Standard Number: BS EN 15551-2009
Title: Railway applications - Railway rolling stock - Buffers
Publication Date: 2009/4/30
Execute Date: 2009/4/30
Adopted International Standard: EN 15551-2009,IDT
Publisher: British Standards
Number of Pages:74P.;A4
Description: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 at the coupling interface with other interoperable rolling
stock. It covers the functionality, interfaces and testing procedures, including pass fail criteria, for buffers.
NOTE 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
It includes a calculation method to determine the minimum size of the buffer head to avoid override between
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 only according to RID.
The requirements of this European Standard also apply to locomotives and passenger coaches which have to
meet the crashworthiness requirements of EN 15227 for buffers in 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 according to RID are not applicable to locomotives and passenger coaches.
Diagonal buffers are excluded from this European Standard.
For vehicles which have to comply with crashworthiness requirements (locomotives, cab cars or passenger
coaches according to EN 15227, tank wagons according to RID), typically crashworthy buffers (buffers with a
deformable housing and/or the need for an opening in their mounting flange) or buffers which form part of a
combined system consisting of a special buffer (e.g. middle flange buffer) and a deformation element are
used. For these types of buffers, interoperability is possible, but 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
Cross References:EN 1369; EN 1370; EN 10025-2; EN 10204-2004; prEN 12663-2; EN 15085-5; EN 15227; EN ISO 868; ISO 868-2003; ISO 37; ISO 48; ISO 188; ISO 815-1; ISO 815-2; EN 1563; EN 10025; EN 10083; EN 10293; EN 12663; EN 15085-1; EN 15085-2; EN 15085-3; EN 15085-4; prEN 15839; EN ISO 9000; ISO 9000-2005; EN ISO 9001; ISO 9001-2000; NF F10-102-1998; DIN 17212-1972; PN-H-83160-1988; PN-H-84030-1989; UIC 526-1967; UIC 526-1-1998; UIC 526-3-1998; UIC 527-1-2005; UIC 528; UIC 535-2-2005; UIC 571-2-2001; UIC 573-2005; UIC 827-1-1990; UIC 827-2-1981; UIC 840-2-1981; 96/48/EC; 2004/50/EC; 2001/16/EC; 2004/50/EC
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Tile in English: Railway applications - Railway rolling stock - Buffers