WVA numbers (Waren-Vertriebs-Artikel-Nummern) are a reference and assignment system for brake linings,

clutch A clutch is a mechanical device that engages and disengages power transmission, especially from a drive shaft to a driven shaft. In the simplest application, clutches connect and disconnect two rotating shafts (drive shafts or line shafts). ...

facings,

brake shoe A brake shoe is the part of a braking system which carries the brake lining in the drum brakes used on automobiles, or the brake block in train brakes and bicycle brakes. A device that is put on a track to slow down railroad cars is also call ...

s and other

friction Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: *Dry friction is a force that opposes the relative lateral motion of ...

materials which will especially be used in road

vehicle A vehicle (from la, vehiculum) is a machine that transports people or cargo. Vehicles include wagons, bicycles, motor vehicles (motorcycles, cars, trucks, buses, mobility scooters for disabled people), railed vehicles (trains, trams), ...

s but also in mechanical engineering. The WVA numbering system has been developed by the "VRI-Verband der Reibbelagindustrie" (Federation of Friction Industry),

Cologne Cologne ( ; german: Köln ; ksh, Kölle ) is the largest city of the German western state of North Rhine-Westphalia (NRW) and the fourth-most populous city of Germany with 1.1 million inhabitants in the city proper and 3.6 millio ...

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwee ...

. The VRI is the German Federation of Friction Industry and a member of FEMFM - Federation of European Manufacturers of Friction Materials. Taking the dimensionally determined parameters of the friction materials into account the system assigns the differently dimensioned linings to the respective areas of application and use and accordingly offers a basis for the cooperation and for the exchange of information between manufacturers, distributors and customers.

Structure

WVA Numbers - Allocation Scheme: {, class="wikitable" ! Friction Lining Type ! WVA-Numbers , - , Drum Brake Linings - Cars , 10000 to 14999 , - , Drum Brake Linings - Commercial Vehicles , 15000 to 19999 , - , Disc Brake Pads - Cars , 20000 to 25999 , - , Shoe Assemblies , 26000 to 27999 , - , Disc Brake Pads - Commercial Vehicles , 28000 to 29999 , - , Clutch Facings , 30000 to 34999 , - , Friction Plates , 35000 to 37999

External links

VRI-Verband der Reibbelagindustrie e.V.

Federation of European Manufacturers of Friction Materials
Vehicle braking technologies