ISO 6123-1:2015

INTERNATIONAL ISO
STANDARD 6123-1
Second edition
2015-08-15
Rubber or plastics covered rollers —
Specifications —
Part 1:
Requirements for hardness
Cylindres revêtus de caoutchouc ou de plastique — Spécifications —
Partie 1: Spécifications de dureté
Reference number
ISO 6123-1:2015(E)
©
ISO 2015

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ISO 6123-1:2015(E)

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© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved

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ISO 6123-1:2015(E)

Contents  Page
Foreword .iv
Introduction .v
1 Scope . 1
2  Normative references . 1
3  Specification of hardness . 1
4  Determination of hardness . 2
4.1 Methods . 2
4.1.1 IRHD hardness . 2
4.1.2 Shore hardness . 2
4.1.3 Pusey and Jones hardness . 2
4.2 Test conditions . 2
4.2.1 Test temperature . 2
4.2.2 Cover surface . 2
4.3 Procedure . 3
4.4 Expression of results . 3
5  Nominal hardness . 3
6  Tolerances on nominal hardness . 3
7  Hardness variation in a single roller . 4
8  Compliance with specifications . 5
© ISO 2015 – All rights reserved iii

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ISO 6123-1:2015(E)

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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee
SC 4, Products (other than hoses).
This second edition cancels and replaces the first edition (ISO 6123-1:1982), of which it constitutes a
minor revision, mainly to update the normative references.
ISO 6123 consists of the following parts, under the general title Rubber or plastics covered rollers —
Specifications:
— Part 1: Requirements for hardness
— Part 2: Surface characteristics
— Part 3: Dimensional tolerances
iv © ISO 2015 – All rights reserved

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ISO 6123-1:2015(E)

Introduction
Covered rollers are cylindrical cores, generally of metal, with a cover of rubber or plastics for a
particular use. They are manufactured in a wide variety of sizes and hardness grades depending on the
intended use.
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INTERNATIONAL STANDARD ISO 6123-1:2015(E)
Rubber or plastics covered rollers — Specifications —
Part 1:
Requirements for hardness
1 Scope
This part of ISO 6123 specifies requirements for the measured hardness of rubber or plastics covered
rollers.
2  Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest
...