Friction refers to the force that arises between two surfaces in contact with each other during movement and counteracts this movement.
Friction is omnipresent in technical systems – on the one hand, it is necessary, for example, to transmit motion in a controlled manner, but on the other hand, it is undesirable because it causes energy losses in the form of heat and can lead to wear.
Tribology systematically examines friction, wear and lubrication, and classifies friction conditions. With sufficient lubricating film friction, a lubricating film separates the surfaces, reduces friction and minimises material removal.
In contrast, dry or mixed friction often leads to increased wear, greater heat generation and higher maintenance costs. The targeted selection of lubricants, dosing techniques and surface coatings can minimise friction, optimise energy efficiency and increase the service life of mechanical components.
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