This European Standard defines the requirements for buffers with 105 mm, 110 mm and 150 mm stroke for vehicles or units which use buffers and screw coupling. It covers the functionality, interfaces and testing procedures, including pass fail criteria, for buffers. NOTE 1 Typically, buffers with a stroke of 105 mm are used on freight wagons and locomotives, buffers with a stroke of 110 mm are used on coaches and locomotives and buffers with a stroke of 150 mm are used on freight wagons. It defines the different categories of buffers, the space envelope, static and dynamic characteristics and energy absorption. It includes a calculation method to determine the minimum size of the buffer head to avoid override between buffers. It defines the static and dynamic characteristics of the elastic systems. It also defines the requirements for buffers with integrated crash elements (crashworthy buffers) for tank wagons for dangerous goods. The requirements of this European Standard also apply to buffers of locomotives and passenger coaches which need to meet the crashworthiness requirements of EN 15227 for normal service only. The properties for the energy absorbing function are defined in EN 15227 and the requirements specified in Clause 7 for tank wagons for dangerous goods are not applicable to the buffers of these locomotives and passenger coaches. Diagonal buffers are excluded from this European Standard. For the crashworthy buffers of locomotives, cab cars or passenger coaches according to EN 15227, and tank wagons for dangerous goods or buffers which form part of a combined system consisting of a special buffer and a deformation element, interchangeability with freight wagon buffers is not required, and therefore the requirements of 5.2 (Fixing on vehicle and interchangeability), 5.3 (Buffer dimensions) do not apply, those of 5.4 (Mechanical characteristics of buffers) and 5.6 (Marking) apply with restrictions. NOTE 2 For tank wagon subjected to dangerous goods regulation.
EN 15551:2017 Referenced Document
EN 10025-1:2004 Hot rolled products of structural steels - Part 1: General technical delivery conditions*， 2024-04-20 Update
EN 10025-2:2004 Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels*， 2024-04-20 Update
EN 10025-3:2004 Hot rolled products of structural steels - Part 3: Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels*， 2024-04-20 Update
EN 10025-4:2004 Hot rolled products of structural steels - Part 4: Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels*， 2024-04-20 Update
EN 10025-5:2004 Hot rolled products of structural steels - Part 5: Technical delivery conditions for structural steels with improved atmospheric corrosion resistance*， 2024-04-20 Update
EN 10025-6:2004 Hot rolled products of structural steels - Part 6: Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition (Incorporates Amendment A1: 2009)*， 2024-04-20 Update
EN 10083-1:2006 Steels for quenching and tempering - Part 1: General technical delivery conditions
EN 10083-2:2006 Steels for quenching and tempering - Part 2: Technical delivery conditions for non alloy steels
EN 10083-3:2006 Steels for quenching and tempering - Part 3: Technical delivery conditions for alloy steels
EN 10168:2004 Steel products - Inspection documents - List of information and description
EN 10204:2004 Metallic products - Types of inspection documents*， 2024-04-20 Update
EN 10243-1:1999 Steel die forgings - Tolerances on dimensions - Part 1: Drop and vertical press forgings
EN 10293:2015 Steel castings - Steel castings for general engineering uses
EN 12663-2:2010 Railway applications - Structural requirements of railway vehicle bodies - Part 2: Freight wagons
EN 1370:2011 Founding - Examination of surface condition*， 2024-04-20 Update
EN 13803-1:2010 Railway applications - Track - Track alignment design parameters - Track gauges 1435 mm and wider - Part 1: Plain line
EN 15085-1:2007 Railway applications - Welding of railway vehicles and components - Part 1: General (Incorporates Amendment A1: 2013)*， 2024-04-20 Update
EN 15085-3:2007 Railway applications - Welding of railway vehicles and components - Part 3: Design requirements*， 2024-04-20 Update
EN 15273-1:2013 Railway applications - Gauges - Part 1: General - Common rules for infrastructure and rolling stock (Incorporates Amendment A1: 2016)
EN 1563:2011 Founding - Spheroidal graphite cast irons*， 2024-04-20 Update
EN 15839:2012 Railway applications - Testing for the acceptance of running characteristics of railway vehicles - Freight wagons - Testing of running safety under longitudinal compressive forces (Incorporates Amendment A1: 2015)*， 2024-04-20 Update
EN ISO 148-1:2016 Metallic materials - Charpy pendulum impact test - Part 1: Test method
EN ISO 148-2:2016 Metallic materials - Charpy pendulum impact test - Part 2: Verification of testing machines (ISO 148-2:2016)
EN ISO 148-3:2016 Metallic materials - Charpy pendulum impact test - Part 3: Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum impact machines
EN ISO 868:2003 Plastics and ebonite - Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868:2003)
EN 15551:2017 history
2022EN 15551:2022 Railway applications - Railway rolling stock - Buffers
2017EN 15551:2017 Railway applications - Railway rolling stock - Buffers