1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 21.100.10 ISBN 0-626-16226-2 SANS 11687-3:2005Edition 1ISO 11687-3:1995Edition 1SOUTH AFRICAN NATIONAL STANDARD Plain bearings Pedestal plain bearing
4、s Part 3: Centre flange bearings This national standard is the identical implementation of ISO 11687-3:1995 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 0
5、12 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 11687-3:2005 Edition 1 ISO 11687-3:1995 Edition 1 Table of changes Change No. Date Scope Abstract Specifies design characteristics for centre flange bearings for the size range 9 to 28, as well as d
6、esign characteristics for shafts. Keywords bearings, designation, dimensions, manufacturing requirements, material specifications, plain bearings, specifications. National foreword This South African standard was approved by National Committee StanSA TC 5120.02, Bearings, in accordance with procedur
7、es of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. INTERNATIONAL STANDARD ISO 11687-3 First edition 1995-02-01 Plain bearings - Pedestal plain bearings - Part 3: Centre flange bearings Paliers lisses - Paliers lisses a chaise sur Ie so/ - Partie 3: Paliers 2 bride cen
8、trale Reference number ISO 11687-3:1995(E) 60 11687=3:1995(E) 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 normally carried out through ISO technical comm
9、ittees. Esch 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
10、International Electrotechnical Commission (1 EC) on all matters of electrotechnical standardization. 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 me
11、mber bodies casting a vote. International Standard ISO 11687-3 was prepared by Technical Committee lSO/TC 123, Plain bearings, Subcommittee SC 3, Dimensions, tolerantes and cons truc tion de tails. ISO 11687 consists of the following Parts, under the general title Plain bearhgs - Pedestal plain bear
12、ings: - Part 7: Pillow blocks - Part 2: Side flange bearings - Part 3: Centre flange bearings 0 ISO 1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microf
13、ilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-l 211 Geneve 20 l Switzerland Printed in Switzerland INTERNATIONAL STANDARD 0 ISO ISO 11687=3:1995(E) Plain bearings - Pedestal plain bearings - Part 3: Centre flange bearings 1
14、 Scope This part of ISO 11687 specifies design character- istics for centre flange bearings for the size range 9 to 28, as weil as design characteristics for shafts. It is applicable to centre flange bearings used mainly in electrical and turbo engineering industries. 2 Normative references The foll
15、owing Standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 11687. At the time of publication, the editions indicated were valid. All Standards are subject to revision, and Parties to agreements based on this part of ISO 11687 are encouraged to
16、 investi- gate the possibility of applying the most recent edi- tions of the Standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 185:1988, Grey cast iron - Classification. ISO 426-1 :1983, Wrought topper-zinc alloys - Chemical composit
17、ion and forms of wrought products - Part 7: Non-leaded and special topper-zinc alloys. ISO 426-2:1983, Wrought topper-zinc alloys - Chemical composition and forms of wrought products - Part 2: Leaded topper-zinc alloys. ISO 630: 1980, Structural steels. ISO 683-11 :1987, Heat-treatable steels, alloy
18、 steels and free-cutting steels - Part 11: Wrought case- hardening s teels. ISO 1302:1992, Technical drawings - Method of in- dica ting surface texture. ISO 2768-1 :1989, General tolerantes - Part 7: Tol- erances for linear and angular dimensions without in- dividual tolerante indica tions. ISO 2768
19、-2:1989, General tolerantes - Part 2: Ge- ometrical tolerantes for features without individual tolerante indica tions. ISO 3755:1991, Cast carbon steels for general engi- neenng purposes. ISO 4381 :1991, Plain bearings - Lead and tin casting alloys for multilayer plain bearings. ISO 8062:1994, Casti
20、ngs - System of dimensional tolerantes and machining allowances. ISO 12129-1: -1, Plain bearings - Part 1: Fits. ISO 12129-2: -J), Plain bearings - Part 2: Tolerantes on form and Position and surface roughness for shafts, flanges and thrust collars. 1) To be published. ISO 11687=3:1995(E) 0 ISO 3 Ty
21、pes of bearing According to their design, centre flange bearings tan be devised as follows, each characteristic being des- ignated by a letter Symbol. Housing: M Centre flange bearing with cooling fins Heat dissipation: N Natura1 cooling W Water cooling in Oil sump U Circulation pump and natura1 coo
22、ling T Circulation pump and water cooling in oil sump Z Recirculating oil lubrication with external cooling of oil Shape of bore for journal bearing and type of lu- brication: C Circular cylindrical bore without oil ring L Circular cylindrical bore with Split oil ring not fixed on a rotating shaft Y
23、 Lobed bearing with two sliding surfaces without oil ring v Lobed bearing with four sliding surfaces without oil ring Thrust bearing: Q Without sliding surfaces non-locating (free) bearing B Plain sliding surfaces with oil grooves (guide bear- in K Wedge surfaces A Tilting pads t (design and dimensi
24、ons at the manufacturers dis- cretion) Seal: Type and dimensions subject to agreement The Symbols above figure 1 explain only the type il- lustrated; the complete type required shall be speci- fied in the above-mentioned sequence when ordering. 4 Dimensions See figures 1 to 3 and tables 1 and 2. The
25、 centre flange bearings are not expected to con- form to the design illustrated in figure 1; compliance is only required with respect to the di ified. NOTE 1 All dimensions are given in mil Details which are not specified shal appropriate. nensions spec- imetres. be Chosen as 5 Shaft design See figu
26、res 2 and 3 and table2. 6 Materials Housing: Grade 300 in accordance with ISO 185; other ma- terials subject to agreement Half-bearing: Bearing back: Fe 360 B in accordance with ISO 630 Cl 0 or Cl 5 E 4 in accord- ante with ISO 683-11 200 to 400 in accordance with ISO 3755 Bearing metal: Type of at
27、the material manufactu discretion rers Lead-tin-alloy in accordance with ISO 4381, or subject to agreement Seal: Copper alloy, aluminium alloy or plastic, subject to agreement Oil ring, not fixed on rotating shaft: Copper-zinc alloy in accordance with ISO 426, or subject to agreement 0 ISO ISO 11687
28、=3:1995(E) 7 Design General tolerantes: For machined surfaces: ISO 2768-1 and ISO 2768-2 - mH For unmachined surfaces: ISO 8062 - CT 9 (for grade 300), or corre- sponding Standards for other materials agreed upon. Surface roughness in accordance with ISO 1302: Flange bearing: Mounted surfaces: Ra =
29、3,2 Pm Sliding surfaces: R, = 0,8 Pm Shaft: See table 2, footnote 1. Housing: Flange bearing housing with lifting eye bolts or means of conveyance at the manufacturers dis- cretion. The inner surfaces of the housing shall be clean and shall have a coat of paint resistant to oil and solvents. The out
30、er surfaces of the housing shall be pro- tected against corrosion. For the purpose of pressure compensation, the individual oil spaces within the flange bearing housing shall be connected to each other by means of appropriate openings above the oil Ievel. All bearing housing connections on both side
31、s; other connecting dimensions and arrangements than those given in figure 1 as well as additional connections subject to agreement. Type of discretio inspection plate at the man ufactu rers n. With bolts and screws for housing Parts and Seals, at the manufacturers discretion. Bolts and screws for t
32、he housing flange do not form part of the delivery. General: Particular agreements shall be made for applica- tions under special conditions (e.g. inclined pos- itions). Chamfered edges: type of edge chamfering at the manufacturers discretion. If the bearing is only applicable to one direction of ro
33、tation, a directional arrow shall be provided. 8 Designation EXAM PLE Designation of a centre flange bearing of size 14, shaft diameter 125 mm, housing with cooling fins (M), for recirculating oil lubrication with extemal cooling of oil (Z), circular cylindrical bore with Split oil ring not fixed on
34、 a rotating shaft for emergency run (L) and thrust bearing with wedge surfaces (K): Centre flange bearing ISO 11687-3 - 14 - 125 - MZLK ISO 11687=3:1995(E) imension for extension o be agreed upon with he manufacturer Bearing plate Oil drainage IexampLe) M.LB M.LK ISO 11687=3:1995(E) M.LQ 9 9 -+ L t
35、l b V LOil outflow b5 ;! b4 1 d13 Oil inlet (recirculating plant, circulation pump) 2 Thread G 112 Connection for thermoprobe 3 d14 Oil-level indicator or oil drainage for recirculating plant Machine seal with pressure compensation at the manufacturers discretion -f -_ 4 Screw plug (connection for r
36、adiator, oil-sump thermometer, suction line of circulation pump, finned cooler) Figure 1 - Examples of centre flange bearings - Size range 9 to 28 ISO 11687=3:1995(E) 0 ISO Table 1 - Centre flange bearings - Size range 9 to 28 (see figure 1) Size 9 11 14 18 22 28 D H7) 80 90 100 100 110 125 125 140
37、160 160 180 200 200 225 250 250 280 300 B 2) 60 80 105 135 170 215 b, 80 100 125 160 200 250 b2 160 190 225 265 335 425 b3 80 95 112,5 132,5 167,5 212,5 b.4 30 30 30 30 30 35 b5 20 20 25 25 30 30 h, 16 18 20 25 30 30 15 3 100 115 135 150 185 225 4 80 100 125 160 200 250 (nominal dimension 90 110 140
38、 180 225 280 Seal) 100 125 160 200 250 315 110 140 180 225 280 355 4 100 125 160 200 250 315 d3 150 180 230 275 340 440 Cl, 180 220 280 330 420 550 4 h6 375 450 530 630 800 1 000 43 400 475 560 670 850 1 060 d7 425 500 600 710 900 1 120 43 270 320 380 450 570 730 4 285 340 400 475 600 765 d 10 300 3
39、55 425 500 630 800 41 M6 M6 M6 M8 MIO M12 d 12 11 13,5 17,5 22 26 33 43 4 G 318 G 318 G 318 G 1/2 G 314 G 314 44 4, GI 114 G 1 1/4 G 1 1/2 G 1 112 G2 G 2 1/2 hl 212 250 300 355 450 560 h2 110 130 160 190 235 300 1 250 300 355 425 530 670 c# d, 4, 90 80 110 100 140 125 180 160 225 200 280 250 e8 100
40、90 125 110 160 140 200 180 250 225 315 280 110 100 140 125 180 160 225 200 280 250 355 315 d 18 90 100 110 110 125 140 140 160 180 180 200 225 225 250 280 280 315 315 r1 5) 2,5 25 4 4 6 6 r2 5) 4 4 6 6 10 10 1) Limit deviations for shafts and tolerantes of form and Position and surface roughnesses i
41、n accordance with ISO 12129-1 and ISO 12129-2. 2) Normal axial clearance of z 0,5 mm is provided. If a Change in direction of the axial loads of axial thrusts is to be ex- pected, dimension b8 may be reduced by 0,2 mm. If a fixed bearing (thrust bearing Parts B, K) is only needed for the test run, d
42、imension b8 may be increased. 3) If the non-locating (free) bearing (thrust bearing part Q) has to allow major axial movements (e.g. due to thermal ex- pansion or large constitutional axial clearance), dimension b, may be increased. 4) The clearance groove d17 may be omitted, if it is equal to or smaller than the shaft diameter D. 5) The radii rl and r2 may be replaced by an undercut. Standards South AfricaThis s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .
