ISO 3547-2:2023

Plain bearings - Wrapped bushes - Part 2: Test data for outside and inside diameters

This document specifies the test data for outside and inside diameters of wrapped bushes made of mono and multi-layer bearing material for plain bearing applications. It also specifies test designations. Since the wall thickness of the bush is measured in the free condition, no special test data are required for this on the drawing (see ISO 3547‑5 and ISO 3547‑6). NOTE Depending on the manufacturing method, the back of the bushes can show isolated light depressions and, similarly, bushes with lubrication holes, grooves and bore indentations can show distortion. It is therefore suggested to measure the wall thickness away from these areas.

Paliers lisses — Bagues roulées — Partie 2: Données d'essai pour le diamètre extérieur et le diamètre intérieur

General Information

• Status: Published
• Publication Date: 19-Jun-2023
• ICS: 21.100.10 - Plain bearings
• Technical Committee: ISO/TC 123/SC 3 - Dimensions, tolerances and construction details
• Drafting Committee: ISO/TC 123/SC 3 - Dimensions, tolerances and construction details
• Current Stage: 6060 - International Standard published
• Start Date: 20-Jun-2023
• Due Date: 09-Jul-2024
• Completion Date: 20-Jun-2023

Relations

• Revises: ISO 3547-2:2017 - Plain bearings - Wrapped bushes - Part 2: Test data for outside and inside diameters
• Effective Date: 14-Jan-2023

Overview

ISO 3547-2:2023 - "Plain bearings - Wrapped bushes - Part 2: Test data for outside and inside diameters" defines required test data and test designations for measuring outside and inside diameters of wrapped bushes (mono- and multi-layer bearing materials) used in plain bearing applications. The standard specifies test methods, calculation bases (including elastic reduction and checking load), and rules for presenting measurement data on drawings. It clarifies that wall thickness is measured in the free (uninstalled) condition, so no special wall‑thickness test data are required on drawings.

Keywords: ISO 3547-2, plain bearings, wrapped bushes, outside diameter, inside diameter, test data, checking load, checking block, ring gauge

Key Topics and Requirements

• Scope and applicability
  • Applies to wrapped bushes made from mono- and multi-layer bearing materials.
  • Test A is applicable for outside diameters up to 180 mm.
• Tests defined
  • Test A - Check outside diameter with a checking block and setting plug; record indicator change Δz and compute D using elastic reduction v.
  • Test B - Check outside diameter using two ring gauges.
  • Test C - Check inside diameter of a bush pressed into a ring gauge.
  • Test D - Check outside diameter using a precision measuring tape.
• Elastic reduction (v)
  • Specified v values under checking load F by nominal D range:
    • D ≤ 6 mm: v = 0.003 mm

    • 6 ≤ 12 mm: v = 0.006 mm

    • 12 ≤ 80 mm: v = 0.013 mm

    • 80 ≤ 180 mm: v = 0.025 mm

  • Checking block diameter d_ch is calculated as d_ch = D_o,max − v.
• Checking load calculation
  • Based on effective cross-sectional area A_cal (depends on material designation and nominal dimensions).
  • Multipliers for F_ch (per Table 5): 1 500, 3 000, 6 000 or 12 000 N/mm depending on D_o range (rounded to nearest specified increment).
• Drawing requirements
  • Drawings should show either: outside diameter (D_o) + wall thickness (s), or outside diameter (D_o) + inside diameter (D_i). Do not specify wall thickness and inside diameter together.
• Measurement guidance
  • Measure wall thickness away from localized depressions, lubrication holes, grooves or bore indentations that can cause distortion.

Applications and Who Uses It

• Manufacturers and quality engineers of plain bearings and wrapped bushes use ISO 3547-2 to:
  • Define inspection procedures and test data for production and incoming inspection.
  • Calculate checking loads and select appropriate gauges and test rigs.
  • Prepare technical drawings with compliant measurement specifications.
• Design engineers, metrology labs, and procurement teams requiring consistent acceptance criteria for bush diameters will also rely on this standard.

Related Standards (applicable)

• ISO 3547-1: Dimensions
• ISO 3547-4: Materials
• ISO 3547-5 / ISO 3547-6: Test rig and wall-thickness guidance
• ISO 286-2, ISO 4378 series, ISO 12301, ISO 13715

Using ISO 3547-2 ensures consistent, repeatable diameter testing of wrapped bushes and helps integrate bearing components into robust quality and design workflows.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 3547-2
Fourth edition
2023-06
Plain bearings — Wrapped bushes —
Part 2:
Test data for outside and inside
diameters
Paliers lisses — Bagues roulées —
Partie 2: Données d'essai pour le diamètre extérieur et le diamètre
intérieur
Reference number
© ISO 2023
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]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units. 1
5 Presentation of data on drawing . 2
6 Tests . 3
6.1 Test A . 3
6.2 Test B . 3
6.3 Test C . 3
6.4 Test D . 4
7 Test A . 4
7.1 Description . 4
7.2 Calculation basis . 4
7.2.1 Elastic reduction, v, of outside diameter, D . 4
o
7.2.2 Calculation of diameter of checking block, d . 4
ch, 1
7.2.3 Effective cross-sectional area of the bush, A . 4
cal
7.2.4 Calculation of checking load, F . 5
ch
7.2.5 Limits for Δz . 6
7.3 Obtaining data — Example . . 6
7.4 Presentation of data on drawing — Example . 7
8 Test B . 7
8.1 Description . 7
8.2 Obtaining data — Example . 8
8.3 Presentation of data on drawing — Example . 8
9 Test C . 8
9.1 Description . 8
9.2 Obtaining data — Example . 9
9.3 Presentation of data on drawing — Example . 9
10 Test D .10
10.1 Description . 10
10.2 Obtaining data — Example . 10
10.3 Presentation of data on drawing — Example . 10
11 Designation of tests according to this document .11
Bibliography .12
iii
Foreword
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
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editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 123, Plain bearings, Subcommittee SC 3,
Dimensions, tolerances and construction details.
This fourth edition cancels and replaces the third edition (ISO 3547-2:2017), of which it constitutes a
minor revision. The changes are as follows:
— the units in Table 1 have been corrected;
— in 7.2.3, the correct term for A has been implemented.
cal
A list of all the 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
INTERNATIONAL STANDARD ISO 3547-2:2023(E)
Plain bearings — Wrapped bushes —
Part 2:
Test data for outside and inside diameters
1 Scope
This document specifies the test data for outside and inside diameters of wrapped bushes made of
mono and multi-layer bearing material for plain bearing applications. It also specifies test designations.
Since the wall thickness of the bush is measured in the free condition, no special test data are required
for this on the drawing (see ISO 3547-5 and ISO 3547-6).
NOTE Depending on the manufacturing method, the back of the bushes can show isolated light depressions
and, similarly, bushes with lubrication holes, grooves and bore indentations can show distortion. It is therefore
suggested to measure the wall thickness away from these areas.
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.
ISO 286-2, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes —
Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts
ISO 3547-1:2018, Plain bearings — Wrapped bushes — Part 1: Dimensions
ISO 3547-4, Plain bearings — Wrapped bushes — Part 4: Materials
ISO 4378-1, Plain bearings — Terms, definitions, classification and symbols — Part 1: Design, bearing
materials and their properties
ISO 4378-4, Plain bearings — Terms, definitions, classification and symbols — Part 4: Basic symbols
ISO 12301, Plain bearings — Quality control techniques and inspection of geometrical and material quality
characteristics
ISO 13715, Technical product documentation — Edges of undefined shape — Indication and dimensioning
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4378-1 and ISO 4378-4 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www. iso. org/o bp
— IEC Elec
...