Wear depends on the conditions of friction and the state of friction. The friction material is mostly in the form of dry friction, and this friction condition without lubrication is a harsh condition for the friction pair, which will inevitably cause wear and increase the matching gap, and affect the braking performance. Kuma a karkashin yanayi na yau da kullun, wanda ke sa bangaren tashin hankali ya zama mara nauyi, kuma sanya rake da rata shi ne kuma mara kyau, wanda ya shahara a kan birki. The non-uniformity of friction changes the distribution of brake pressure and increases the non-uniform wear of friction pairs. In addition, the friction heating of the braking process and the dust of the operating environment into the friction pair will cause the process of driving wear, which is thermal wear, abrasive wear, adhesive wear, fatigue wear and so on play a role at the same time, that is, wear is inevitable. Koyaya, adadin da saurin sutura za a iya sarrafa shi, saboda saurin sa ya dogara da lamba da kuma yawan amfani, ƙarfin amfani da, amfani da yanayin amfani.