Search results
Results from the WOW.Com Content Network
The first asbestos brake linings were developed in 1908 by Herbert Frood. [1] Although Frood was the first to implement the use of asbestos brake linings, the heat dissipation properties of the fibres were tested by various scientists, including materials chemist Gwilym Price, who did most of his research and testing at Cambridge, United ...
However, as the serious health-related hazards of asbestos eventually started to become apparent, other materials had to be found. Asbestos brake pads have largely been replaced by non-asbestos organic (NAO) materials in first world countries. [9] Today, brake pad materials are classified into one of four principal categories, as follows:
Mac's Spring & Brake Service shop, with Raybestos brakes (ca. 1930-1945). In 1906, Raymond and Law invented the woven brake lining, an important innovation in automotive brakes. From 1919 to 1989 Raybestos brand was manufactured by Raymark Industries, Inc, of Stratford, Connecticut. Raymark Industries filed for Chapter 11 bankruptcy in 1998. [2]
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.
Natural amorphous and fine flake graphite are used in brake linings or brake shoes for heavier (nonautomotive) vehicles, and became important with the need to substitute for asbestos. This use has been important for quite some time, but nonasbestos organic (NAO) compositions are beginning to reduce graphite's market share.
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]
composite materials; asbestos replacement (e.g. brake linings) hot air filtration fabrics; tires, newly as Sulfron (sulfur-modified Twaron) mechanical rubber goods reinforcement; ropes and cables [16] V-belts (automotive, machinery, equipment, and more) wicks for fire dancing; optical fiber cable systems; sail cloth (not necessarily racing boat ...
Kevlar K-29 – in industrial applications, such as cables, asbestos replacement, tires, and brake linings. Kevlar K49 – high modulus used in cable and rope products. Kevlar K100 – colored version of Kevlar; Kevlar K119 – higher-elongation, flexible and more fatigue resistant; Kevlar K129 – higher tenacity for ballistic applications