ISO/DIS 3548-2

Plain bearings -- Thin-walled half bearings with or without flange

Paliers lisses -- Demi-coussinets minces à collerette ou sans collerette

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 3548-2
ISO/TC 123/SC 5 Secretariat: DIN
Voting begins on: Voting terminates on:
2016-02-18 2016-05-17
Plain bearings — Thin-walled half bearings with or
without flange —
Part 2:
Measurement of wall thickness and flange thickness
Paliers lisses — Demi-coussinets minces à collerette ou sans collerette —
Partie 2: Mesurage de l’épaisseur de paroi et de l’épaisseur de collerette
ICS: 21.100.10
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NATIONAL REGULATIONS.
ISO/DIS 3548-2:2016(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2016
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ISO/DIS 3548-2:2016(E)
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© ISO 2016, Published in Switzerland

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ii © ISO 2016 – All rights reserved
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ISO/DIS 3548-2:2016(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Definition ..................................................................................................................................................................................................................... 1

3.1 Wall thickness, s ...................................................................................................................................................................................

3 1

3.2 Measuring points [lines] ................................................................................................................................................................. 2

3.3 Tolerance ...................................................................................................................................................................................................... 2

3.4 Uncertainty of measurement ...................................................................................................................................................... 2

4 Symbols and units ............................................................................................................................................................................................... 2

5 Purpose of checking .......................................................................................................................................................................................... 2

6 Checking methods ............................................................................................................................................................................................... 2

6.1 Measuring principle ............................................................................................................................................................................ 2

6.2 Line measurement around the circumference ............................................................................................................ 3

6.3 Line measurement in axial direction ................................................................................................................................... 4

6.4 Point measurement ............................................................................................................................................................................. 5

6.5 Grading of bearings ............................................................................................................................................................................. 6

6.6 Eccentric bore .......................................................................................................................................................................................... 6

7 Requirements for measuring equipment and specimen for the contact method.............................6

7.1 Radius for measuring pin on the outside surface ..................................................................................................... 6

7.2 Radius for measuring pin on the inside surface ......................................................................................................... 7

7.3 Measuring pin load .............................................................................................................................................................................. 7

7.4 Set-up .............................................................................................................................................................................................................. 7

7.5 Periodical Control ................................................................................................................................................................................. 7

7.6 Failures on the inside and/or outside surface ............................................................................................................. 7

8 Checking of measuring equipment .................................................................................................................................................... 7

Bibliography ................................................................................................................................................................................................................................ 8

© ISO 2016 – All rights reserved iii
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ISO/DIS 3548-2:2016(E)
Foreword
This part of ISO 3548 replaces parts of ISO 12306 which has been cancelled.

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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International

Standards adopted by the technical committees are circulated to the member bodies for voting.

Publication as an International Standard requires approval by at least 75 % of the member bodies

casting a vote.

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.

ISO 3548-2 was prepared by Technical Committee ISO/TC 123, Plain Bearings, Subcommittee SC 5,

Quality analysis and assurance.

This second/third/... edition cancels and replaces the first/second/... edition (), [clause(s) / subclause(s)

/ table(s) / figure(s) / annex(es)] of which [has / have] been technically revised.

ISO 3548 consists of the following parts, under the general title Plain bearings — Thin-walled half

bearings with or without flange:
— Part 1: Tolerances, design and methods of test
— Part 2: Measurement of wall-thickness and flange thickness
— Part 3: Measurement of peripheral length
iv © ISO 2016 – All rights reserved
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DRAFT INTERNATIONAL STANDARD ISO/DIS 3548-2:2016(E)
Plain bearings — Thin-walled half bearings with or
without flange —
Part 2:
Measurement of wall thickness and flange thickness
1 Scope

This part of ISO 3548 specifies in accordance with ISO 12301 the checking of the wall-thickness of

thin-walled half bearings with or without flange and describes the necessary checking methods

and measuring equipment. This standard applies to a maximum bearing diameter of 150 mm. If this

standard should be applied to bigger diameter, an agreement between supplier and user is necessa

...