GB/T 24611-2020Rolling bearings - Damage and failures - Terms, characteristics and causes (English PDF)

1 Scope

This standard classifies the failure modes of rolling bearings made of standard bearing steel in use: For each failure mode

The characteristics, appearance changes and possible root causes are defined and described, which helps to identify various failure modes based on appearance:

For this standard, the following terms are explained as follows:

---"Rolling bearing failure": The bearing cannot meet the predetermined design performance requirements or sign the end of its service life due to damage;

---"In use": The bearing leaves the manufacturing plant;

---"Visible features": Features that can be observed directly visually or with a magnifying glass or optical microscope, or from photos, but they can only

It is a feature obtained using a lossless method:

This standard only covers characteristic shapes that have a clear appearance and can be attributed to a specific reason with a high degree of certainty:

The formula and failure modes are considered, and the particularly important characteristics that reflect bearing changes and failures are described: Photos for various failure modes

And chart description, and gives the most common reasons:

If the root cause cannot be reliably determined through the inspection and the characteristic description of the visible characteristics given in this standard, then consideration should be given to

Conduct additional investigations: These methods are summarized in A:3 of Appendix A: For example, they may involve the use of destructive methods to obtain cross-sections:

Optical microscope or electron microscope for metallographic analysis and chemical and spectral analysis: These professional methods are beyond the standard range:

Generally, it is recommended to use the failure mode terminology given in the title of the article, and other suitable expressions or synonyms to describe its sub-modes

It is given and explained in A:4:

Examples of failures of rolling bearings, descriptions of failure causes, and suggested improvement measures are given in A:2:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

ISO 5593 rolling bearing vocabulary (Rolingbearings-Vocabulary)

3 Terms and definitions

The following terms and definitions defined in ISO 5593 apply to this document:

Note: The explanation of terms related to damage and failure is listed in A:4:

The website of the terminology database used in the standardization work maintained by ISO and IEC is as follows:

---ISO online browsing platform: https://www:iso:org/obp

---IEC Electrical Engineering Encyclopedia: http://www:electropedia:org/

3:1

Characteristics

The visible appearance produced by the use process:

Note: The types of surface defects and geometric changes are defined in ISO 8785 [3], and the part related to abrasive wear is defined in ISO 6601 [2]:

GB/T 24610.1 | GB/T 24610.2 | GB/T 24610.3 | GB/T 24608 | GB/T 24607 | […]