ISO 11007-1:2021 石油製品と潤滑剤—潤滑グリースの防錆特性の決定—パート1：動的湿潤条件 | 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, 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.

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This document was prepared by Technical Committee ISO/TC 28, Petroleum and related products, fuels and lubricants from natural or synthetic sources.

This first edition of ISO 11007-1, together with ISO/TS 11007-2, cancels and replaces ISO 11007:1997, which has been technically revised.

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

• the document has been divided in two parts: part 1 on dynamic wet conditions and part 2 specifying the method with water wash-out;
• other water types and user-specified solutions have been introduced to the test procedure.

A list of all parts in the ISO 11007 series can be found on the ISO website.

Introduction

ISO 6743-9 classifies greases according to their conditions of use. The complete designation of a grease comprises of the ISO sign, the letter L (lubricant, industrial oils and related products), the letter X for the grease family, four symbols related to the conditions of use, and the NLGI consistency number. The third symbol is related to the ability of the grease to ensure satisfactory lubrication in presence of water and provide an adequate corrosion protection level.

The symbol 3 is a combination of the rust protection level evaluated using this document and of the level of resistance to water contamination using the water washout test according to ISO 11009.

The purpose of this document is to prescribe a method for the evaluation of the corrosion protection properties of lubricating grease in dynamic wet conditions. This test method is commonly known as Emcor ¹ test in the industry.

Greases are specified in ISO 12924.

A rolling bearing grease may be not suitable to lubricate plain bearings or gears.

1 Scope

This document specifies a method for the determination of the rust prevention characteristics of lubricating grease under dynamic wet conditions.

This test method is used to assess the ability of a grease to prevent corrosion in rolling bearings operated in presence of water, synthetic sea water or any industrial aqueous pollutant.

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 1998-1 and the following apply.

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

Bibliography