BS ISO 13778:2017
Current
The latest, up-to-date edition.
Plain bearings. Quality assurance of thin-walled half bearings. Selective assembly of bearings to achieve a narrow clearance range
Hardcopy , PDF
English
25-04-2017
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Housing swell and thermal expansion
5 Measurement and identification
6 Suggested schemes for fitting
Describes the selective assembly of bearings (in accordance with ISO 3548-1).
| Committee |
MCE/12
|
| DevelopmentNote |
Supersedes 95/713930 DC. (08/2004) Supersedes 16/30335538 DC. (04/2017)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This document specifies the selective assembly of bearings (in accordance with ISO3548‑1).
The bearing diametral clearance is determined by the housing diameter, journal diameter and the wall thickness of the two half bearings. Typically, these components will have a total tolerance “stack up” of 50µm to 60µm. Current engine development and in particular, the desire for improved engine refinement, has provided a need to decrease the clearance range due to the tolerance “stack up”. This document suggests various schemes of selective assembly to achieve such ranges.
| Standards | Relationship |
| ISO 13778:2017 | Identical |
| ISO 3548-1:2014 | Plain bearings — Thin-walled half bearings with or without flange — Part 1: Tolerances, design features and methods of test |
| ISO 4378-1:2017 | Plain bearings — Terms, definitions, classification and symbols — Part 1: Design, bearing materials and their properties |
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