DIN Standards Committee Railway
DIN 27205-5
State of railway vehicles - Brake - Part 5: Wheel mounted brake discs
Zustand der Eisenbahnfahrzeuge - Bremse - Teil 5: Radbremsscheiben
Overview
Wear, failures and other damage influence the operational safety of railway vehicles. Depending on the wear characteristics, application parameters and the current state of the railway vehicles and the cost effectiveness, a maintenance system shall be specified by which it is ensured that the necessary technical target state is maintained. All standards under the general title "State of railway vehicles" represent a uniform and system-compatible normative document which specifies the limit state for the safe operation and processes to maintain the target state of standard gauge railway vehicles. All documents under this general title are listed in DIN 27200, Supplement 2, which contains the document number and the titles of all standards under the general title "State of railway vehicles" which are notified according to the Communication from the Government of the Federal Republic of Germany to the Commission of the European Communities as national safety rules for the German railway system according to article 8, paragraph 2 of Directive 2004/49/EC of the European Parliament and of the Council of 29 April 2004 on safety on the Community's railways. The European Railway Agency (ERA) has included these standards in particular in the ERA guide for the member states about the notification of national safety rules. The standards of the DIN 27205 series "State of railway vehicles - Brake" consist of the following parts: - Part 1: Tread brake, mechanical part - Part 2: Disc brake, mechanical part - Part 3: Ventilated axle mounted brake discs - Part 4: Non ventilated axle mounted brake discs - Part 5: Wheel mounted brake discs - Part 6: Magnetic track brake - Part 7: Simple unfired pressure vessels - Part 8: Tightness and efficiency - Part 9: Function of driver's brake valve, control devices and indicators in driver's cabs - Part 10: Function of emergency brake equipment and emergency brake override - Part 11: Function and tightness of the brake for direct braking on powered traction unit and indirect braking on connected vehicles - Part 12: Function and tightness of railway vehicle brakes. The general scope of this document is specified in DIN 27200, clause 1 and clause 3.1. This standard applies to ventilated, cast and forged wheel mounted brake discs the faces of which are used as the friction surface; aluminium break discs and solid wheels are not covered. This document has been prepared by Subcommittee NA 087-00-15-05 UA "Bremse" ("Brake") of Working Committee NA 087-00-15 AA "Zustand der Eisenbahnfahrzeuge" ("State of railway vehicles") of the Railway Standardization Committee (FSF), in coordination with other working committees of the FSF and the German Commission for Electrical, Electronic and Information Technologies (DKE) and contains safety specifications. The content of DIN 27200, Supplement 2, corresponds to the Communication from the Government of the Federal Republic of Germany to the Commission of the European Communities of 25 January 2008. The most current Communication is valid.
