BS ISO 20056-2:2017
Current
The latest, up-to-date edition.
Rolling bearings. Load ratings for hybrid bearings with rolling elements made of ceramic Static load ratings
Hardcopy , PDF
English
11-01-2018
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Static load rating
6 Static equivalent load
7 Static safety factor
Annex A (informative) - Calculation of the Hertzian
parameters for point contact
Annex B (informative) - Guide values of the factor
f[0] for ball bearings
Annex C (informative) - Discontinuities in the
calculation of basic static load ratings
Annex D (informative) - Material properties and
material classification
Bibliography
Defines methods of calculating the static load ratings for hybrid bearings with bearing rings made of contemporary, commonly used, high quality hardened bearing steel, in accordance with good manufacturing practice, and a full set of rolling elements made of silicon nitride (Si[3]N[4]) in contemporary, commonly used material and manufacturing quality.
| Committee |
MCE/7
|
| DevelopmentNote |
Supersedes 17/30347196 DC. (01/2018)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This document specifies methods of calculating the static load ratings for hybrid bearings with bearing rings made of contemporary, commonly used, high quality hardened bearing steel, in accordance with good manufacturing practice, and a full set of rolling elements made of silicon nitride (Si3N4) in contemporary, commonly used material and manufacturing quality. For balls, ISO26602,[4] together with ISO3290‑2,[1] is applicable. For rollers, ISO12297‑2[2] is applicable, and ISO26602[4] is applicable in an analogous way.
For applications where hybrid bearings are used, guideline values of the static safety factor, S0, according to Table1 and Table2 are observed.
| Standards | Relationship |
| ISO 20056-2:2017 | Identical |
| ISO 5593:1997 | Rolling bearings Vocabulary |
| ISO/TR 10657:1991 | Explanatory notes on ISO 76 |
| ISO 3290-2:2014 | Rolling bearings Balls Part 2: Ceramic balls |
| ISO 76:2006 | Rolling bearings Static load ratings |
| ISO 26602:2017 | Fine ceramics (advanced ceramics, advanced technical ceramics) — Silicon nitride materials for rolling bearing balls and rollers |
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