ISO 3547-6:2020

Plain bearings - Wrapped bushes - Part 6: Checking the inside diameter

The document specifies, following ISO 12301, the checking of the inside diameter of wrapped bushes (see ISO 3547‑2:2017, method C) and describes the necessary checking methods and measuring equipment. NOTE 1 All dimensions in this document are given in millimetres except where otherwise noted/designated. NOTE 2 The dimensions and tolerances of wrapped bushes are given in ISO 3547‑1. NOTE 3 Checking of the wall thickness is the subject of ISO 3547‑7. NOTE 4 Checking of the outside diameter of wrapped bushes is the subject of ISO 3547‑5.

titre manque — Partie 6: titre manque

Drsni ležaji - Zvite puše - 6. del: Kontrola notranjega premera

General Information

• Status: Published
• Publication Date: 06-May-2020
• ICS: 21.100.10 - Plain bearings
• Technical Committee: ISO/TC 123/SC 5 - Quality analysis and assurance
• Drafting Committee: ISO/TC 123/SC 5 - Quality analysis and assurance
• Current Stage: 9092 - International Standard to be revised
• Start Date: 03-Nov-2025
• Completion Date: 13-Dec-2025
• Ref Project: SIST ISO 3547-6:2020 - Plain bearings - Wrapped bushes - Part 6: Checking the inside diameter

Relations

• Revises: ISO 3547-6:2007 - Plain bearings - Wrapped bushes - Part 6: Checking the inside diameter
• Effective Date: 28-Apr-2018

Overview

ISO 3547-6:2020 - Plain bearings - Wrapped bushes - Part 6: Checking the inside diameter - specifies accepted methods and measuring equipment for checking the inside diameter of wrapped bushes. Following ISO 12301 and referring to ISO 3547-2 (method C), this standard explains how to transform a flexible free bush into a measurable condition (by pressing it into a ring gauge) and how to determine the inside diameter using mechanical gauges or measuring instruments. All dimensions are given in millimetres unless otherwise noted.

Key topics and requirements

• Purpose: Because wrapped bushes are flexible, the free diameter is not measured directly; the bush is pressed into a ring gauge whose nominal diameter corresponds to the housing bore (typically H7 tolerance).
• Measuring methods:
  • Three-point measuring instrument (radial measurement using spherical pin faces).
  • GO / NO-GO plug gauges: GO plug should insert with minimum effort; NO-GO must not insert under a maximum force (standard default 250 N, but the limit may be agreed between supplier and user).
  • Alternative methods (subject to correlation): cylindrical gauges, dial gauges, optical devices.
• Test equipment:
  • Ring gauge and plug gauge dimensions and wear limits specified (see standard tables).
  • Gauges must be made from hardened, non-ageing steel (60–64 HRC).
• Measurement considerations and error sources:
  • Damage/wear to ring or plug gauges, lack of lead-in chamfer, misalignment during insertion, insufficient ring width, contaminants (grease, burrs), and swelling of parts.
• Agreement between supplier and user:
  • Decide whether results are recorded by measuring or by gauging, and agree on any force limits, special dimensions (for D > 180 mm), or deviations from default gauges.

Applications and users

Who uses ISO 3547-6:2020:

• Quality engineers and inspection technicians in bearing and bush manufacturing.
• Metrology and QA teams in automotive, industrial machinery, hydraulic and pivot applications where wrapped bushes are used.
• Suppliers and purchasers negotiating inspection protocols and acceptance criteria.

Practical benefits:

• Ensures consistent, reproducible inside-diameter checks across suppliers and users.
• Reduces measurement disputes by defining gauges, wear limits and common error sources.
• Integrates with plant quality-control procedures (ISO 12301) for geometrical inspection.

Related standards

• ISO 3547-1:2018 - Dimensions of wrapped bushes
• ISO 3547-2:2017 - Test data for outside and inside diameters (method C referenced)
• ISO 3547-5 - Checking the outside diameter
• ISO 3547-7 - Measurement of wall thickness of thin-walled bushes
• ISO 12301 - Quality control techniques for plain bearings

Keywords: ISO 3547-6:2020, plain bearings, wrapped bushes, inside diameter checking, ring gauge, plug gauge, three-point measuring instrument, GO NO-GO, H7 tolerance, inspection procedure.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 3547-6
Second edition
2020-05
Plain bearings — Wrapped bushes —
Part 6:
Checking the inside diameter
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units . 1
5 Method of checking . 2
6 Test equipment. 2
6.1 Ring gauge . 2
6.2 Plug gauge . 3
6.3 Three-point measuring instrument . 4
6.4 Requirements for measuring equipment . 5
6.5 Measuring errors. 5
7 Procedure. 5
Bibliography . 6
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.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 123, Plain bearings, Subcommittee SC 5,
Quality analysis and assurance.
This second edition cancels and replaces the first edition (ISO 3547-6:2007), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— Clause 2 has been updated;
— Figures 1, 2 and 3 have been updated;
— Clause 3 (Terms and definitions) has been added;
— Figure 4 has been implemented;
— Clauses 5 and 6 have been updated.
A list of all parts in the ISO 3547 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved

Introduction
Wrapped bushes in the free condition are flexible, but
...

SLOVENSKI STANDARD
01-november-2020
Drsni ležaji - Zvite puše - 6. del: Kontrola notranjega premera
Plain bearings - Wrapped bushes - Part 6: Checking the inside diameter
Ta slovenski standard je istoveten z: ISO 3547-6:2020
ICS:
21.100.10 Drsni ležaji Plain bearings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 3547-6
Second edition
2020-05
Plain bearings — Wrapped bushes —
Part 6:
Checking the inside diameter
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units . 1
5 Method of checking . 2
6 Test equipment. 2
6.1 Ring gauge . 2
6.2 Plug gauge . 3
6.3 Three-point measuring instrument . 4
6.4 Requirements for measuring equipment . 5
6.5 Measuring errors. 5
7 Procedure. 5
Bibliography . 6
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.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 123, Plain bearings, Subcommittee SC 5,
Quality analysis and assurance.
This second edition cancels and replaces the first edition (ISO 3547-6:2007), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— Clause 2 has been updated;
— Figures 1, 2 and 3 have been updated;
— Clause 3 (Terms and definitions) has been added;
— Figure 4 has been implemented;
— Clauses 5 and 6 have been updated.
A list of all parts in the ISO 3547 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s natio
...