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1、BRITISH STANDARD BS ISO 15241:2001 Rolling bearings Symbols for quantities ICS 01.075; 21.100.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 15241:2001 This Br
2、itish Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 6 June 2002 BSI 6 June 2002 ISBN 0 580 39784 X National foreword This British Standard reproduces verb
3、atim ISO 15241:2001 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee MCE/7, Rolling bearings, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.
4、 Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Elec
5、tronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to unders
6、tand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises
7、 a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 18, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: she
8、ffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 15241:2001(E) INTERNATIONAL STANDARD ISO 15241 First edition 2001-08-15 Rolling bearings Symbols for quantities Roulements Symboles relatifs aux grandeurs Licensed Copy: sheffieldun sheffiel
9、dun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15241:2001(E) DPF dlcsiremia ihTs PDF file mya ctnoain emdeddeb tyfepcaes. In acccnadroe with Aebods licnesign lopic,y this file may be pirntde ro ivwede tub slahl ton eb ideted lnuess teh tyfepacse which aer emdeddeb era li
10、cnesed to dna intslaled on teh computre freporming teh idetign. In wodlnidaogn this f,eli trapies accept tniereh teh sersnoptilibiy of ton nifrgnigni Asebod licsnegni ilopcy. ehT ISO tneClar Secteraairt accepts no lilibaity ni this .aera Aebod is a tedarmakr fo Aebod Stsyems Icntaropro.de teDails fo
11、 the sfotwera pcudorts sude to crtaee tihs PFD file can be fdnuo in the Glarene Info leratiev to the fil;e the Pc-FDaertion arapmteres were tpoimizde for pirtning. Evyre cera sah neeb taken to enseru taht teh file is suitlbae fro sue by ISO memreb idob.se In teh lnuikley etnev ttah a plborem leratig
12、n to it is f,dnuo lpsaee ifnrom teh tneClar Sceterairat at the sserdda givne lebwo. ISO 1002 All rhgits rsevre.de elnUss towrehise scepfidei, on trap of tihs cilbuptanoi mya eb cudorperde ro utzilide ni yna form ro yb yna snaem, eelctinorc ro mecinahcal, inclidugn tohpociypong dna micrfoilm, wittuoh
13、 repmissino in writing form eitreh ISO at teh erddass lebwo ro ISOs memreb ydob in the ctnuoyr of the rtseuqee.r ISO cirypothg fofice saCe tsopale 65 ? 1121-HC aveneG 20 leT. + 41 22 947 10 11 xaF + 14 22 947 90 74 E-mail cirypothgiso.ch eWb www.iso.ch Printed in Switzlredna ii ISO 1002 All irhgts s
14、eredevr Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15241:2001(E) ISO 1002 All rights rsedevreiii ContentsPage Foreword.iv 1Scope 1 2Normative references1 3Symbols for quantities1 4Classification of symbols for quantities .2 5Definit
15、ions of physical quantities 3 6Use of square brackets .3 7Presentation of symbols for physical quantities3 8Index16 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15241:2001(E) iv ISO 1002 All rights rsedevre Foreword ISO (the Internati
16、onal 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
17、 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 standa
18、rdization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. 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 leas
19、t 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 15241 was prepar
20、ed by Technical Committee ISO/TC 4, Rolling bearings. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARDISO 15241:2001(E) ISO 1002 All rights rsedevre1 Rolling bearings Symbols for quantities 1Scope This International Sta
21、ndard defines the presentation of symbols for physical quantities dimensions, dimensional tolerances, accuracy, load ratings, life, etc. in the field of rolling bearings. These symbols are primarily intended for use in ISO Standards and ISO documents relating to rolling bearings, but they are also s
22、uitable for use in other printed materials such as catalogues, drawings and pamphlets. 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments t
23、o, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of
24、 the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 31-0:1992, Quantities and units Part 0: General principles ISO 31-11:1992, Quantities and units Part 11: Mathematical signs and symbols for use in the physical scien
25、ces and technology ISO 281:1990/Amd. 2:2000, Rolling bearings Dynamic load ratings and rating life Amendment 2: Life modification factoraXYZ ISO 1132-1:2000, Rolling bearings Tolerances Part 1: Terms and definitions ISO 5593:1997, Rolling bearings Vocabulary 3Symbols for quantities 3.1Principles of
26、symbol system The following principles have been applied in this International Standard. ?Principles of the symbol system are generally in accordance with ISO 31-0 and ISO 31-11. ?Symbols for physical quantities used in the field of rolling bearings are defined as quantities in physics. Symbols for
27、dimensionless values such as coefficients, factors and parameters are thus also involved. Mathematical variables are also included, e.g. probability (n). ?Subscripts of subscripts should not be adopted; e.g. the subscript letters “dmp” ofVdmpshould be printed in the same point size. The formVdmpshou
28、ld not be used (see Figure 1). ?Superscripts should not be used. 1 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15241:2001(E) 2 ISO 1002 All rights rsedevre Figure 1 Principle of symbols 3.2Symbols The symbols for quantities are shown
29、 by basic symbols, which are single letters from the Latin or Greek alphabet, or basic symbols with subscripts, composed of one or more letters of the Latin alphabet or Arabic numerals. They are not followed by a full stop. 3.3Basic symbols Basic symbols represent physical quantities and may sometim
30、es represent different quantities. The typical basic symbols are shown in Table 1. 3.4Subscripts Subscripts appended to a basic symbol modify the basic physical quantity with respect to properties, feature, numbering, etc. The subscripts currently used are shown in Table 2. Subscripts representing p
31、hysical quantities have the same typography as the basic symbols (e.g.Vdmp, ?ds). 3.5Style of printing symbols Basic symbols are printed in italic (sloping) type with serifs. Subscripts representing physical quantities are printed in italic type with serifs. Subscripts representing numbers and other
32、 symbols are printed in roman (upright) type, e.g. e (with respect to outer ring), r (radial), d (with respect to bore). All subscript characters should be of the same point size. EXAMPLE 1In Vdmp(variation of mean bore diameter), subscript “d” represents “bore diameter” and is printed in italic typ
33、e. Subscripts “m” representing “mean” and “p” representing “in a single plane” are printed in roman type. The subscript characters have the same point size. EXAMPLE 2In Sd(perpendicularity of inner ring face with respect to the bore), “d” represents “per bore surface” and is printed in roman type. 4
34、Classification of symbols for quantities Symbols are classified as follows in Tables 3 to 10. ?Dimensions and features for bearings, rings and washers (Table 3). ?Dimensions and tolerances for bearings, rings and washers (Table 4). ?Running accuracy for bearings, rings and washers (Table 5). ?Dimens
35、ions and tolerances for subunits (Table 6). 2 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15241:2001(E) ISO 1002 All rights rsedevre3 ?Dimensions and tolerances for rolling elements (Table 7). ?Dimensions for shafts and housings (Tab
36、le 8). ?Bearing loads and load ratings (Table 9). ?Bearing life (Table 10). 5Definitions of physical quantities Definitions of physical quantities in this International Standard are in accordance with ISO 5593, ISO 1132-1 and other ISO International Standards concerning rolling bearings. 6Use of squ
37、are brackets When two closely-related quantities in the tables are defined by the same text, apart from a few words, the quantities and their descriptions are grouped in a single entry. The words to be substituted for those which precede them in order to obtain the different meanings are placed in s
38、quare brackets, i.e. “”. 7Presentation of symbols for physical quantities The symbols used in the field of rolling bearings are presented in Tables 1 to 10. 3 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15241:2001(E) 4 ISO 1002 All r
39、ights rsedevre Table 1 Basic symbols PropertyBasic symbolQuantity Awidth of housing widthB height of shaft washer width of outer ringC height of housing washer outside diameter diameter of outer ring or housing washer except diameter of raceway D diameter of bearing seat bore diameterd diameter of i
40、nner ring or shaft washer except diameter of raceway Ediameter of raceway for outer ring Fdiameter of raceway for inner ring Gdesignation of a screw thread eccentricityH centre height of housing Jcentre distance between bolt holes Llength of housing or roller llength of screw thread Ndimension of bo
41、lt hole chamfer dimensionr (groove) radius s(washer) thickness (assembled) width Dimension T height radial runoutK variation in thickness axial runoutS variation in thickness Vvariation of dimension Tolerance and running accuracy ?deviation from nominal dimension Cload rating Fbearing load Llife Peq
42、uivalent load Load and life Qload on rolling element Ginternal clearance inumber of rows of rolling elements Znumber of rolling elements per row Others ?contact angle or angle of taper 4 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15
43、241:2001(E) ISO 1002 All rights rsedevre5 Table 2 Subscripts (see 3.4) PropertySubscriptDefinition eeffective marithmetical mean maxmaximum limit minminimum limit pplane in which measurement is made ssingle or actual General 0static (zero) aaxialDirection rradial aassembled a, b, c, . . .identificat
44、ion symbol when there is more than one diameter applied to closely associated parts (e.g. shaft, housing, spacer, collar) ccage Dper outside diameter surface dper bore surface eouter ring or housing washer iinner ring or shaft washer wrolling element Part or feature 1, 2, 3, . . .identification numb
45、er when there is more than one diameter, width or height applied to primarily associated parts (e.g. aligning housing ring, aligning seat washer, locating snap ring, loose rib) aadjusted htime, hours mmodified nprobability of failure related to (100 n) % reliability 1090 % reliability (n= 10) Life 5
46、050 % reliability (n= 50) OthersLlot or gauge lot 5 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:42:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 15241:2001(E) 6 ISO 1002 All rights rsedevre Table 3 Dimensions and features for bearings, rings and washers Item No.SymbolQuantityRefere
47、nce No. ISO 5593 1.01Acentre height of aligning surface04.03.15 1.02adistance specifying the location of a bearing load centre 1.03bearing width04.03.04 1.04inner ring width04.04.05 1.05 B shaft washer height04.04.06 1.06axial dimension of inner ring ?shaft washer 1.07 B1,B2, . . . axial dimension o
48、f part primarily associated with an inner ring ?shaft washer 1.08bsnap ring groove width 1.09outer ring width04.04.05 1.10 C housing washer height04.04.06 1.11C1outer ring flange width04.03.09 1.12axial dimension of outer ring ?housing washer 1.13 C1,C2, . . . axial dimension of part primarily assoc
49、iated with an outer ring ?housing washer 1.14bearing outside diameter04.03.03 1.15outside diameter of outer ring ?housing washer 1.16 D outside diameter of thrust washer 1.17D1outside diameter of outer ring flange 1.18D1,D2, . . .outer ring ?housing washer diameter (except raceway diameter) 1.19bearing bore diameter04.03.02 1.20bore diameter of inner ring ?shaft washer 1.21 d bore diameter of thrust washer 1.22dGnominal diameter of screw thread (external or internal) 1.23dG1,dG2, . . .diameter o
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