ISO 3030:2022 転がり軸受—ラジアルニードルローラーおよびケージアセンブリ—境界寸法、幾何学的製品仕様（GPS）、および公差値 | ページ 2

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, 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, 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 4, Rolling bearings, Subcommittee SC 5, Needle, cylindrical and spherical roller bearings.

This fourth edition cancels and replaces the third edition (ISO 3030:2011), which has been technically revised.

The main changes compared to the previous edition are as follows:

• geometrical product specifications (GPS) have been implemented;
• an informative annex on functional gauging of radial needle roller and cage assembly has been added.

Introduction

This document is a machine element geometry standard as defined in the geometrical product specification system (GPS system) presented in the matrix model of ISO 14638 ^[9].

The fundamental rules of ISO/GPS given in ISO 8015 ^[5] apply to this document and the default decision rules given in ISO 14253-1 ^[7] apply to specifications made in accordance with this document, unless otherwise indicated.

The connection between functional requirements, measuring technique and measuring uncertainty is always intended to be considered. For measurement uncertainty, ISO 14253-2 ^[8] should be considered.

1 Scope

This document specifies the boundary dimensions for radial needle roller and cage assemblies.

In addition, this document gives the tolerances for the cage width and method of functional gauging of bore diameter of needle roller complement.

Informative values for the tolerances of shaft raceway, housing raceway and raceway widths are given in Annex A.

Functional gauging of radial needle roller and cage assembly is given in Annex B.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 1132-1, ISO 5593 and ISO 14405-1 apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography