1、BRITISH STANDARD AEROSPACE SERIES BS 3SP 89: 1983 ISO1002:1983 (Superseding BS2SP89) Specification for Characteristics, boundary dimensions, tolerances and static load ratings of airframe bearings ISO title: Rolling bearings Airframe bearings Characteristics, boundary dimensions, tolerances, static
2、load ratings UDC 629.7:621.822BS3SP89:1983 This British Standard, having been prepared under the directionof the Mechanical Engineering Standards Committee, was published underthe authority of the BoardofBSI and comes into effect on 30 November1983 BSI 01-2000 The following BSI references relate to
3、the work on this standard: Committee reference MEE/30 Draft for comment 81/80376DC ISBN 0580136388 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Mechanical Engineering Standards Committee (MEE/-) to Technical Committee MEE/30 upon whic
4、h the following bodies were represented: Ball and Roller Bearing Manufacturers Association Engineering Equipment and Materials Users Association Institution of Mechanical Engineers Institution of Production Engineers Machine Tool Industry Research Association Ministry of Defence National Coal Board
5、North East Coast Institution of Engineers and Shipbuilders Society of British Aerospace Companies Limited Amendments issued since publication Amd. No. Date of issue CommentsBS3SP89:1983 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword iii 1 Scope and field of a
6、pplication 1 2 References 1 3 Symbols 1 4 Essential characteristics 4 5 Seals and shields 4 6 Protection against corrosion 4 7 Boundary dimensions 5 8 Tolerances 5 9 Basic static radial load ratings 5 10 Dimensions and tolerances Tables 6 10.1 Index to tables 6 10.2 Dimension tables Metric series 6
7、10.3 Tolerance and radial clearance tables Metric series 9 10.4 Dimensions tables Inch series 10 10.5 Tolerances and radial clearance tables Inch series 16 Annex Permissible load 19 Figure 1 1 Figure 2 2 Figure 3 2 Figure 4 2 Figure 5 3 Figure 6 3 Table 1 Single row rigid ball bearings (Figure 1), s
8、ealed or shielded, diameter series 0 6 Table 2 Single row rigid ball bearings (Figure 1), sealed or shielded, diameter series 2 7 Table 3 Single row rigid ball bearings (Figure 2), sealed or shielded, diameter series 8 and 9 7 Table 4 Double row rigid ball bearings (Figure 1), sealed or shielded, di
9、ameter series 2 7 Table 5 Double row self-aligning ball bearings (Figure 1), sealed or shielded, diameter series 2 8 Table 6 Single row spherical roller bearings (Figure 1), sealed or shielded, diameter series 3 8 Table 7 Tolerances for ball and roller bearings 9 Table 8 Radial internal clearance Ri
10、gid ball bearings (dimensions inTable 1 to Table 4) 9 Table 9 Radial internal clearance Double row self-aligning ball bearings (dimensions inTable 5) 9 Table 10 Radial internal clearance Single row spherical roller bearings (dimensions inTable 6) 10 Table 11 Single row rigid ball bearings (Figure 1)
11、, sealed or shielded 10 Table 12 Single row rigid ball bearings (Figure 1), sealed 10 Table 13 Single row rigid ball bearings (Figure 1), torque tube type, extra light, sealed or shielded 11 Table 14 Single row rigid ball bearings (Figure 1), torque tube type, light, sealed or shielded 12BS3SP89:198
12、3 ii BSI 01-2000 Page Table 15 Double row rigid angular contact ball bearings (Figure 1), sealed 12 Table 16 Double row self-aligning ball bearings (Figure 1), sealed or shielded 13 Table 17 Single row spherical roller bearings (Figure 1), sealed 13 Table 18 Double row spherical roller bearings (Fig
13、ure 1), sealed 14 Table 19 Needle roller bearings (Figure 3), shielded 14 Table 20 Needle roller bearings, track-roller, yoke type (Figure 4), single row, shielded 15 Table 21 Needle roller bearings, track roller, yoke type (Figure 4), double row, shielded 15 Table 22 Tolerances for bearings 16 Tabl
14、e 23 Radial internal clearance Single and double row rigid ball bearings (dimensions inTable 11, Table 12 and Table 15) 16 Table 24 Radial internal clearance Single row rigid ball bearings, torque tube type (dimensions inTable 13 andTable 14) 17 Table 25 Radial internal clearance Double row self-ali
15、gning ball bearings (dimensions in Table 16) 17 Table 26 Radial internal clearance Single and double row spherical roller bearings (dimensions inTable 17 and Table 18) 17 Table 27 Radial internal clearance Needle roller bearings (dimensions inTable 19) 18 Table 28 Radial internal clearance Needle ro
16、ller bearings, track roller, yoke type, single and double row (dimensions in Table 20 andTable 21) 18 Table 29 Static acceptance load 19 Publications referred to Inside back coverBS3SP89:1983 BSI 01-2000 iii National foreword This British Standard, prepared under the direction of the Mechanical Engi
17、neering Standards Committee on behalf of the Aerospace Standards Committee, is supplementary to BS292 “Rolling bearings: ball bearings, cylindrical and spherical roller bearings” and relates to bearings for applications which require features not included in that standard. This second revision of th
18、e original1960 edition is identical with ISO1002:1983 “Rolling bearings Airframe bearings Characteristics, boundary dimensions, tolerances, static load ratings”, which was prepared by Technical Committee ISO/TC4, Rolling bearings, of the International Organization for Standardization (ISO) and in th
19、e development of which the United Kingdom played an active part. The standard is intended to achieve satisfactory and consistent functioning of bearings specifically designed for use in airframes, as distinct from those used in connection with power plants, auxiliary drives and instruments in aircra
20、ft. The airframe is defined as the general structure of the aircraft and includes its control surfaces and all flaps, and doors and their respective mechanisms. Airframe bearings are designed to be subjected under load to slow rotations or oscillations only. As compared with the previous edition of
21、this standard, the ISO coding for airframe bearings, which was given where applicable, is no longer included due to the withdrawal of the former ISO/R300. Nor is the formerAppendixA, which described a salt-mist test for corrosion-resisting bearings, included. If such a test is required, reference sh
22、ould now be made to BS3G100 “Specification for general requirements for equipment in aircraft”, Subsection3.8 “Salt mist”, which, in turn, refers to BS2011 “Basic environmental testing procedures”, Part2.1Kb “Test Kb. Salt mist”. Terminology and conventions. The text of the International Standard ha
23、s been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used as the decimal marker for metric dimensions. I
24、n British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. A British Standard does not purport to include all the necessary provisions
25、 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. Cross-references International Standards Corresponding British Standards ISO 15:1981 BS 6267:1982 Specification for
26、rolling bearings: boundary dimensions for radial bearings (Identical) ISO 76:1978 BS 5645:1978 Specification for rolling bearings Static load ratings (Identical) ISO 1132:1980 BS 6107: Rolling bearings: tolerances Part 1:1981 Glossary of terms (Identical) Summary of pages This document comprises a f
27、ront cover, an inside front cover, pages i to iv, pages1to 20, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.iv blankBS3SP89:1983 BSI 01-2000
28、 1 1 Scope and field of application This International Standard specifies characteristics, boundary dimensions, tolerances and static load ratings of rolling bearings, other than tapered roller bearings, used in airframes, as distinct from those used in connection with power plants, auxiliary drives
29、, accessories and instruments in aircraft. For the purposes of this International Standard, an airframe is defined as the general structure of an aircraft and includes its control surfaces, all flaps and doors and their respective mechanisms. Both metric and inch series bearings are included because
30、 of established usage in the aircraft industry. The bearings included in this International Standard are usually full complement bearings (no cage and full complement of rolling elements) with basically cylindrical bore and outside surface and are sealed or shielded. The bearings have an extended in
31、ner ring, except for those inTable 3. The bearings are normally supplied adequately charged with suitable grease, and the external surfaces of the bearings may be protected by the same grease. In view of the design requirements, it is generally not possible to select standard bearings from ISO15 for
32、 airframe applications, but for metric series bearings the boundary dimensions given in ISO15 have been used where possible. The fact that a bearing is not included in this International Standard does not exclude the possibility that it may be used to advantage in airframe applications. 2 References
33、 ISO 15, Rolling bearings Radial bearings Boundary dimensions General plan. ISO 76, Rolling bearings Static load ratings. ISO 1132, Rolling bearings Tolerances Definitions. 3 Symbols Figure 1 BS3SP89:1983 2 BSI 01-2000 Figure 2 Figure 3 Figure 4 BS3SP89:1983 BSI 01-2000 3 NOTEFigure 5 andFigure 6 ap
34、ply equally to chamfers denoted as r (shown) and as r 1 . Figure 5 Figure 6 d = bearing bore diameter, nominal % dmp = single plane mean bore diameter deviation % ds = deviation of a single bore diameter V dp = bore diameter variation in a single radial plane D = bearing outside diameter, nominal %
35、Dmp = single plane mean outside diameter deviation % Ds = deviation of a single outside diameter V Dp = outside diameter variation in a single radial plane C = outer ring width, nominal % Cs = deviation of a single width of the outer ring V Cs = outer ring width variation C 1 = nominal width of trac
36、k contact (cylindrical) C 1s = single width of track contact (cylindrical) B = inner ring width, nominal % Bs = deviation of a single width of the inner ring V Bs = inner ring width variationBS3SP89:1983 4 BSI 01-2000 NOTEDefinitions of tolerance terms are given in ISO1132. 4 Essential characteristi
37、cs The lubricant and seals shall be capable of withstanding temperatures in the range of 55 to +120 C without losing their effectiveness. NOTEThe operational conditions may necessitate wider extremes of temperature, in which case other greases and/or sealing materials may be required. Bearings shall
38、 be capable of withstanding repeated loads of variable intensity, normally without making a complete revolution. NOTEThe bearings are generally made with an extended inner ring in order to simplify bearing installation by making the addition of washers unnecessary. 5 Seals and shields Bearings inTab
39、le 1 toTable 6,Table 11,Table 13,Table 14 andTable 16 shall be sealed or shielded, bearings inTable 12,Table 15,Table 17 andTable 18 shall be sealed, and bearings inTable 19,Table 20 andTable 21 shall be shielded. NOTESealed bearings are bearings in which the rolling elements and raceways are enclos
40、ed by contact seals, i.e., seals fitted to one ring and extending to the other ring with which they make sliding contact. Shielded bearings are bearings in which the rolling elements and raceways are enclosed by shields fitted to one ring and extending towards the other ring with which they have a s
41、mall clearance. The choice of seals or shields is governed by the nature of the particular application since a sealed bearing gives improved protection at the expense of a friction torque increase. 6 Protection against corrosion For bearings inTable 1 toTable 6, whether made of conventional rolling
42、bearing steel or corrosion resisting steel, plating or coating shall be subject to agreement between the user and manufacturer. Bearings inTable 11 toTable 19, if made of conventional rolling bearing steel, shall have all external surfaces except the inner ring bore surface cadmium plated. If made f
43、rom corrosion resisting steel, plating shall be subject to agreement between the user and the manufacturer. Track rollers inTable 20 andTable 21, if made of conventional rolling bearing steel, shall have the external surface of the outer ring chromium plated, and all other external surfaces except t
44、he inner ring bore surface cadmium plated. If made from corrosion resisting steel, plating shall be subject to agreement between the user and the manufacturer. Where cadmium plating is specified, the thickness of the plating shall not be less than0,005mm(0.0002in) and not more than0,012mm (0.0005in)
45、. Where chromium plating is specified, the thickness of the plating shall not be less than0,012mm(0.0005in) and not more than0,025mm (0.0010in). r = outer ring radial and axial chamfer dimension (Nominal values are not given in this International Standard; only minimum (r smin ) and maximum (r smax
46、) are listed in tables.) r s = outer ring single chamfer dimension r 1 = inner ring radial and axial chamfer dimension (Nominal values are not given in this International Standard; only minimum (r 1smin ) and maximum (r 1smax ) are listed in tables.) r 1s = inner ring single chamfer dimension K ia =
47、 radial runout of assembled bearing inner ring K ea = radial runout of assembled bearing outer ring S ia = assembled bearing inner ring face runout with raceway (groove) = angular displacement permissible between inner and outer ring axes of a self-aligning bearing C or = basic static radial load ra
48、tingBS3SP89:1983 BSI 01-2000 5 7 Boundary dimensions The boundary dimensions of the bearings and track rollers are given inTable 1 toTable 6 (metric series) andTable 11 toTable 21 (inch series). NOTE 1The diameter series noted inTable 1 toTable 6 are in accordance with ISO15. NOTE 2The controlling d
49、imensions inTable 11 toTable 21 and controlling tolerances inTable 22 are the inch values. The contour of the corner shall be either a45 straight line, as shown inFigure 6, or curvilinear, as illustrated inFigure 5, for inch series bearings inTable 11 toTable 21. Metric series bearings in Table 1 toTable 6 shall have straight line chamfers as shown inFigure 6. 8 Tolerances The tolerances for boundary dimensions (except chamfer dimensions) and running accuracy a
