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1、BRITISH STANDARD BS 464:1958 Incorporating Amendment Nos. 1 and 2 Specification Thimbles for wire ropes Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:47:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 464:1958 This British Standard, having been approved by the Mechanical Engineering Ind
2、ustry Standards Committee and endorsed by the Chairman of the Engineering Divisional Council, was published under the authority of the General Council on 31 March 1958 BSI 09-1999 First published October 1932 First revision March 1958 The following BSI references relate to the work on this standard:
3、 Committee reference MEE/18 and MEE/18/4 Draft for comment CX(MEE) 946 ISBN 0 580 00885 1 Co-operating organizations The Mechanical Engineering Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departme
4、nts and scientific and industrial organizations: Admiralty*High Commission of India* Air MinistryInstitute of Marine Engineers Associated Offices Technical CommitteeInstitute of Petroleum Association of Consulting Engineers Institution of Civil Engineers (Incorporated)Institution of Gas Engineers Br
5、itish Chemical Plant Manufacturers Institution of Heating and Ventilating AssociationEngineers British Compressed Air SocietyInstitution of Mechanical Engineers* British Electrical and Allied Manufacturers Institution of Mechanical Engineers Association(Automobile Division) British Engineers Associa
6、tion*Institution of Production Engineers British Internal Combustion Engine Locomotive and Allied Manufacturers Manufacturers AssociationAssociation of Great Britain British Iron and Steel Federation*Ministry of Labour and National Service British Railways, The British Transport (Factory Inspectorat
7、e)* CommissionMinistry of Power* Central Electricity Authority and Area BoardsMinistry of Supply Crown Agents for Oversea Governments and Ministry of Transport and Civil Aviation* Administrations*Ministry of Works D.S.I.R. Mechanical Engineering Research National Coal Board* LaboratoryNational Physi
8、cal Laboratory (D.S.I.R.)* Engineering Equipment Users AssociationRadio Industry Council Gas CouncilWar Office The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Committee entrusted with the preparation of this standard: Associa
9、tion of Crane MakersInstitute of Iron and Steel Wire Manufacturers Bureau VeritasInstitute of Mining and Metallurgy Federation of Wire Rope Manufacturers of Institution of Mining Engineers Great BritainLloyds Register of Shipping General Post OfficeNational Association of Lift Makers Institute of Br
10、itish FoundrymenIndividual manufacturers Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:47:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 464:1958 BSI 09-1999i Contents Page Co-operating organizationsInside front cover Forewordii
11、1Scope1 2Nominal size1 3Quality of material1 4Form and dimensions1 5Tolerance on dimensions1 6Boss and lightening hole in solid thimbles1 7Workmanship1 8Freedom from defect2 9Condition and galvanizing2 10Text deleted2 11Inspection2 12Manufacturers records of material2 Appendix A Recommended method o
12、f making a wire rope thimble splice8 Figure 1 Ordinary thimble2 Figure 2 Reeving thimble4 Figure 3 Solid thimble6 Table 1 Ordinary thimbles3 Table 2 Reeving thimbles5 Table 3 Solid thimbles7 Table 1a Ordinary thimbles (metric equivalents)9 Table 2a Reeving thimbles (metric equivalents)10 Table 3a So
13、lid thimbles (metric equivalents)11 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:47:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 464:1958 ii BSI 09-1999 Foreword This standard makes reference to the following British Standards: BS 15, Mild steel for general structural purposes. BS 3
14、02/621, Steel wire ropes for cranes, excavators and general engineering purposes. BS 309, Whiteheart malleable iron castings. BS 310, Blackheart malleable iron castings. BS 350, Conversion factors and tables. BS 592, Carbon steel castings. BS 729, Zinc coatings on iron and steel articles Part 1: Hot
15、-dip galvanized coatings. BS 970, Wrought steels. BS 1290, Wire rope slings and sling legs. BS 2789, Iron castings with spheroidal or nodular graphite. This British Standard, prepared under the authority of the Mechanical Engineering Industry Standards Committee, forms one of a series which comprise
16、s terminal fittings for wire rope and chain to be used for lifting purposes. In this revision, to bring the standard into line with BS 302/621, “Steel wire ropes for cranes, excavators and general engineering purposes”, the nominal size of the thimble is the diameter of the steel wire rope with whic
17、h it is intended to be used. For convenience, the circumferential sizes of rope for which the thimbles are suitable are also included in Table 1, Table 2 and Table 3. The thimbles specified are intended for wire ropes, subject to a live load, as used or cranes and lifts; and also for wire rope sling
18、s and similar general engineering and marine purposes. The proportions and dimensions of the specified thimbles have been determined with regard to the strength and rigidity essential for such purposes and are related to the working strength of the single part of rope. The grooves on all thimbles, e
19、xcept those for sizes larger than 15/8 in. in Table 1, are suitable for bare, i.e. unserved, rope. As the larger sizes of these ordinary open thimbles in Table 1 are often required to accommodate served rope, the grooves are designed accordingly. In certain designs of slings the use of thimbles of a
20、 larger size than the nominal is specified. However, this is not intended to prohibit the use of the larger sized thimble, on which the score (rope groove) has been closed in to approximate more closely to the diameter of the rope. There is a limited demand for mild steel ordinary and reeving thimbl
21、es with flanges cut square to the longer axis at the point of the thimble and also for thimbles with flanges welded at the point. It is not desired to exclude such thimbles, but the thimbles specified are suitable for their intended purpose and requirements do not warrant the inclusion in this stand
22、ard of welded or “cut point” ordinary and reeving thimbles. Ordinary and reeving thimbles with welded or cut points which conform otherwise to this standard are equally acceptable if preferred by the user. Solid thimbles made of ordinary cast iron have adequate strength to withstand static loads, su
23、ch as occur at the inner or drum end of crane ropes or at the ends of standing wire ropes, where they are in common use. They are not suitable for live loads. Furthermore, the flanges of ordinary cast iron thimbles frequently fracture owing to rough usage in handling, transport and service. Such thi
24、mbles are accordingly excluded from this standard, but solid thimbles made of spheroidal graphite iron BS 27891) are acceptable for ropes up to and including 11/2 in diameter. 1) BS 2789, “Iron castings with spheroidal or modular graphite”. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:4
25、7:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 464:1958 BSI 09-1999iii As one object of the use of solid thimbles is to provide a compact terminal and connection, free from excessive lateral movement, it will be realized that a hole unnecessarily large for the bolt does not achieve the objective
26、. It is therefore incumbent on the purchaser to specify the diameter for the hole, if one smaller than that given in Table 3, col. “M”, is required. Thimbles for use on sling legs made of the doubled part of rope, i.e. rope spliced endless, or as a grommet, should be two or three sizes larger than t
27、he nominal size for the rope, see BS 1290, “Wire rope slings and sling legs”. Recommendations on splicing are given in Appendix A of this standard.2) NOTEWhere metric equivalents have been given, the figures in British units are the standard. The metric conversions are approximate. More accurate con
28、versions should be based on the tables in BS 350, “Conversion factors and tables”. 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 Standard does not of itsel
29、f confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 11 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendmen
30、t table on the inside front cover. 2) Detailed information on the method of making a five tucked splice is given in BS Handbook No. 4, “Lifting tackle. Part 1, Ropes and fittings”. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:47:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Lic
31、ensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:47:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 464:1958 BSI 09-19991 1 Scope This British Standard specifies materials for and dimensions of thimbles of ordinary reeving or solid types for wire ropes, of nominal sizes as follows: 2 Nominal
32、size The nominal size of the thimbles, whether ordinary, reeving or solid, shall be the diameter of the wire rope for which they are intended as given in Table 1, Table 2 and Table 3. For wire ropes of intermediate sizes the next larger size of thimble shall be used. NOTEThe grooves on all thimbles,
33、 except those for sizes larger than 1* in. in Table 1, are suitable for bare, i.e. unserved, rope. As the larger sizes of these ordinary open thimbles in Table 1 are often required to accommodate served rope, the grooves are designed accordingly. 3 Quality of material a) Ordinary and reeving thimble
34、s. Ordinary and reeving thimbles shall be made either from crescent-shaped rolled steel bar or may be forged. When made of rolled steel bar, the steel shall comply with the requirements specified in BS 15, “Mild steel for general structural purposes”, for No. 1 quality steel. When forged, the steel
35、shall comply with the requirements specified in BS 970, “Wrought steels”, specification En 3A. b) Solid thimbles. i) For ropes up to and including 11/2 in (38 mm) diameter, solid thimbles shall be steel castings, malleable iron castings, spheroidal graphite iron castings or steel forgings as specifi
36、ed by the purchaser. ii) For ropes over 11/2 in. (38 mm) diameter, solid thimbles shall be steel castings or steel forgings. Steel castings shall comply with the requirements specified in BS 592, “Carbon steel castings”, Grade A. Steel forgings shall comply with the requirements specified in BS 970,
37、 “Wrought steels”, Specification En 3A. Malleable iron castings shall comply with the requirements specified in BS 309, “Whiteheart malleable iron castings”, or BS 310., “Blackheart malleable iron castings”. Spheroidal graphite castings shall comply with the requirements specified in BS 2789, “Iron
38、castings with spheroidal or nodular graphite”, Types 2A or 2B. 4 Form and dimensions The form of the thimbles shall be as shown in Figure 1, Figure 2 or Figure 3, and the dimensions of the thimbles shall be in accordance with Table 1, Table 2 or Table 3, for ordinary, reeving and solid thimbles, res
39、pectively. 5 Tolerance on dimensions All dimensions, with the exception of those shown as minimum or approximate in Table 1, Table 2 and Table 3, shall be subject to a tolerance of plus or minus 5 per cent. Those shown as minimum shall be subject only to a tolerance of plus 5 per cent (dimensions C
40、and F); and to plus 10 per cent (dimension K). 6 Boss and lightening hole in solid thimbles Solid thimbles may be provided with a projecting circular boss on each face, and if so provided the faces of such bosses shall be machined and the thimbles shall conform in all other respects to the dimension
41、s specified in Table 3. Solid thimbles for ropes over 11/2 in. (38 mm) diameter may be made with a lightening hole or recess toward the point of the thimble of such size and/or design that the strength of the thimble is not impaired. 7 Workmanship The thimbles shall be neatly formed, and shall be fr
42、ee from roughness and sharp edges liable to injure the wire rope. The pin-holes in solid thimbles shall be drilled from the solid or bored to finished size to suit machined pins of the sizes specified (dimension M, Table 3). The plus tolerances in the pin-holes shall be as follows: Ordinary thimbles
43、: 5/16 in. to 23/4 in. (8 mm to 70 mm). Reeving thimbles: 5/8 in. to 11/2 in. (16 mm to 38 mm). Solid thimbles: 5/16 in. to 21/2 in. (8 mm to 64 mm). Nominal size (dia. of rope)Tolerance in.in.mm 5/16 (8 mm) up to and including 5/8 (16 mm)+ 0.005 + 0.13 Over 5/8 up to and including 11/4 (32 mm)+ 0.0
44、10 + 0.25 Over 11/4+ 0.015 + 0.38 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:47:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 464:1958 2 BSI 09-1999 8 Freedom from defect Each thimble shall be carefully examined by a competent person and shall be deemed to comply with this standard
45、 only if found free from flaw or defect. 9 Condition and galvanizing a) Ordinary and reeving thimbles. Unless otherwise specified by the purchaser, ordinary and reeving thimbles shall be galvanized. The galvanized coating shall comply with BS 729-13). The tolerance specified in Clauses 5 and 7 shall
46、 apply after galvanizing. b) Solid thimbles. Unless otherwise specified by the purchaser solid thimbles shall be ungalvanized. 10 Text deleted 11 Inspection The representative of the purchaser shall have free access to the works of the manufacturer at all reasonable times; he shall be at liberty to
47、inspect the manufacture of the thimbles at any stage, and to reject any thimbles being made to his order which do not conform to the requirements of this standard. 12 Manufacturers records of material When so specified in the enquiry and order, the manufacturer shall afford proof to the purchaser th
48、at the material in the thimbles supplied conforms to the requirements of Clause 3. 3) BS 729, “Zinc coatings on iron and steel articles”, Part 1, “Hot-dip galvanized coatings”. Figure 1 Ordinary thimble Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:47:42 GMT+00:00 2006, Uncontrolled Copy
49、, (c) BSI BS 464:1958 BSI 09-19993 Table 1 Ordinary thimbles (see Figure 1) Nominal size (Dia. of rope) For ropes sized by circ. ABCDEFGJ (approx.) KQ in.in.in.in. ain. (min.) in.in. ain. (min.) in.in. ain. (min.) in. 5/16 1 7/8 11/2 1/2 15/1621/8 5/165/32 21/2 5/32 13/16 3/8 11/4117/8 9/16 11/221/2 13/321/4 3 3/16 13/8 7/16 11/211/821/8 11/16 15/827/8 1/25/16 3 3/16 11/2 1/2 15/811/425/16 13/16 13/431/8 9/165/16 31/2 7/32 111/16 9/16 13/411/425/16 13/16 13/431/8 9/165/16 31/2 7/32 111/16 5/8 215/8215/16 7/8 25/1637/8 5/811/32 41/2 5/16 21/4 11