scope:

This European Standard specifies the method to be followed to achieve a satisfactory design of bogie frame and includes design procedures, assessment methods, verification and manufacturing quality requirements. It is limited to the structural requirements of bogie frames including bolsters and axlebox housings. For the purpose of the standard, these terms are taken to include all functional attachments, e.g. damper brackets. The general scope and requirements of EN 13749 are unaltered by this revision. Changes were necessary to make the standard compatible with more recent Euronorms. Certain areas of the normative text had to be revised to make correct reference to the structural analysis and validation processes now specified in the new bogie and running gear standard EN 15827. Other new normative references are to EN 15085 and EN 15663. The other main changes that have been made concern the informative annexes and are summarized as follows: a) to comply with CEN rules, the symbols and units have been removed from the normative text and added as informative Annex A, as they apply only to the other informative annexes; b) the old informative Annex C has been removed and reference made to EN 15663, which now covers vehicle mass data; c) the informative Annex E has been re-written to present the structural analysis and acceptance process as specified in EN 15827; d) a number of errors in the example load case equations in informative Annex C have been corrected; e) the guidance on component loads in informative Annex D has been revised to better reflect present practice; f) the limitations of the example load case data in informative Annexes C, D, F and G have been given greater emphasis and it has been stressed that the loads should be used as presented only when it can be shown that they are applicable to the specific design.