ISO/TS 11007-2:2021 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2：水洗いによる方法 | ページ 2

Foreword

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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 ).

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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/TS 11007-2, together with ISO 11007-1, 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 11007-1 specifies a method for the evaluation of the corrosion protection properties of lubricating grease in the presence of non-flowing water; the test bearing is immersed partially in the test fluid.

In some industries (e.g. wet sections of paper mills, roll neck bearings of rolling mills) the bearings are submitted to flow of water, rolling emulsions, paper treatment liquors, etc. In case of seal damage of the bearings, the corrosion inhibitors present in the grease may be potentially washed out, hence impairing the corrosion protection properties.

This document describes a procedure using the flow of test fluid (wash-out) instead of the non-flow conditions described in ISO 11007-1^[1].

This test method is commonly known as Emcor ¹ test in the industry.

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

The precision of the method described in this document has not yet been determined by an interlaboratory study.

1 Scope

This document specifies a method for the determination of the rust prevention characteristics of lubricating grease in the presence of a flow of an aqueous test fluid.

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, under wash out conditions.

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