1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 1: Boundary dimensions, tolerances and characteristics of metric series bearingsICS 21.100.20R
2、olling bearings Instrument precision bearings BRITISH STANDARDBS ISO 1224-1:2007BS ISO 1224-1:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007ISBN 978 0 580 55284 7Amendments issued since publicationAmd. No. Date Comm
3、entscontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard is the UK implementation of ISO 1224-1:2007. Together with BS ISO 1224-2:2007 it supersedes BS 3469:1985 which is wi
4、thdrawn. The UK participation in its preparation was entrusted to Technical Committee MCE/7, Rolling bearings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a Reference num
5、berISO 1224-1:2007(E)INTERNATIONAL STANDARD ISO1224-1First edition2007-06-15Rolling bearings Instrument precision bearings Part 1: Boundary dimensions, tolerances and characteristics of metric series bearings Roulements Roulements de prcision pour instruments Partie 1: Dimensions dencombrement, tolr
6、ances et caractristiques, sries mtriques BS ISO 1224-1:2007ii iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Symbols . 2 5 Characteristics 4 6 Bearing types 4 7 Boundary dimensions 5 8 Tolerances . 7 8.1 Tolerance class 5A . 7 8.2 Tolerance class 4A
7、. 8 9 Radial internal clearance . 9 10 Bore and outside diameter classification 9 11 Torque test conditions . 9 11.1 General. 9 11.2 Test conditions . 9 11.3 Correlation of test results on different types of test equipment . 10 12 Limitations of bearing yield rates . 10 BS ISO 1224-1:2007iv Foreword
8、 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
9、 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 elec
10、trotechnical 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
11、 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 iden
12、tifying any or all such patent rights. ISO 1224-1 was prepared by Technical Committee ISO/TC 4, Rolling bearings. This first edition of ISO 1224-1, together with ISO 1224-2, cancels and replaces ISO 1224:1984, which has been technically revised. ISO 1224 consists of the following parts, under the ge
13、neral title Rolling bearings Instrument precision bearings: Part 1: Boundary dimensions, tolerances and characteristics of metric series bearings Part 2: Boundary dimensions, tolerances and characteristics of inch series bearings BS ISO 1224-1:20071Rolling bearings Instrument precision bearings Part
14、 1: Boundary dimensions, tolerances and characteristics of metric series bearings 1 Scope This part of ISO 1224 specifies the characteristics that define instrument precision rolling bearings, metric series, their types, boundary dimensions, tolerances and internal clearance, classifications used fo
15、r selective assembly, torque definitions and test condition, and limitations of bearing yield rates. 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 references, the lat
16、est edition of the referenced document (including any amendments) applies. ISO 15, Rolling bearings Radial bearings Boundary dimensions, general plan ISO 582, Rolling bearings Chamfer dimensions Maximum values ISO 1132-1, Rolling bearings Tolerances Part 1: Terms and definitions ISO 5593:1997, Rolli
17、ng bearings Vocabulary ISO 15241, Rolling bearings Symbols for quantities 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 1132-1, ISO 5593 and the following apply. 3.1 perpendicularity of inner ring bore with respect to the face basically cylindrical
18、 surface total variation of the relative position, in a radial direction parallel with the plane tangential to the reference face of the inner ring, of points on the same generatrix of the bore at a distance from the side faces of the ring equal to 1,2 times the largest axial single chamfer dimensio
19、n 3.2 axial runout of outer ring flange back face of assembled bearing radial groove ball bearing difference between the largest and the smallest of the axial distances between the back face of the outer ring flange, in different angular positions of this ring, at a radial distance from the outer ri
20、ng axis equal to half the mean diameter of the flange back face, and a point in a fixed position relative to the inner ring NOTE For a measurement to be valid, the inner and outer ring raceways shall be in contact with all the balls. BS ISO 1224-1:20072 3.3 torque quality torque quality of an instru
21、ment ball bearing is a function of average and maximum torques NOTE Maximum torque is most frequently specified for slow speed (near zero) applications and for limited arcs of travel. Where considerable rotation is involved, average torque may be the criterion. 3.4 maximum torque maximum value of to
22、rque recorded during any test cycle 3.5 average torque arithmetic mean value of the torque readings obtained during the test cycle 3.6 test load specified axial load coincident with the axis of rotation of the bearing 4 Symbols For the purposes of this document, the symbols given in ISO 15241 and th
23、e following apply. The symbols (except those for tolerances) shown in Figure 1 and the values given in the Tables 1 to 6 denote nominal dimensions unless specified otherwise. B inner ring width C outer ring width C1outer ring flange width D outside diameter of bearing D1outside diameter of outer rin
24、g flange d bore diameter Kearadial runout of outer ring of assembled bearing Kiaradial runout of inner ring of assembled bearing r chamfer dimension (except where r1is applicable) rs minsmallest single chamfer dimension of r rs maxlargest single chamfer dimension of r r1chamfer dimension of front fa
25、ce of angular contact ball bearing inner and outer rings r1s minsmallest single chamfer dimension of r1SDperpendicularity of outer ring outside surface with respect to the face1)Sdperpendicularity of inner ring face with respect to the bore1)Sdrperpendicularity of inner ring bore with respect to the
26、 face1)BS ISO 1224-1:20073Seaaxial runout of outer ring of assembled bearing1)Sea1axial runout of outer ring flange back face of assembled bearing1)Siaaxial runout of inner ring of assembled bearing1)VBsvariation of inner ring width VCsvariation of outer ring width VC1svariation of outer ring flange
27、 width VDmpvariation of mean outside diameter VDspvariation of outside diameter in a single plane Vdmpvariation of mean bore diameter Vdspvariation of bore diameter in a single plane Bsdeviation of a single inner ring width Csdeviation of a single outer ring width C1sdeviation of a single outer ring
28、 flange width Dmpdeviation of mean outside diameter in a single plane Dsdeviation of a single outside diameter D1sdeviation of a single outside diameter of outer-ring flange dmpdeviation of mean bore diameter in a single plane dsdeviation of a single bore diameter 1) For angular contact ball bearing
29、s, the back face is the reference face. BS ISO 1224-1:20074 a) Single-row deep groove ball bearings b) Angular contact ball bearings aBroken corner. Figure 1 Instrument precision bearing 5 Characteristics Satisfactory performance of instrument precision bearings necessitates that they be produced to
30、 special tolerances, as given in Clause 8. In addition, these bearings shall be particularly free from foreign matter and meet one or more specific requirements in the following categories: a) low or uniform torque or both, either at starting or in rotation (this requirement does not apply to bearin
31、gs with seals); b) smooth running or vibration limitations; c) limitations of bearing yield rates. Due to the many specialized requirements that exist in instrument applications, specification of these categories should be established only after full agreement between the manufacturer and the custom
32、er. 6 Bearing types Single-row deep groove ball bearings meet the majority of the requirements and may be open or capped, with or without a flanged outer ring. However, for specific applications, angular contact ball bearings, non-separable or with separable inner ring, may be required. BS ISO 1224-
33、1:200757 Boundary dimensions Boundary dimensions for metric series instrument precision bearings are given in Table 1. Table 1 Metric series bearings Dimensions in millimetres Flanged bearings d D B and C rs minar1s minaD1C1Applicable types of bearing Dimension seriesb0,6 2 0,8 0,05 0,05 open 17 1 2
34、,5 1 0,05 0,05 open 17 1 3 1 0,05 0,05 3,8 0,3 open 18 1 3 1,5 0,05 0,05 3,8 0,45 capped 38 1 4 1,6 0,1 0,05 5 0,5 open 19 1 4 2,3 0,1 0,05 5 0,6 capped 39 1,5 3 1 0,05 0,05 open 17 1,5 4 1,2 0,05 0,05 5 0,4 open 18 1,5 4 2 0,05 0,05 5 0,6 capped 38 1,5 5 2 0,15 0,08 6,5 0,6 open 19 1,5 5 2,6 0,15 0
35、,08 6,5 0,8 capped 39 2 4 1,2 0,05 0,05 open 17 2 5 1,5 0,08 0,05 6,1 0,5 open 18 2 5 2,3 0,08 0,05 6,1 0,6 capped 38 2 6 2,3 0,15 0,08 7,5 0,6 open, capped 19 2 6 3 0,15 0,08 7,5 0,8 capped 39 2,5 5 1,5 0,08 0,05 open 17 2,5 6 1,8 0,08 0,05 7,1 0,5 open 18 2,5 6 2,6 0,08 0,05 7,1 0,8 capped 38 2,5
36、7 2,5 0,15 0,08 8,5 0,7 open, capped 19 2,5 7 3,5 0,15 0,08 8,5 0,9 capped 39 3 6 2 0,08 0,05 open 17 3 7 2 0,1 0,05 8,1 0,5 open 18 3 7 3 0,1 0,05 8,1 0,8 capped 38 3 8 3 0,15 0,08 9,5 0,7 open, capped 19 3 8 4 0,15 0,08 9,5 0,9 capped 39 3 10 4 0,15 0,08 11,5 1 open, capped 02 4 7 2 0,08 0,05 open
37、 17 4 9 2,5 0,1 0,05 10,3 0,6 open 18 4 9 4 0,1 0,05 10,3 1 capped 38 4 11 4 0,15 0,08 12,5 1 open, capped 19 4 13 5 0,2 0,1 15 1 open, capped 0,2 BS ISO 1224-1:20076 Table 1 (continued) Dimensions in millimetres d D B and C rs minar1s minaFlanged bearings Applicable types of bearing Dimension serie
38、sb4 16 5 0,3 0,15 open, capped 03 5 8 2 0,08 0,05 open 17 5 11 3 0,15 0,08 12,5 0,8 open 18 5 11 5 0,15 0,08 12,5 1 capped 38 5 13 4 0,2 0,1 15 1 open, capped 19 5 16 5 0,3 0,15 18 1 open, capped 02 5 19 6 0,3 0,15 22 1,5 open, capped 03 6 10 2,5 0,1 0,05 open 17 6 13 3,5 0,15 0,08 15 1 open 18 6 13
39、 5 0,15 0,08 15 1,1 capped 28 6 15 5 0,2 0,1 17 1,2 open, capped 19 6 19 6 0,3 0,15 22 1,5 open, capped 02 7 11 2,5 0,1 0,05 open 17 7 14 3,5 0,15 0,08 16 1 open 18 7 14 5 0,15 0,08 16 1,1 capped 28 7 17 5 0,3 0,15 19 1,2 open, capped 19 7 19 6 0,3 0,15 22 1,5 open, capped 10 7 22 7 0,3 0,15 open, c
40、apped 02 8 12 2,5 0,1 0,05 open 17 8 16 4 0,2 0,1 18 1 open 18 8 16 6 0,2 0,1 18 1,3 capped 38 8 19 6 0,3 0,15 22 1,5 open, capped 19 8 22 7 0,3 0,15 open, capped 10 8 24 8 0,3 0,15 open 02 9 14 3 0,1 0,05 open 17 9 17 4 0,2 0,1 19 1 open 18 9 17 6 0,2 0,1 19 1,3 capped 38 9 20 6 0,3 0,15 open, capp
41、ed 19 9 24 7 0,3 0,15 open, capped 10 9 26 8 0,3 0,15 open, capped 02 10 15 3 0,1 0,05 open 17 10 19 5 0,3 0,15 21 1 open 18 10 19 7 0,3 0,15 21 1,5 capped 38 10 22 6 0,3 0,15 open, capped 19 10 26 8 0,3 0,15 open, capped 10 10 30 9 0,6 0,3 open, capped 02 aMaximum chamfer dimensions are given in IS
42、O 582. bDimension series quoted are those given in ISO 15 for bearings without flange. BS ISO 1224-1:200778 Tolerances 8.1 Tolerance class 5A See Tables 2 and 3. Table 2 Inner ring Tolerances values in micrometres d dmpdsVdspVdmpBsbVBsKiaSdrcSiam u high low high low max. max. high low max. max. max.
43、 max. 0,6 a10 0 5 0 5 3 3 0 25 5 3,5 7 7 aThis diameter is included in the group. bThe tolerance for the total width of the inner rings of a matched pair or a matched stack is 0 to 200 m times the number of bearings in the mounting. cPerpendicularity of inner ring face with respect to the bore (Sd)
44、is ( )ddr1 s max22,4SS d B r= where Sdris obtained from Table 2 and d1is the mean diameter of inner ring face. Table 3 Outer ring Tolerances values in micrometres D DmpDsVDspand VDmpCsb VCsKeaSDSeaSea1C1sVC1sD1smm open capped open capped u high low high low high low max. max. high low max. max. max.
45、 max. max. high low max. high low2 a18 0 5 0 5 +1 6 3 5 0 25 5 5 8 8 10 0 50 5 0 2518 30 0 6 0 6 +1 7 3 5 0 25 5 6 8 8 10 0 50 5 0 25aThis diameter is included in the group. bThe tolerance for the total width of the outer rings of a matched pair or a matched stack is 0 to 200 m times the number of b
46、earings in the mounting. BS ISO 1224-1:20078 8.2 Tolerance class 4A See Tables 4 and 5. Table 4 Inner ring Tolerances values in micrometres d dmpdsVdspVdmpBsbVBsKiaSdrcSiam u high low high low max. max. high low max. max. max. max. 0,6 a10 0 5 0 5 2,5 2,5 0 25 2,5 2,5 3 3 aThis diameter is included
47、in the group. bThe tolerance for the total width of the inner rings of a matched pair or a matched stack is 0 to 200 m times the number of bearings in the mounting. cPerpendicularity of inner ring face with respect to the bore (Sd) is ( )ddr1 s max22,4SS d B r= where Sdris obtained from Table 4 and
48、d1is the mean diameter of inner ring face. Table 5 Outer ring Tolerances values in micrometres D DmpDsVDspand VDmpCsb VCsKeaSDSeaSea1C1sVC1sD1smm open capped open capped u high low high low high low max. max. high low max. max. max. max. max. high low max. high low2 a18 0 5 0 5 +1 6 2,5 5 0 25 2,5 3
49、,5 4 5 8 0 50 2,5 0 2518 30 0 5 0 5 +1 6 2,5 5 0 25 2,5 4 4 5 8 0 50 2,5 0 25aThis diameter is included in the group. bThe tolerance for the total width of the outer rings of a matched pair or a matched stack is 0 to 200 m times the number of bearings in the mounting. BS ISO 1224-1:200799 Radial internal clearance The rad
