Road vehicles -- Wheels -- Nut seat strength tests

ISO 15172:2005 specifies a test method to evaluate the strength of the nut seat of wheels intended for use on passenger cars, light trucks and multi-purpose vehicles. While this test ensures the minimum strength of the nut seat, the wheel must also have a degree of flexibility to allow torque retention. This test evaluates the axial strength of the nut seat. In addition, an informative annex provides recommended bearing area to ensure enough strength for the rotational force in tightening a nut against the nut seat.

Véhicules routiers -- Roues -- Essai de résistance des sièges d'écrou

General Information

Status
Published
Publication Date
03-Jul-2005
Current Stage
6060 - International Standard published
Start Date
27-May-2005
Completion Date
04-Jul-2005
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INTERNATIONAL ISO
STANDARD 15172
First edition
2005-07-01
Road vehicles — Wheels — Nut seat
strength tests
Véhicules routiers — Roues — Essai de résistance des sièges d'écrou
Reference number
ISO 15172:2005(E)
ISO 2005
---------------------- Page: 1 ----------------------
ISO 15172:2005(E)
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ii © ISO 2005 – All rights reserved
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ISO 15172:2005(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 15172 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 19, Wheels.

© ISO 2005 – All rights reserved iii
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INTERNATIONAL STANDARD ISO 15172:2005(E)
Road vehicles — Wheels — Nut seat strength tests
1 Scope

This International Standard specifies a test method to evaluate the strength of the nut seat of wheels intended

for use on passenger cars, light trucks and multi-purpose vehicles. While this test ensures the minimum

strength of the nut seat, the wheel must also have a degree of flexibility to allow torque retention. This test

evaluates the axial strength of the nut seat. In addition, the informative annex provides recommended bearing

area to ensure enough strength for the rotational force in tightening a nut against the nut seat.

2 Test procedures
2.1 General

The principle of this test is to apply an axial load to the nut seat and determine permanent deformation of the

nut seat. An additional test to measure yield strength is also specified.
2.2 Wheels for test

Use only fully processed wheels including all coatings representative of production parts intended for the

vehicle.
2.3 Test equipment

The test equipment shall be capable of supporting the complete wheel mounting area with a rigid flat surface

which is dimensionally representative of the vehicle hub (see Figure 1). The equipment shall provide a

hardened (R 45 min) punch or load applicator with a shape designed to match the seat face and the fastener

contact area representative of that specified for the wheel. The punch or load applicator shall provide a

...

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