ISO 7299-2:2021

INTERNATIONAL ISO
STANDARD 7299-2
Second edition
Diesel engines — End-mounting
flanges for pumps —
Part 2:
High-pressure supply pumps for
common rail fuel injection systems
Moteurs diesels — Brides de montage des pompes —
Partie 2: Pompes d'alimentation à haute pression pour systèmes
d'injection de combustible à rampe commune
PROOF/ÉPREUVE
Reference number
ISO 7299-2:2021(E)
©
ISO 2021

---------------------- Page: 1 ----------------------
ISO 7299-2:2021(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2021 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 7299-2:2021(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions and tolerances . 1
4.1 General . 1
4.2 High-pressure supply pumps . 1
4.2.1 Type 1 end-mounting flange . 1
4.2.2 Type 2 end-mounting flange (with tang drive) . 2
4.2.3 Type 3 end-mounting flange . 3
4.2.4 Type 4 end-mounting flange . 3
4.2.5 Type 5 end-mounting flange (with tang drive) . 4
4.2.6 Type 6 end-mounting flange . 5
4.2.7 Type 7 end-mounting flange . 6
4.2.8 Type 8 end-mounting flange . 7
4.2.9 Type 9 end-mounting flange . 8
4.2.10 Type 10 end-mounting flange . 9
Bibliography .10
© ISO 2021 – All rights reserved PROOF/ÉPREUVE iii

---------------------- Page: 3 ----------------------
ISO 7299-2:2021(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 34,
Propulsion, powertrain and powertrain fluids.
This second edition cancels and replaces the first edition (ISO 7299-2:2009), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— three (3) further types of end-mounting flanges (types 8, 9 and 10) are added to the already existing
seven (7) types of end-mounting flanges (type 1 to type 7).
A list of all parts in the ISO 7299 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv PROOF/ÉPREUVE © ISO 2021 – All rights reserved

---------------------- Page: 4 ----------------------
ISO 7299-2:2021(E)

Introduction
Modern diesel engines for road vehicles have usually fuel injection systems based on the common
rail principle. Such systems have a high-pressure fuel supply pump to supply the rail with highly
pressurized
...