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1、BRITISH STANDARD BS 6276:1987 Specification for Dimensions and identification code for mounting flanges and shaft ends for hydraulic fluid power pumps and motors UDC 621.66:621.225.4:621.824:621.643.412 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy
2、, (c) BSI BS 6276:1987 This British Standard, having been prepared under the direction of the Machinery and Components Standards Committee, was published under the authority of the Board of BSI and comes into effect on 31 July 1987 BSI 09-1999 First published November 1982 First revision July 1987 T
3、he following BSI references relate to the work on this standard: Committee reference MCE/18 Draft for comment 85/70509 DC ISBN 0 580 15956 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Machinery and Components Standards Committee (MC
4、E/-) to Technical Committee MCE/18 upon which the following bodies were represented: Association of British Mining Equipment Companies British Compressed Air Society British Fluid Power Association British Hydromechanics Research Association British Steel Corporation British Telecommunications plc D
5、epartment of Trade and Industry (National Engineering Laboratory) Electricity Supply Industry in England and Wales Federation of Manufacturers of Construction Equipment and Cranes Institution of Mechanical Engineers Machine Tool Industry Research Association Ministry of Defence The following bodies
6、were also represented in the drafting of the standard, through subcommittees and panels: Bath University Library British Railways Board Institution of Production Engineers Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No.Date of issueComments Licensed Co
7、py: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:1987 BSI 09-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Dimensions1 3Tolerances7 4Identification code7 5Marking of oval, square and rectangular flanges9 6Matin
8、g components9 Appendix A Non-preferred flanges and additional features10 Appendix B Recommendations for the use of existing castings13 Appendix C Examples of methods for sealing mounting flanges and their mating surfaces13 Figure 1 Basic layout for oval mounting flanges1 Figure 2 Basic layout for sq
9、uare mounting flanges2 Figure 3 Basic layout for rectangular mounting flanges3 Figure 4 Basic layout for polygonal and circular mounting flanges4 Figure 5 Cylindrical shaft end with parallel key or with metric involute metric spline shaft6 Figure 6 Conical shaft end with key and external thread7 Fig
10、ure 7 Basic layout for oval mounting flanges10 Table 1 Dimensions for oval mounting flanges2 Table 2 Dimensions for square mounting flanges3 Table 3 Dimensions for rectangular mounting flanges4 Table 4 Dimensions for polygonal and circular mounting flanges5 Table 5 Nominal shaft diameter relationshi
11、p to spigot diameter for oval, square and rectangular flanges6 Table 6 Nominal shaft end diameters for polygonal and circular flanges6 Table 7 Metric involute spline shaft ends7 Table 8 Non-preferred dimensions for oval mounting flanges11 Table 9 Non-preferred dimensions for square mounting flanges1
12、2 Table 10 Non-preferred dimensions for rectangular mounting flanges13 Table 11 Nominal shaft diameter relationship to spigot diameter for non-preferred flanges13 Table 12 Relationship between standards for flange castings14 Table 13 “O”-rings which can be accommodated in flange spigots14 Publicatio
13、ns referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:1987 ii BSI 09-1999 Foreword This British Standard has been prepared under the direction of the Machinery and Components Standards Committee and is a rev
14、ision of BS 6276:1982, which is withdrawn. It is technically equivalent to ISO 3019-2:1986 and ISO 3019-3:1981, published by the International Organization for Standardization (ISO). It specifies interchangeability dimensions for mounting flanges and associated drive shaft ends. The oval, square and
15、 rectangular flanges relate mainly to pumps and motors on construction and industrial machinery for which it is possible to define specific spigot and shaft diameter relationships. The polygonal and circular flanges, however, relate to certain types of hydraulic motor for which it is not possible to
16、 lay down such a relationship because of design limitations. This revision includes dimensions and associated changes related to cylindrical shaft ends with involute spline and an additional smaller size of rectangular mounting flange (Table 3). Appendix A provides details of non-preferred flanges h
17、aving intermediate dimensions. It also describes additional features that may be incorporated by agreement between manufacturer and purchaser. Appendix B makes recommendations for the use of existing castings formerly used for the manufacture of flanges in accordance with earlier industrial inch sta
18、ndards. Appendix C provides examples of methods for sealing mounting flanges and their mating surfaces. 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 Stand
19、ard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 14, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorpor
20、ated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:1987 BSI 09-19991 1 Scope This British Standard specifies dimensions and an identification code for positi
21、ve displacement rotary hydraulic fluid power pump and motor mounting flanges of the following types (including short and long spigot options): a) two-hole oval flanges; b) four-hole square flanges; c) four-hole rectangular flanges; d) multi-hole polygonal or circular flanges. The standard also speci
22、fies dimensions and an identification code for the related shaft ends of these pumps and motor mounting flanges, i.e. for the following: 1) cylindrical shaft ends with parallel key; 2) conical shaft ends with key and external thread; 3) cylindrical shaft ends with involute spline. NOTEThe titles of
23、the publications referred to in this standard are listed on the inside back cover. 2 Dimensions 2.1 Mounting flanges The dimensions of flanges shall be as follows: a) oval mounting flanges: in accordance with Figure 1 and Table 1; b) square mounting flanges: in accordance with Figure 2 and Table 2;
24、c) rectangular mounting flanges: in accordance with Figure 3 and Table 3; d) polygonal or circular mounting flanges: in accordance with Figure 4 and Table 4. 2.2 Mounting holes Each flange shall be provided with either clearance holes of diameter d for fixing bolts in accordance with the relevant fi
25、gures and tables given in 2.1 or slots1). 1) Holes are normally provided. *Surface texture as determined in accordance with BS 1134-1. Figure 1 Basic layout for oval mounting flanges Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:19
26、87 2 BSI 09-1999 Table 1 Dimensions for oval mounting flanges (in mm) Short and long spigot versions Short spigot version Long spigot version S (h8a) KFixingsa max. b max. w c max. R max. (R min. = 0) YcZc mm/mm FN,ML max. NumberBolts, nominal diameterb Clearance holes (slots) d (H13a) x 3256 M66.60
27、.3 7550 0.0815.5 40638056 5080 M89 0.5 10665 71.50.50.20 0.00158 63 1001258019.5 80 109 2M1011140 1000.25 100 140M1214 1 177 125 92.01.6 0.30 0.10 24.5 125 180M1618224 150 0.35 0.002010 31.5 160 224M2022280 20039.5 200 280M2426335 23649.5 a For tolerance values, see BS 4500-1. b Threads selected fro
28、m BS 3643-1. c Tolerances stated are for the unladen condition. (Rigid couplings may require closer tolerances.) *Surface texture as determined in accordance with BS 1134-1. Figure 2 Basic layout for square mounting flanges +0.5 0 +1 0 16+1 0 20+1 0 25+1 0 32+1 0 40+1 0 50+1.2 0 Licensed Copy: sheff
29、ieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:1987 BSI 09-19993 Table 2 Dimensions for square mounting flanges (in mm) Short and long spigot versions Short spigot version Long spigot version S (h8a) KFixingsa max. b max. w c max.R max. (R min. = 0) Yc
30、Zc mm/mm N,ML max. NumberBolts, nominal diameterb Clearance holes (slots) d (H13a) x 6385 M89 10680 71.50.5 0.20 819.5 80 1030.5125 1000.25 0.0015 100 125 4 M1011160 1250.3024.5 125 160M1214200 15031.5 160 200M1618 1 250 190 92.01.60.35 0.0020 1039.5 200 250M2022300 236 49.5 250 315M2426375 3010.40
31、a For tolerance values, see BS 4500-1. b Threads selected from BS 3643-1. c Tolerances stated are for the unladen condition. (Rigid couplings may require closer tolerances.) *Surface texture as determined in accordance with BS 1134-1. Figure 3 Basic layout for rectangular mounting flanges +0.5 0 +1
32、0 20+1 0 25+1 0 32+1 0 40+1 0 50+1.2 0 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:1987 4 BSI 09-1999 Table 3 Dimensions for rectangular mounting flanges (in mm) Short and long spigot versions Short spigot version Long spigot ver
33、sion S (h8a) KPFixingsa max. b max. H max. w c max. R max. (R min. = 0) YcZc mm/mm N ML max. NumberBolts, nominal diameterb Clearance holes (slots) d (H13a) x 506872M66.60.38262860.15 0.00158 638590 M89 10680 110 71.50.5 0.20 19.5 80 103 1090.5125 100 1360.25 100 125 132 4 M1011160 125 1690.3024.5 1
34、25 160 170M1214200 150 207 92.01.6 0.35 0.0020 10 31.5 160 200 212M16181250 190 26139.5 200 250 265M2022300 236 32449.5 a For tolerance values see BS 4500-1. b Threads selected from BS 3643-1. c Tolerances stated are for the unladen condition. (Rigid couplings may require closer tolerances.) *Surfac
35、e texture as determined in accordance with BS 1134-1. Figure 4 Basic layout for polygonal and circular mounting flanges +0.5 0 +1 0 20+1 0 25+1 0 32+ 1 0 40+1 0 50+1.2 0 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:1987 BSI 09-199
36、95 Table 4 Dimensions for polygonal and circular mounting flanges (in mm) 2.3 Shaft ends 2.3.1 Nominal diameter. The nominal diameter of the drive shaft end, d1, related to that of the spigot, S, shall be as follows: a) oval, square and rectangular flanges: in accordance with Table 5; b) polygonal o
37、r circular flanges: any suitable diameter selected from Table 6. 2.3.2 Shaft end type. The type of shaft end shall be one of the following. a) A cylindrical shaft end, short series, as illustrated in Figure 5, in accordance with BS 4506, which is fitted with a parallel key in accordance with BS 4235
38、-1. b) A conical shaft end with external thread, short series2), as illustrated in Figure 6, in accordance with BS 4506, which is fitted with either: 1) a parallel key in accordance with BS 42350-1; or 2) a Woodruff key in accordance with BS 4235-2. c) A metric involute spline shaft end with 30 pres
39、sure angle in accordance with BS 6186-1. The module of the involute spline shaft end (and corresponding number of teeth with respect to the maximum major diameter) in relation to the nominal shaft end shall be selected from Table 7 (see also Figure 5). S(h8a)KFixingsa max.w c max. R max. (R min. = 0
40、) YcZc mm/mm M Number, TBolts, nominal diameterb Clearance holes (slots) d (H13a) x 80103 5, 6, 7 or 8 M8912570.25 0.001520 1 100125M10110.516090.30 125160M1213.5200 160200M1617.52501220.350.002025 1 180224280 200250300 22428033540 1.5 250300M2022355 2803201.0375 315360425 3554004651631.650 2 400450
41、515 450510 5, 7, 8,585 500560 10, 12M24261.0635 560630 or 14710 630710800 710800900 800900M30331.51 00020560 3 900 1 0001 100 1 000 1 1001 200 a For tolerance values, see BS 4500-1. b Threads selected from BS 3643-1. c Tolerances stated are for the unladen condition. (Rigid coupling may require clos
42、er tolerances.) 2) Except nominal diameters 10 mm and 12 mm, for which BS 4506 specifies dimensions in the long series only. +1 0 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:1987 6 BSI 09-1999 Table 5 Nominal shaft diameter relat
43、ionship to spigot diameter for oval, square and rectangular flanges (in mm) Table 6 Nominal shaft end diameters for polygonal and circular flanges (in mm) Flange spigot, S Shaft end, d1 1st choice2nd choice Nominal diametera Tolerance for cylindrical shaft endb Nominal diametera Tolerance for cylind
44、rical shaft endb 32 40 50 63 80 10 12 12 16 20 j7 16 20 25 j7 1002532k7 125 160 32 40 k740 50 2005063m7 25063m7 a Values selected from BS 4506. b Tolerances as determined in accordance with BS 4500-1. Shaft end, d1a 16, 20, 2532, 40, 5063, 70, 80, 90, 100, 110, 125, 140, 160, 180, 200 Tolerance for
45、cylindrical shaft endb j7k7m7 a Values selected from BS 4506. b Tolerances as determined in accordance with BS 4500-1. Figure 5 Cylindrical shaft end with parallel key or with metric involute spline shaft Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Co
46、py, (c) BSI BS 6276:1987 BSI 09-19997 Table 7 Metric involute spline shaft ends 3 Tolerances 3.1 General Tolerances shall be as given in the appropriate table. Where tolerances are not specified, the dimensions are nominal dimensions. 3.2 Geometrical tolerances The symbols for form and position, sho
47、wn in Figure 1 to Figure 4 and Figure 7 to Figure 9, shall be interpreted in accordance with BS 308-3. 4 Identification code 4.1 Flanges Flanges shall be identified by a code comprising the following elements: a) description, i.e. “Flange”; b) a number corresponding to the spigot diameter S in milli
48、metres; NOTEOn conical shafts the length of the conical surface can exceed l2 towards the mounting flange provided that diameter d1 is located at l2. Figure 6 Conical shaft end with key and external thread Nominal shaft end diameter, d1 Short length, l1 Involute spline shaft end ModuleNumber of teet
49、h Maximum major diameter mmmmmm 10 12 16 20 25 32 40 50 63 20 25 28 36 42 58 82 82 105 0.5 0.75 1 1 1 1 1 2.5 2.5 19 15 15 19 24 31 39 19 24 10 12 16 20 25 32 40 50 62.5 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:51:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6276:1987 8 BSI 09-1999 c) a letter to indicate the flange shape, i.e. “A” for oval flange “B” for square flange “C” for rectangular flange “D” for polygonal or circular flange; d) the number of fixing holes; e)