Wear protection

Wear protection encompasses all technical, design-related and material-related measures used to permanently protect components, machines and systems from wear. In industrial processes, wear is one of the biggest cost drivers, as it develops gradually, is often detected late and leads to unplanned downtime. A professionally designed wear protection system extends service life, stabilises processes and significantly increases the economic efficiency of systems. Wear occurs in almost all industries – from mechanical engineering and conveyor technology to the chemical and recycling industries. A precise analysis of the loads and a material-appropriate design of the protective solution are therefore decisive.

Causes of wear

Wear arises from the interaction of mechanical, chemical and thermal influences. In practice, these factors often act in combination.

Typical causes are:

• Mechanical friction between moving components or materials
• Abrasive media such as sand, granules, bulk materials or metal chips
• Impact and shock loads from falling or impacting materials
• High flow velocities of liquids or gases
• Chemical effects from acids, alkalis, oils or solvents
• Temperature fluctuations and continuous loads in industrial continuous operation

The precise identification of the main causes is the basis for an effective wear protection solution.

Types of wear

Wear can be divided into several fundamental categories, each of which places different demands on material and design.

Abrasive wear

Abrasive wear occurs when hard particles slide over surfaces or impact them with high energy. The particles act like abrasives and continuously remove material. This type of wear is one of the most common and at the same time most aggressive forms of wear.

Typical triggers are sand, gravel, ore, granules or dusty media that are transported either dry or in liquid suspension. Abrasive wear is particularly critical where material is constantly in motion or is diverted.

Abrasive wear frequently occurs in conveyor technology, mining, mixing plants, crushers, mills and in bulk material processing. Material removal usually takes place evenly over larger areas, but can also progress very quickly locally where particle hardness is high.

Erosive wear

Erosive wear occurs when media hit a surface at high speed. In contrast to abrasive wear, the focus here is less on sliding and more on directed impact. The kinetic energy of the particles or liquids leads to progressive material removal.

Pipelines, bends, separators, cyclones and transfer points where flows are accelerated or diverted are particularly affected. Liquids containing solids can also cause erosive wear.

Erosive wear depends heavily on flow velocity, impact angle and particle size. Even small design changes or targeted wear linings can significantly reduce the load.

Corrosive wear

Corrosive wear arises from chemical reactions between the material and its environment. Media such as acids, alkalis, salts or aggressive process liquids attack the material surface and weaken its structure.

In many industrial applications, corrosive wear occurs in combination with mechanical stress. The chemical damage to the surface makes the material more susceptible to abrasion or erosion, which accelerates wear.

Corrosive wear plays a major role in the chemical, process and food industries as well as in sewage treatment plants and environmental technology. Targeted material selection and suitable protective layers are essential here.

Cavitation

Cavitation occurs in liquid-carrying systems when local pressure drops lead to the formation of vapour bubbles. These bubbles collapse abruptly as soon as they reach areas of higher pressure.

The resulting micro-implosions generate very high localised loads on the material surface. This leads to fine material flaking, which can develop into larger damage over time.

Cavitation occurs primarily on pumps, valves, impellers and throttling points. It is often difficult to detect, but in the long term causes considerable damage and performance losses if no suitable wear protection is provided.

Materials for wear protection

The selection of the right material largely determines the service life and performance of the wear protection. In practice, several material groups are often used in combination.

Metallic materials

• High-strength steels for components subject to strong mechanical stress
• Hard metals for extreme abrasion
• Weld overlays and hard coatings for local reinforcement
• High temperature and pressure resistance

Plastics and engineering materials

• Good sliding properties for reducing friction
• Low weight with sufficient strength
• High chemical resistance to many media
• Use in areas with moderate mechanical load

Elastomers in wear protection

• High elasticity for absorbing impact and shock energy
• Very good resistance to abrasive wear
• Noise- and vibration-damping properties
• Suitable for dry and wet media

Typical elastomer-based designs

• Wear protection sheets
• Linings for bunkers, chutes and hoppers
• Pipe and hose linings
• Profiles and special moulded parts

Design-based wear protection

Design-based wear protection starts at the design stage of machines, systems and components. The aim is to minimise wear-promoting loads through suitable design before they act on the material. This allows material removal to be significantly reduced and the need for complex protective materials to be lowered.

A central approach is the optimisation of geometries. Gentle transitions, larger radii and uniform cross-sections ensure that media flow more evenly and particles do not release their energy in a localised way. This can significantly reduce erosive loads, especially in conveyor technology and pipe systems.

Another important aspect is targeted flow guidance. By means of deflections, impact surfaces or defined inlet zones, wear is deliberately concentrated on areas designed for it. These zones can be specifically equipped with replaceable wear protection components, while load-bearing structures remain protected.

The positioning of components also plays a role. Components that lie directly in the material flow can be arranged in such a way that they are subjected to less load or are more easily accessible for maintenance and replacement.

Design-based wear protection also includes modular concepts in which particularly stressed components are designed as replaceable or sacrificial parts. These can be replaced quickly during maintenance without having to dismantle entire assemblies.

In practice, design-based wear protection sensibly complements material-based wear protection. The combination of well-thought-out design and suitable materials leads to longer service life, plannable maintenance intervals and overall higher system availability.

Typical areas of application for wear protection

Wear protection is used in almost all industrial sectors, in particular in:

• Mechanical and plant engineering
• Conveyor technology and bulk material industry
• Mining and raw material processing
• Chemical industry and process engineering
• Recycling and waste disposal plants
• Agricultural, construction and special-purpose machinery

In many applications, customised solutions are used that are precisely matched to the medium, load and installation situation.

Selecting the right wear protection

The selection of suitable wear protection is based on a systematic assessment of several factors:

• Type of wear and load intensity
• Mechanical and thermal stress
• Chemical resistance to media
• Maintenance and replacement concepts
• Economic requirements and life cycle costs

Careful design reduces follow-up costs and sustainably increases operational safety.

Processing and installation

The processing and installation of wear protection solutions have a considerable influence on their function, service life and economic efficiency. Even high-quality materials only develop their full protective effect if they are processed professionally and installed correctly.

Depending on the material and application, different fastening and joining techniques are used. Frequently used methods are bonding, bolting, plugging or vulcanising. The choice of method depends on load, temperature, media contact and the requirements for maintenance and replacement.

Substrate preparation plays a central role. Surfaces must be clean, dry and load-bearing to ensure a durable bond. For bonded solutions, defined surface roughness values and suitable adhesion promoters are decisive.

For bolted or modular systems, stress-free installation is important in order to avoid material deformation and premature wear. At the same time, the design should allow easy access for inspection and replacement.

In many industrial applications, segmented or modular wear protection systems have proven themselves, as they simplify repairs and minimise downtime. Forward-looking installation planning therefore contributes significantly to long-term operational safety.influences the service life decisively. Clean substrate preparation, suitable fastening systems and stress-free installation are decisive.

Economic significance of wear protection

The economic significance of wear protection goes far beyond the mere protection of individual components. In industrial systems, wear has a direct effect on availability, productivity and operating costs.

A professionally designed wear protection system reduces unplanned downtime, as critical components remain operational for longer. At the same time, maintenance intervals can be made more plannable, which simplifies maintenance and conserves personnel resources.

By protecting core components, cost-intensive repairs or the replacement of complete assemblies are avoided. This reduces not only direct spare parts costs but also indirect costs such as production losses or contractual penalties for delivery delays.

Another economic factor is the extension of system service life. Systems that are specifically protected against wear retain their performance over a longer period and allow better depreciation over the entire life cycle.

In the long term, the use of high-quality wear protection leads to more stable processes, greater planning reliability and a better overall cost balance. The investment therefore pays off through reduced follow-up costs and increased system availability.

In conclusion

Wear protection is a central success factor for the reliable and economical operation of industrial systems. Through the targeted combination of suitable materials, design measures and professional installation, wear processes can be effectively limited.

Careful analysis of the loads and an application-specific design ensure longer service life, plannable maintenance and stable system availability. In the long term, professional wear protection helps to reduce operating costs, safeguard processes and sustainably protect investments.

Frequently asked questions about wear protection

What is wear protection?

Wear protection encompasses measures and materials that protect components, machines and systems from mechanical, chemical and thermal wear and extend their service life.

When is the use of rubber in wear protection worthwhile?

Rubber is particularly suitable for abrasive media, high impact loads and where additional damping of noise and vibrations is required.

Can wear protection be individually adapted?

Wear protection solutions can generally be adapted precisely to geometry, medium, load and installation situation.

Which factors determine the service life of wear protection?

Service life is influenced by the type of wear, the load intensity, the material used, the design and the quality of processing and installation.

Can wear be completely avoided?

Wear cannot be completely ruled out technically, but it can be significantly slowed down and controlled through suitable materials, design and protective measures.

How early should wear protection be considered in planning?

Wear protection should be considered already in the design and planning phase in order to reduce later adjustments, downtime and follow-up costs.

What role does maintenance play in wear protection?

Regular inspections and scheduled maintenance enable early detection of wear and timely replacement of protective systems.

Our rubber sheets

For industry and trade, we offer a wide range of rubber sheets.

SBR rubber sheet

Our high-quality SBR rubber sheet (styrene-butadiene rubber) is the solution for numerous industrial and commercial applications. This rubber sheet is manufactured from first-class styrene-butadiene rubber and is characterised by its outstanding physical properties.

EPDM rubber sheet

Discover the versatility and reliability of our EPDM rubber sheet, which is made from ethylene propylene diene monomer (EPDM). This high-quality elastomer solution has been specially developed to meet the most demanding industrial and commercial applications.

NBR rubber sheet

The NBR rubber sheet is a high-quality industrial product that has been specially developed for applications requiring excellent resistance to oils, greases and various chemicals.

Viton rubber sheet

The Viton rubber sheet is a high-quality technical product used for a wide range of industrial applications. Made from fluoro rubber (FKM), it offers outstanding properties that make it the ideal choice for extreme conditions.

FKM rubber sheet

The FKM rubber sheet is a high-quality technical product that is ideal for use in demanding industrial applications. Manufactured from fluoro rubber (FKM), it is distinguished by a wide range of outstanding properties that make it the optimum choice for extreme operating conditions.

Silicone rubber sheet

The silicone rubber sheet is a first-class technical product that has been specially developed for applications placing high demands on temperature resistance and flexibility.

PUR rubber sheet

The PUR rubber sheet, manufactured from high-quality polyurethane, is a technically advanced product developed for applications placing the highest demands on abrasion resistance and mechanical load capacity.

Neoprene rubber sheet

The Neoprene rubber sheet, manufactured from high-quality chloroprene rubber (CR), is a versatile technical product that is ideal for a wide range of industrial and commercial applications.