion.

A practical example can even be found at PICARD: the conveyor belts in their new fully automated shuttle warehouse are equipped with Optibelt Conveyor Power belts, manufactured at our facility in Romania.

How do automation and artificial intelligence influence your daily work at Optibelt?
Sebastian Arens: Automation and AI now play an integral role in our development and manufacturing processes. We use data-driven optimization for product design, lifespan forecasting, and quality control. This results in belts with consistently high quality that meet the increasing demands of modern drive systems.

Can you give concrete examples of how these technologies are applied at Optibelt?
Sebastian Arens: Certainly. In our central warehouse, product storage and retrieval are automated, as is tool logistics at our plant in China. Laboratory equipment for quality assurance of raw materials also runs automatically. Beyond this, we use AI not only to develop new formulations – though there are still some limitations – but mainly to address complex challenges.

This ranges from analyzing and optimizing tool coatings, understanding complex customer applications, to developing new methodological approaches. Another exciting example is our internal AI assistant, “Optibot,” which translates work documents into Romanian or Chinese in seconds – a real efficiency gain for our operations.

What benefits do these technologies offer to your customers?
Sebastian Arens: These technologies help us shorten innovation cycles and minimize downtime for our customers – a clear advantage in dynamic production environments. Ultimately, it’s about supporting our customers with reliable, high-performance products while remaining flexible to new requirements.

Optibelt manufactures not only in Europe but at nine locations worldwide. What are the advantages and challenges of European production?
Sebastian Arens: “Made in Europe” stands for top-quality products, short support channels, and reliable supply chains. Particularly noteworthy is the high traceability of our products, combined with strict environmental and occupational safety standards – advantages that our customers value.

Of course, production in Europe comes with challenges, such as higher energy and raw material costs and complex capacity planning. Nevertheless, the advantages clearly outweigh the challenges: we ensure stability, quality, and service at consistently high levels.

A good example is our Romanian facility, where we manufacture a broad range of ribbed belts, V-belts, and power bands. At our headquarters in Höxter, Westphalia, we focus on specialty and custom belts as well as technically demanding new developments, which are also tested in our in-house test field.

Often overlooked is that our international plants – nine worldwide – are closely integrated with our headquarters in Höxter. They follow the same quality standards and are guided by centralized development and manufacturing protocols. This ensures that our customers can rely on the same Optibelt quality worldwide, regardless of where the product is made.

Sustainability and energy efficiency are increasingly important in industry. What measures does Optibelt take to produce environmentally friendly and durable belts? What quality standards and certifications do your products meet?
Sebastian Arens: Sustainability is a core part of our corporate strategy. We use environmentally responsible materials, energy-efficient production processes, and produce durable products.

Measures include energy-saving programs, recyclable packaging, and ongoing optimization of production to reduce our CO₂ footprint. Our products naturally meet all relevant quality standards and certifications to ensure maximum safety and performance.

The Arntz Optibelt Group has also implemented numerous initiatives to achieve its ambitious climate targets. For example, the manufacturing plant in Höxter hosts the region’s largest ground-mounted photovoltaic system, producing 1.4 MWp and covering a significant portion of energy demand. Additionally, buildings are equipped with energy-efficient LED lighting, the vehicle fleet is gradually transitioning to electric mobility, and the company consistently sources green electricity and biogas. In material management, Optibelt recycles rubber internally, and fillers from the vulcanization process are reused – a significant contribution to resource conservation and circular economy.

What is the future of the V-belt in light of new drive technologies? Are there any exciting developments in this field?
Sebastian Arens: The future of the V-belt is more exciting than ever. Despite new drive technologies, V-belts remain a central element of modern power transmission: robust, efficient, and versatile. Our task is to combine this proven technology with innovative ideas to make it future-ready.

We see a clear trend toward more flexible profile options, higher power density, and improved resistance to heat and wear. Particularly exciting are hybrid drive solutions that combine multiple technologies and place new demands on belt technology.

It should not be forgotten: very few drives offer such a low power-to-weight ratio, minimal lubrication requirements, and low cost as belt drives. Their flexibility is impressive – whether absorbing shocks in road milling machines, damping vibrations in automotive auxiliary drives, or ensuring quiet operation in printing presses. In agricultural machinery, belts even act as safety clutches to prevent engine damage during blockages.

And as polymer products, drive belts still have vast potential for innovation. Unlike materials like steel, whose development has plateaued, belt performance roughly doubles every five years. They become more efficient, more sustainable, and continue to open up new applications. A good example is timing belts in bicycles, increasingly replacing traditional chains: no lubrication, no greasy trousers.

In short: V-belts are not only relevant but continue to evolve dynamically, and at Optibelt, we are actively shaping this future.

Thank you for this insightful conversation, Mr. Arens!