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 0-626-16228-9 SANS 11687-1:2005Edition 1ISO 11687-1:1995Edition 1SOUTH AFRICAN NATIONAL STANDARD Plain bearings Pedestal plain bearing
4、s Part 1: Pillow blocks This national standard is the identical implementation of ISO 11687-1:1995 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: 012 428 79
5、11 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 11687-1:2005 Edition 1 ISO 11687-1:1995 Edition 1 Table of changes Change No. Date Scope Abstract Specifies design characteristics for pillow blocks for size ranges 9 to 28 and 35 to 71, as well as design ch
6、aracteristics 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 procedures of St
7、andards South Africa, in compliance with annex 3 of the WTO/TBT agreement. INTERNATIONAL STANDARD ISO 11687-1 First edition 1995-02-01 Plain bearings - Pedestal plain bearings - Part 1: Pillow blocks Paliers lisses - Paliers lisses 2 chaise sur Ie so/ - Partie 7: Supports de paliers Reference number
8、 ISO 11687-1: 1995(E) ISO 116874:1995(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 committees. Esch member b
9、ody 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 International Electro
10、technical Commission (IEC) 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 member bodies casting a
11、vote. International Standard ISO 11687-1 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 bearings - Pedestal plain bearings: - Part 7: Pillo
12、w 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 microfilm, without Permissi
13、on 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=1:1995(E) Plain bearings - Pedestal plain bearings - Part 1: Pillow blocks 1 Scope This part of ISO 11687
14、specifies design character- istics for pillow blocks for size ranges 9 to 28 and 35 to 71, as weil as design characteristics for shafts. lt is applicable to pillow blocks used mainly in elec- trical and turbo engineering industries. 2 Normative references The following Standards contain provisions w
15、hich, through reference in this text, constitute provisions of this patt 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 investi- gate the possibility of ap
16、plying 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 composition and forms of wrought products -
17、Part 1: Non-leaded and special topper-zinc alloys. ISO 426-2: 1983, Wrough t 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 steels and free-cutting steels -
18、Part 7 7: Wrought case- hardening s teels. ISO 1302:1992, Technical drawings - Method of in- dicating sur-face texture. ISO 2768-1 :1989, General tolerantes - Part 1: Tol- erances for linear and angular dimensions without in- dividual tolerante indica tions. ISO 2768-2:1989, General tolerantes - Par
19、t 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, Castings - System of dimensional toler
20、antes and machining allowances. ISO 12129-1: -l), Plain bearings - Part 1: Fits. ISO 12129-2: -1, Plain bearings - Part 2: Tolerantes on form and Position and surface roughness for shafts, flanges and thrust collars. 1) To be published. ISO 116871:1995(E) 0 ISO 3 Types of pillow block According to t
21、heir design, pillow blocks tan be de- vised as follows, each characteristic being designated by a letter Symbol. Housing: G Pillow block, without cooling fins R Pillow block, with cooling fins Heat dissipation: N Natura1 cooling W Water cooling in oil sump U Circulation pump and natura1 cooling T Ci
22、rculation pump and water cooling in oil sump Z Recirculating oil lubrication with external cooling of Shape of brication: bore for journal bearing and type of lu- C Circular cylindrical bore without oil ring l- Circular cylindrical bore with Split oil ring not fixed on a rotating shaft Y Lobed beari
23、ng 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 sur-faces with oil grooves (guide bear- ing) K Wedge surfaces A Tilting pads i (design and dimensions at th
24、e manufacturers dis- cretion) Seal: Type and dimensions subject to agreement Figures 1 and 2 show examples of pillow blocks. These represent pillow blocks, which are ready to be installed, in the size ranges 9 to 28 and 35 to 71, re- spectively. The Symbols above figures 1 and 2 explain only the typ
25、e illustrated; the complete type required shall be specified in the above-mentioned sequence when or- dering. For reasons of design (e.g. on account of limited space) and economy, it is only possible to construct the size range 35 to 71 with thrust bearings (A) with the dimensions given in table3. 4
26、 Dimensions See figures l to 4 and tables 1 to 4. The pillow blocks are not expected to conform to the designs illustrated in figures 1 and 2; compliance is only required with respect to the dimensions speci- fied. NOTE 1 All dimensions are given in millimetres Details which are not specified shall
27、be Chosen as appropriate. 5 Shaft design See figures 3 and 4 and tables 3 and 4. 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 4
28、00 in accordance with ISO 3755 Bearing metal: Type of material at the manufacturers discretion 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 accordan
29、ce with ISO 426, or subject to agreement 0 ISO ISO 116871:1995(E) 7 Design All bearing housing connections on both sides; other connecting dimensions and arrangements than those given in figures 1 and 2 as weil as ad- ditional connections subject to agreement. General tolerantes: For machined surfac
30、es: Type of inspection plate at the manufacturers discretion. ISO 2768-1 and ISO 2768-2 - mH With two pull-off screws manufacturers discretion. at housing base at the For unmachined surfaces: ISO 8062 - CT 9 (for grade 300), or corre- sponding Standards for other materials agreed upon. With bolts an
31、d screws for housing Parts and Seals, at the manufacturers discretion. Bolts an d screws and dowel pins for base do not form Part of the delivery. the hous ing Surface roughness in accordance with ISO 1302: Pillow block: General: Mounted surfaces: R, = 3,2 Pm Sliding surfaces: R, = 0,8 Fm Particular
32、 agreements shall be made for applica- tions under special conditions (e.g. inclined pos- itions). Shaft: Chamfered edges: type of edge chamfering at the manufacturers discretion. See tables 3 and 4, footnote 1. Housing: If the bearing is only applicable to one direction rotation, a directional arro
33、w shall be provided. of Pillow block housing with lifting eye bolts or means of conveyance at the manufacturers dis- cretion. 8 Designation The inner surfaces of the housing shall be clean and shall have a coat of paint resistant to oil and solvents. EXAMPLE Designation of a pillow block of size 14,
34、 shaft diam- eter 125 mm, housing with cooling fins (R), for recir- culating oil lubrication with extemal cooling of oil (Z), circular cylindrical bore with Split oil ring not fixed on a rotating shaft for emergency run (L) and thrust bearing with wedge surfaces (K): The outer surfaces of the housin
35、g shall be pro- tected against corrosion. For the purpose of pressure compensation, the individual oil spaces within the pillow block hous- ing shall be connected to each other by means of appropriate openings above the oil level. Pillow block ISO 11687-1 - 14 - 125 - RZLK 3 ISO 116874:1995(E) RN.B
36、Inspect GZ.A ion plate , J-5 _ 63 - _- L .I . A I ; 2 I I I V RLB + L 1 a$ Oil inlet (recirculating plant, circulation pump) 2 Thread G 1/2 Connection for thermoprobe 3 4 Oil-level indicator or oil drainage for recirculating plant Oil drainage (example) GZ.A =k 1 4 Screw plug (connection for radiato
37、r, oil-sump thermometer, suction line of circulation pump, finned cooler) Figure 1 - Examples of pillow blocks - Size range 9 to 28 ISO 1168701:1995(E) Table 1 - Pillow blocks - Size range 9 to 28 (see figure 1) Size 9 11 14 18 22 28 D H7,) 80 90 100 100 110 125 125 140 160 160 180 200 200 225 250 2
38、50 280 30C I B 2) 60 80 105 135 170 215 bl 80 100 125 160 200 250 b2 145 165 205 245 310 370 b3 190 205 255 300 380 450 b4 150 170 215 255 320 380 4 80 100 125 160 200 250 (nominal dimension 90 110 140 180 225 280 Seal) 100 125 160 200 250 315 110 140 180 225 280 355 4 150 180 230 275 340 440 22 26
39、30 40 46 55 4 for M16 for M20 for M24 for M30 for M36 for M42 d4 3) IO,4 IO,4 IO,4 15,5 15,5 20,6 d5 4) G 318 G 318 G 318 G 112 G 314 G 314 4 4 G 1 114 G 1 114 G 1 112 G 1 112 G2 G 2 112 el 300 375 450 560 670 800 e2 90 100 125 150 200 250 hl -i, 190 225 265 315 375 450 h2 325 380 460 565 680 830 kl
40、 35 50 60 70 80 90 11 355 450 540 660 800 950 12 215 280 340 440 540 650 5 28 30 40 50 60 85 $k 5) (spherical) h6 190 212 280 335 425 530 1) Applies only to circular cylindrical bores. 2) For the design with thrust bearing part (A), dimensions B may slightly deviate in Order to obtain (depending on
41、the type of tilting pad) a constant dimension b, (interchangeability of the half-bearing Shell). 3) Rough bore for pinned fitting. 4) If larger connections are necessary, this shall be the subject of a special agreement. 5) The fit of the half-bearing and housing shall be a transition fit or shall b
42、e subject to agreement. 5 ISO 11687=1:1995(E) GZ.A GN.B Inspecti l l i l I I-l - /d4 4 e1 1 - j; GZLB + 1 d, Oil inlet for thrust bearing part (A) 2 dg4) e8 I 110 125 140 l I dl0 1 90 1 1001 110 140 160 180 180 200 225 225 250 280 2,5 r, 5) 2,5 6 4 4 6 6 6 10 IO r2 5) 4 4 1) Limit deviations for sha
43、fts and tolerantes of form and Position and surface roughness in accordance with ISO 12129-1 and ISO 12129-2. 2) Normal axial clearance of 0,5 mm is provided for size range 9 to 28 and 0,6 mm for size range 35 to 71. If a Change in direction of the axial loads or axial thrusts is to be expected, dim
44、ension 6, may be reduced by 0,2 mm for size range 9 to 28 and by 0,3 mm for size range 35 to 71. If a fixed bearing (thrust bearing Parts B, K) is only needed for the test run, dimension b5 may be increased. 3) If the non-locating (free) bearing (thrust bearing part Q) has to allow major axial movem
45、ents (e.g. due to thermal ex- pansion or large constitutional axial clearance), dimension b7 may be increased. 4) The clearance groove G$ may be omitted if it is equal to or smaller than the shaft diameter D. 5) The radii y1 and r2 may be replaced by an undercut. 9 ISO 116871:1995(E) Table 4 - Shaft dimensions - Size range 35 to 71 (see figures 3 and 4) In z 0 c7 7 6 +i N uj - F ci Q 8 0 lo” - m z 10 Standards South AfricaThis s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .
