Common questions

What friction materials are used for brake linings?

What friction materials are used for brake linings?

Reinforcing fibers commonly used for brake friction materials are aramid fibers (or pulp), metallic, ceramic, glass, acrylic, carbon, and other natural fibers.

What is the recommended material for brake lining?

Rubber, glass, various types of resin and even Kevlar are in these brakes. Only a small amount of metal makes up this kind of lining. Non-asbestos linings are less durable than their counterparts. This kind of brake creates dust when in use but they are not considered pollutants.

What are brake linings made from?

Non-asbestos, also called organic, brake linings on today’s market are made of various safe and natural materials including rubber, resin, Kevlar, and glass. There is little metal in non-asbestos brake linings which makes them less durable but quieter than metallic linings.

What are friction material used in brakes and clutches?

It consists of a cotton or cellulose fiber and phenolic resin mixture, which is later bonded to a steel backing plate. Friction materials used for clutches and brakes are attached to more standard components made from cast iron and other similar materials.

Which is highly preferred material for brake and friction pads in disc brakes?

Types of friction materials Carbon composite material has been strengthened with carbon fiber. It is extremely thermally stable and lightweight. This material is often used for brake rotors and brake pads for aircraft and racing cars.

What affects brake friction?

The braking pressure affects the friction and wear through the size and deformation of actual contact area. According to modern tribology, the friction force depends on the size of actual contact area. The number and size of the contact point will increase with the increasing braking pressure.

What are important requirements for a brake lining?

Since the lining is the portion of the braking system which converts the vehicle’s kinetic energy into heat, the lining must be capable of surviving high temperatures without excessive wear (leading to frequent replacement) or outgassing (which causes brake fade, a decrease in the stopping power of the brake).

What is maximum disc run out?

The maximum amount of tolerance for brake disc runout is >0.08mm.

What is friction materials?

Friction materials are characterized for the type of binder used: phenolic resins (organic binders in general), metal sintered materials, and carbon–ceramic, and carbon–carbon materials.

What is the coefficient of friction dependent on?

2.1. Coefficient of friction (COF) is a dimensionless number that is defined as the ratio between friction force and normal force (Eqn (2.1)). Materials with COF smaller than 0.1 are considered lubricous materials. COF depends on the nature of the materials and surface roughness.

What is the minimum thickness for brake discs?

37 mm
Providing continuous cracks are not apparent, minimum brake disc thickness is 37 mm. Brake discs should be replaced in pairs. Brake pads should also be replaced when new brake discs are fitted. If this instruction is not adhered to, there is a danger that braking performance could be seriously reduced.