kampas rem / break lining

Brake linings are composed of a relatively soft but tough and heat-resistant material with a high coefficient of dynamic friction ( and ideally an identical coefficient of static friction) typically mounted to a solid metal backing using high-temperature adhesives or rivets. The complete assembly ( including lining and backing) is then often called a brake pad or brake shoe. The dynamic friction coefficient " µ " for most standard brake pads is usually in the range of 0.35 to 0.42. This means that a force of 1000 Newtons ( or pounds) on the pad will give a resulting brake force close to 400 Newtons ( or pounds) . There are some racing pads that have a very high µ of 0.55 to 0.62 with excellent high temperature behaviour. These pads have high iron content and will usually outperform any other pad used with iron discs. Unfortunately nothing comes for free, and these high µ pads wear fast and also wear down the discs at a rather fast rate. However they are a very cost effective alternative to more exotic/ expensive materials. In this view of an automobile disc brake, the brake pad is the black material held by the red metal component ( the brake caliper) . The brake lining is that part of the brake pad which actually contacts the metal