ABMA 15242-3-2012 Rolling bearings - Measuring methods for vibration - Part 3 Radial spherical and tapered roller bearings with cylindrical bore and outside surface.pdf

1、 Rolling bearings - Measuring methods for vibration - - Part 3: Radial spherical and tapered roller bearings with cylindrical bore and outside surface ANSI/ABMA/ISO 15242-3-2012 Sponsor American Bearing Manufacturers Association ANSI/ABMA/ISO 15242-3-2012 (Identical Adoption of ISO 15242-3:2006) Cop

2、yright American Bearing Manufacturers Association, Inc. Neither part of the printed publication, nor any part of the electronic tile may be reproduced or transmitted in any form, including transmittal by e-mail, by file transfer protocol (FTP), or by being made part of a network-accessible system, w

3、ithout the prior written permission of the copyright owner. ABMA FOREWORD (This foreword is not part of ANSI/ABMA/ISO 15242-3-2012.) IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of developing Internation

4、al Standards is carried out through IS0 technical committees. Every member body interested in a subject for which a technical committee has been authorized has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also tak

5、e part in the work. The text is approved as an International Standard if a two-thirds majority of the P (participating)-members of the TC/SC are in favor and not more than one-quarter of the total number of votes cast are negative. International Standard 15242-3-2006 was prepared by Technical Commit

6、tee ISO/TC 4, Rolling Bearings / Subcommittee 4, Tolerances, tolerance definitions and symbols (including GPS). This standard was processed and approved for submittal to ANSI for national adoption by Accredited Standards Committee B3. Committee approval of the national adoption of this standard does

7、 not necessarily mean that all committee members voted for its adoption. Suggestions for the improvement of this standard gained through experience with its use will be welcomed. These suggestions should be sent to: ASC B3 Secretariat American Bearing Manufacturers Association 2025 M Street, N.W., S

8、uite 800 Washington, DC 20036 Title:From AutoCAD Drawing “Logo0002“Creator:TeXMathEditor participial utilitiesPreview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.Reference number ISO 15242-3

9、:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 15242-3 First edition 2006-01-15 Rolling bearings Measuring methods for vibration Part 3: Radial spherical and tapered roller bearings with cylindrical bore and outside surface Roulements Mthodes de mesurage des vibrations Partie 3: Roulements rotule sur

10、rouleaux et rouleaux coniques, alsage et surface extrieure cylindriques ISO 15242-3:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are

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13、ing to it is found, please inform the Central Secretariat at the address given below. ISO 2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, witho

14、ut permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2006 All righ

15、ts reserved ISO 15242-3:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv Introduction . v 1 Scope 1 2 Normative references 1 3 Terms and definitions . 1 4 Measurement process. 2 4.1 Speed of rotation . 2 4.2 Bearing axial load 2 5 Measurement and evaluation methods . 2 5.1 Physical

16、 quantity measured . 2 5.2 Frequency range 2 5.3 Peak measurement 3 5.4 Testing sequence 3 6 Conditions for measurement . 3 6.1 Bearing conditions for measurement 3 6.2 Conditions of the test environment . 4 6.3 Conditions for the test device 4 6.4 Requirements for the operator . 6 Annex A (normativ

17、e) Measurement of external axial loading alignment 7 ISO 15242-3:2006(E) iv ISO 2006 All rights reserved 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 norm

18、ally 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 t

19、he 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

20、 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

21、 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 15242-3 was prepared by Technical Committee ISO/TC 4, Rolling bearings. ISO 15242 consists of the following parts, under the general title Rolli

22、ng bearings Measuring methods for vibration: Part 1: Fundamentals Part 2: Radial ball bearings with cylindrical bore and outside surface Part 3: Radial spherical and tapered roller bearings with cylindrical bore and outside surface Part 4: Radial cylindrical roller bearings with cylindrical bore and

23、 outside surface ISO 15242-3:2006(E) ISO 2006 All rights reserved v Introduction Vibration of rotating rolling bearings is a complex physical phenomenon dependent on the conditions of operation. Measuring the vibration output of an individual bearing under a certain set of conditions does not necess

24、arily characterize the vibration output under a different set of conditions or when the bearing becomes part of a larger assembly. Assessment of the audible sound generated by the mechanical system incorporating the bearing is complicated further by the influence of the interface conditions, the loc

25、ation and orientation of the sensing device, and the acoustical environment in which the system operates. Assessment of airborne noise, which for the purpose of this document can be defined as any disagreeable and undesired sound, is further complicated by the subjective nature of the terms “disagre

26、eable“ and “undesired“. Structure-borne vibration can be considered the driving mechanism that ultimately results in the generation of airborne noise. Only selected methods for the measurement of the structure-borne vibration of rotating rolling bearings are addressed in this part of ISO 15242. Vibr

27、ation of rotating rolling bearings can be assessed by any of a number of means using various types of transducers and test conditions. No simple set of values characterizing vibration of a bearing is adequate for the evaluation of the vibratory performance in all possible applications. Ultimately, a

28、 knowledge of the type of bearing, its application and the purpose of the vibration testing (e.g. as a manufacturing process diagnostic or an assessment of the product quality) is required to select the most suitable method for testing. The field of application for standards on bearing vibration is,

29、 therefore, not universal. However, certain methods have established a wide enough level of application to be considered as standard methods for the purposes of this part of ISO 15242. This part of ISO 15242 serves to define the detailed method for assessing vibration of radial spherical and tapered

30、 roller bearings with cylindrical bore and outside surface on a test rig. INTERNATIONAL STANDARD ISO 15242-3:2006(E) ISO 2006 All rights reserved 1 Rolling bearings Measuring methods for vibration Part 3: Radial spherical and tapered roller bearings with cylindrical bore and outside surface 1 Scope

31、This part of ISO 15242 specifies vibration measuring methods for double-row radial spherical roller bearings and single-row and double-row radial tapered roller bearings, with a contact angle up to and including 45, under established test conditions. It covers double-row radial spherical roller bear

32、ings as well as single-row and double-row radial tapered roller bearings with cylindrical bore and outside surface. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refe

33、rences, the latest edition of the reference document (including any amendments) applies. ISO 286-2, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 554, Standard atmospheres for conditioning and/or testing Specifications ISO 558

34、, Conditioning and testing Standard atmospheres Definitions ISO 1132-1, Rolling bearings Tolerances Part 1: Terms and definitions ISO 2041, Vibration and shock Vocabulary ISO 3205, Preferred test temperatures ISO 3448, Industrial liquid lubricants ISO viscosity classification ISO 5593, Rolling beari

35、ngs Vocabulary ISO 15242-1:2004, Rolling bearings Measuring methods for vibration Part 1: Fundamentals 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 1132-1, ISO 2041, ISO 5593 and ISO 15242-1 apply. ISO 15242-3:2006(E) 2 ISO 2006 All rights reserve

36、d 4 Measurement process 4.1 Speed of rotation The default speed of rotation shall be 15 s1 (900 r/min), with a tolerance of 12 %. Other speeds and tolerances may be used by agreement between the manufacturer and the customer; e.g. it may be necessary to use a higher speed for bearings in the smaller

37、 size range 20 s1 to 30 s1 (1 200 r/min to 1 800 r/min) in order to obtain an adequate vibration signal. Conversely, it may be necessary to use a lower speed for bearings in the larger size range 7,5 s1 to 10 s1 (450 r/min to 600 r/min) to avoid possible roller, rib and raceway damage. 4.2 Bearing a

38、xial load The bearing load shall be in the axial direction with default values as specified in Table 1. Table 1 Default values for bearing axial load Bearing outside diameter D Double-row radial spherical roller bearings Single-row and double-row radial tapered roller bearings Contact angle u 23 Con

39、tact angle 23 u 45 Default values for bearing axial load u min. max. min. max. min. max. mm N N N 30 50 45 55 90 110 180 220 50 70 90 110 180 220 360 440 70 100 180 220 360 440 720 880 100 140 360 440 720 880 1 080 1 320 140 170 540 660 1 080 1 320 1 440 1 760 170 200 720 880 1 440 1 760 1 800 2 200

40、 Other axial loads and tolerances may be used by agreement between the manufacturer and the customer; e.g. depending on bearing design and lubricant used, it may be necessary to use a higher load to prevent roller/raceway slip, or a lower load to avoid possible roller, rib and raceway damage. 5 Meas

41、urement and evaluation methods 5.1 Physical quantity measured The default physical quantity to be measured is vibration velocity, r.m.s. (m/s), in the radial direction. 5.2 Frequency range The velocity signal shall be measured in one or more bands with default frequency ranges as specified in Table

42、2. ISO 15242-3:2006(E) ISO 2006 All rights reserved 3 Table 2 Default frequency ranges Speed of rotation Low band (L) a Medium band (M) a High band (H) a Default frequencies min. max. flow fhigh flow fhigh flow fhigh r/min Hz Hz Hz 882 909 50 150 150 900 900 5 000 a For rotational speeds other than

43、the nominal 900 r/min, the frequency range should be adjusted in proportion to the speed. For practical reasons, frequencies lower than 50 Hz or higher than 10 000 Hz should not be used, unless agreed upon between the manufacturer and the customer. NOTE Other frequency ranges may be considered by ag

44、reement between the manufacturer and the customer in those instances where specific ranges have greater importance to successful operation of the bearing. The use of spectral analysis of the vibration signal is an alternative. 5.3 Peak measurement Detection of peaks or spikes in the time domain velo

45、city signal, usually due to surface defects and/or contamination in the test bearing, may be considered as a supplementary option by agreement between the manufacturer and the customer. Various evaluation methods exist depending on the bearing type and the application. 5.4 Testing sequence Double-ro

46、w radial spherical and tapered roller bearings shall be tested with the axial load applied from one side of the outer ring and the test repeated with the axial load on the other side of the outer ring. Single-row radial tapered roller bearings shall be tested in their axial load acceptance direction

47、 only. For diagnostic purposes, performing multiple measurements with the outer ring in different angular positions relative to the pick-up is appropriate. For acceptance of the bearing, the highest vibration reading for the appropriate frequency range shall be within the limits mutually agreed betw

48、een the manufacturer and the customer. For test duration see ISO 15242-1:2004, 6.5. 6 Conditions for measurement 6.1 Bearing conditions for measurement 6.1.1 Prelubrication Prelubricated (greased, oiled or solid lubricated) bearings, including sealed and shielded types, shall be tested in the as-del

49、ivered condition. NOTE Some greases, oils and solid lubricants increase or decrease bearing vibration levels in comparison with the reference conditions in 6.1.2 and 6.1.3. The following reference condition procedures (6.1.2 and 6.1.3) normally apply for bearings that are not prelubricated. However, they may also be used in cases of dispute regarding the source of unacceptable vibration levels. ISO 15242-3:2006(E) 4 ISO 2006 All rights reserved 6.1.2 Cleanliness of the