Rubber tracks for less vibration and more traction

In the modern construction machinery sector, rubber tracks have long been more than just wear parts. They influence ride comfort, ground protection, traction and, last but not least, a machine’s productivity.

At bauma, Guma-Tech is presenting several developments that demonstrate just how much this sector has evolved in recent years. The focus is on solutions for vibration reduction, special tracks for extreme slopes, and new approaches to recycling end-of-life rubber tracks. The company has been one of Europe’s established manufacturers of rubber tracks for many years and, according to its own statements, is consistently committed to the further development of existing systems. This is not solely about longer service life or load-bearing capacity, but increasingly also about ergonomics, sustainability and resource conservation.

Guma-Tech AVT track significantly reduces vibrations

One of the most important innovations is the so-called AVT track. The abbreviation stands for Anti-Vibration Track and already describes the central focus of the development. A special guide within the track is designed to significantly reduce vibrations and shocks. According to the manufacturer, vibrations can be reduced by up to 75 per cent, depending on the machine and track size. The benefits extend to both the machine and the operator. Whilst the mechanical stresses on the undercarriage and components are reduced, the machine operator simultaneously benefits from a quieter working environment. Particularly with mini excavators, compact machines or other tracked vehicles, operators often spend seven to eight hours a day on the machine. Constant vibrations can lead to fatigue and physical strain. A noticeable reduction in vibrations therefore not only improves comfort but can also enhance concentration and the quality of work.

KS track for extreme gradients and difficult terrain

A second focus is on the KS track, which has been specially developed for applications involving steep gradients. A striking feature is the integrated spikes, which give the track its distinctive appearance. The design allows for use on gradients of up to 100 per cent. Such conditions are encountered, for example, with flail mowers along motorway embankments or when working on difficult terrain. In such situations, there is often a risk of machines slipping sideways or losing traction. The development follows a principle familiar from road traffic: the advantages of a rubber track are combined with additional mechanical interlocking. The concept is comparable to winter tyres that are additionally fitted with snow chains.

The development of this special track took around one and a half years. In addition to the actual design, extensive practical testing was required. Today, the solution is already being successfully used by original equipment partners. Key features of the track systems presented:

• AVT track with significantly reduced vibrations
• up to 75 per cent fewer vibrations depending on the application
• Reduced strain on machine and operator
• KS track with integrated spikes for difficult terrain
• Use on gradients of up to 100 per cent
• Extensive practical testing prior to series production
• Specialised solutions for different areas of application

Recycling of end-of-life rubber tracks is gaining importance

Alongside technical innovations, the issue of the end of a rubber track’s life cycle is increasingly coming into focus. Whilst established take-back systems exist for car tyres in many countries, comparable structures for rubber tracks have largely been lacking to date. This is precisely where Guma-Tech is working on a solution together with a partner. The concept involves setting up special collection racks at dealers. End-of-life tracks are collected there and subsequently collected via a dedicated logistics system. The return process is not simply disposal, but rather the recovery of raw materials. In a specialised process, the various material components are separated from one another. Steel, rubber and other composite materials can then be returned to the raw material cycle.

From rubber track recycling to new raw materials

The recycling of the rubber components is particularly interesting. After processing, granules are produced that can be used for various applications. Such recycled materials are used, for example, in gardening and landscaping, on playgrounds or in other areas where elastic and durable surfaces are required. At the same time, valuable raw materials are preserved rather than being lost as waste. The steel contained in the tracks is also recovered and reused industrially. In view of rising raw material prices and growing sustainability requirements, this approach is becoming increasingly important.

Development goes beyond the track itself

The solutions presented demonstrate that innovations in the field of rubber tracks go far beyond traditional improvements in wear resistance or durability. Comfort, occupational safety and sustainability are becoming increasingly important areas of development. Whilst the AVT track aims to reduce the strain on both machine and operator, the KS track opens up new applications in difficult terrain. At the same time, the recycling concept highlights that, in future, it will not just be a product’s usage phase that is considered, but its entire life cycle. For operators of construction machinery, this means greater choice for specialised applications and, at the same time, new opportunities to use resources more efficiently. Particularly in an industry that must increasingly focus on cost-effectiveness and sustainability, such developments could become significantly more important in the coming years.