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  2. Brake lining - Wikipedia

    en.wikipedia.org/wiki/Brake_lining

    The brake lining is that part of the brake pad which actually contacts the metal brake disc (rotor) when the brake is engaged. Using a typical bicycle brake as an example, the backing would be the metal shell which provides mechanical support, and the lining would be the rubbery portion which contacts the rims when the brakes are applied.

  3. Brake pad - Wikipedia

    en.wikipedia.org/wiki/Brake_pad

    Brake pad material must also be porous to minimize the effect water has on the friction coefficient. [7] ... restriction in hydraulic system, brake pad lining(s ...

  4. Brake wear indicator - Wikipedia

    en.wikipedia.org/wiki/Brake_wear_indicator

    There are different types of wear indicators for brake pads: Ocular inspection: A groove in the pad material indicates the depth where it shall be replaced. Requires visual inspection of the pads. Acoustical: [3] [4] A metal part is designed to contact the brake disk causing a noise when the pad has worn down to the desired level.

  5. WVA number - Wikipedia

    en.wikipedia.org/wiki/WVA_number

    WVA numbers (Waren-Vertriebs-Artikel-Nummern) are a reference and assignment system for brake linings, clutch facings, brake shoes and other friction materials which will especially be used in road vehicles but also in mechanical engineering.

  6. Brake fade - Wikipedia

    en.wikipedia.org/wiki/Brake_fade

    Improved friction is provided by lining materials that have a higher coefficient of friction than standard brake pads, while brake fade is reduced through the use of more expensive binding resins with a higher melting point, along with slotted, drilled, or dimpled discs/rotors that reduce the gaseous boundary layer, in addition to providing ...

  7. ECE Regulation 90 - Wikipedia

    en.wikipedia.org/wiki/ECE_Regulation_90

    R90 calls for linings to be tested for speed sensitivity, cold performance, and replacement Brake pads and brake shoes are permitted to deviate from the frictional characteristics of their original-equipment counterparts by not more than 15%. [2] In addition, R90 requires tamper-evident, sealed packaging for replacement brake linings. [1]