Table Of Content

इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 15560 (2005): Point hooks with shank up to 160 tonne [MED 14: Cranes, Lifting Chains and Related Equipment] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” REAFFIRMED 2010 IS 15560 : 2005 (SupersedingIS3815:1969,IS6294:1971 and IS8610:1977) 'J.fl'?d)l/ IfFtCjj 160e;,ClCPcf>~~scn ~ - Indian Standard POINT HOOKS WITH SHANK UP TO 160 TONNE SPECIFICATION res 53.020.30 ©BIS2005 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 January 2005 Price Group 3 AMENDMENTNO.1 MARCH 2007 . TO IS 15560: 2005 POINTHOOKS WITH SHANKSUPTO 160TONNE SPECIFICATION (Foreword, secondpara, sixthline)- Delete~seoten<:e'ThisstandaJddoes notconsidered0.063tonneto 0.5tonne capacity.' (Page 1,clause 1.1.1,lastline)- Substitute'0.063'for '0.63'. (Page 4Table 1)- Substitutethefollowingtablefortheexisting: Table1DimensionalCbaraperilticsofSbaDkHooks 6.!> (Clause AlldimensionsinDJiIIimetres. ..... LiftingCapacity'e.'.. '1'IIrOIIt '1'IIrOIIt SeIIt SedIaB Tonnesfor Gi.Ie o,e.bIi o,e.bIi DIa Depth Wicltb Hei&bt . INa 2.t4 U.t" Mi" Mi" Mi" MQ% MQ% ·MQ% MtD: MQ% L M S T . G , G1 D H~ L. L E B, (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) 12 0.063 0.08 0.125 0.16 18.00. 17.50 18.00 15.50 . 10.00 53 14.00 28 0.125 0.16 0.25 0.32 21.20 20.50 20.00 20.00 12.11 70 17.00 34 0.25 0.32 0.50 0.63 25.00 24.00 22.00 25.70 16.00 84 20.00 41 0.50 0.63 1.00 1.25 ·30.00 29.00 25.00 30.70 18.00 102 22.4 47 0.63 0.80 1.25 1.60 20.60 19.20 27.00, 32.00 20.60 122'. 25.00 49 0.80 1.00 UO 2.00 23.20 21.60 30.40 36.50 23.20 130 26.50 54 1.00 1.25 2.00 2.50 26.10 24.30 34.20 40.00 26.10 139 28.00 .57 1.25 1.60 2.:10 :UO 29.00 27.00 ; 38.00 43.00 29.00 149 30.00 60. 1.60 2.00 3.20 4.00 31.90 29.70 41.80 47.50 31.90 158 31.50 64 2.00 2.50 4.00 5.00 34.80 32.40 45.60 . 51.60 34.80 170 33.50 68 2.50 3.20 5.00 630 40.60 . 37.80 53.20 60.20 40.60 188 37.50 72 3.20 4.00 6.30 8.00 46.40 43.20 60.80 68.11(j 46.40 209 42.50 76 4.00 5.00 8.00 10.00 52.20 48.60 68.40 77.40 52.20' 235 47.50 80 5.00 6.30 10.00 12.50 58.00 54.00 76.00 86.00 58.00 263 53.00 90 6.30 8.00 12.50 16.00 65.00 59.40 83.60 94.60 63.80 .: 296 60.00 101 8.00 10.00 16.00 20.00 72.20 67.50 95.00 107.50 72.50 335 67.00 113 . 10.00 12.50 20.00 25.00 81.20 75.60 106.4 120;40 .81.20 375 75.00 127 12.50 16.00 25.00 32.00 92.80 86.40 121.6 13-7.60 92.80 402 85.00 143 16.00 20.00 32.00 40.00 104.40 97.20 136.8 154.80 104.40 469 95.00 160 20.00 25.00 40.00 50.00 127.0 117.0 169.0 1.57.0 tOI.O 485 110.0 ISO 25.00 32.00 50.00 63.00 142.0 131.5 189.0 176.0 113.0 520 120.0 202 32.00 40.00 63.00 80.00 155.0 143.5 207.0 193.0 124.0 569 130.0 225 40.00 50.00 80.00 100.0 . 168.0 156.0 224.0 .20S.0 134.0 616 140.0 252 50.00 63.00 100.0 . 125.0 187.0 173.0 247.0 229.0 14S.0 680 150.0 285 63.00 80.00 125.0 160.0 200.0 IS5.0 250.0 280.0 224.0 906 170.0 320 80.00 100.0 160.0 · 224.0 207.0 280.0 315.0 250.0. 1020 190.0 358 . 100.0 125.0 · 250.0 231.0 315.0 3".0 300.0 1115 212.0 ~ .. 125.0 160.0 · 280.0 259.0 355.0 400.0 315.0 1250 236.0 450 160.0 - . · 315.0 292.0 400.0 450.0 355.0 1485 260.0 505 (ME 14) ReprographyUnit,BIS,NewDeIbi,India Cranes, Lifting Chains and Its Related Equipment Sectional Committee, ME 14 FOREWORD This Indian Standard was adopted by the Bureau ofIndian Standards, after the draft fmalized by the Cranes LiftingChainsandItsRelatedEquipmentSectionalCommitteehadbeenapprovedbytheMechanicalEngineering Division Council. Pointhooks with shank forgeneral engineeringpurposes wascovered inIS3815 :1969point hooks with shank for capacities 63 to 160tonne, andpoint hooks with shank capacity up to 25 tonne - trapezoidal section were covered in IS 6294 : 1971 and IS 8610 : 1977 respectively. Since various tests given in these standards are identical innature, thereforeinordertomakethemmoreusers friendly; these standards have been amalgamated intoasinglestandard. Accordinglythis'standardshallsupersedeIS3815,IS6294andIS8610onceitispublished. This standarddoes not considered0.063 tonne to 0.5tonne capacity. The length above the neck which iscalled shank is left open to manufacturers to take into account the requirements for machining, threading and other parts holding the hooks. Theconstructiondetailsandthetypical dimensionaldetailsofthehooksarelefttothechoiceofthemanufacturers and the dimensional tolerances eliminated completely. Assistance has been drawn from ISO2374: 1983'Liftingappliances - Rangeofmaximum capacities forbasic models'. Thecompositionofthe Committee responsible forformulation ofthis standard isgiven inAnnex A. Forthe purpose ofdeciding whetheraparticular requirements ofthis standard iscomplied with, the final value, observed or calculated, expressing the result ofa test or analysis, shall be rounded off in accordance with IS 2 : 1960 'Rules for rouriding offnumerical values (revised)'. The number ofsignificantplaces retained in the rounded offvalue shouldbe the same asthat ofthe specified value inthis standard. IS 15560: 2005 Indian Standard POINT HOOKS WITH SHANK UP TO 160 TONNE SPECIFICATION 1SCOPE CastAnalysis CheckAnalysis (Percent), (Percent), 1.1This standardcoversbasicrequirements,materials Max Max and dimensions of mild steel, high tensile steel and alloy steel eye hooks for use, with Grade L(3), a) ForGradeLandMhooks Grade M(4), Grade S(6) and Grade T(8) chains, Sulphur 0.045 0.050 respectively. Phosphorus 0.040 0.045 1.1.1 This standard applies to the drop-forged and b) ForGradeSandThooks open-die forged eyehooks up to asafeworking load from 0.63 to 160tonne. Sulphur 0.035 0.040 Phosphorus 0.035 0.040 2 REFERENCES 5.3 The steel shall be made in conformity with a The following standards contain provisions which suitable de-oxidation practice to obtain an austenitic through reference inthistext, constituteprovisionsof grainsizeof5orfmerwhentested inaccordancewith this standard. At the time ofpublication the editions IS4748. indicated were valid. All standards are subject to revision, and parties to agreements based on this 5.3.1 This could be accomplished, for example, by standard areencouraged to investigatethe possibility ensuring that it contains sufficient aluminium, or an ofapplying the most recent editions ofthe standards equivalentelementtoenablethemanufactureofhooks indicated below: stabilizedagainststrainandage-embritt1ementduring IS No. Title service, a minimum of 0.02 percent of metallic aluminium isquoted for guidance. 1500: 1983 MethodforBrinellhardness testfor metallicmaterials (secondrevision) '5.4 Withintheabovelimitationsitistheresponsibility 1875: 1992 Carbon steel billets, blooms, slabs ofthe hook manufacturers to select steel, so that the andbars forforging (fifthrevision) finished hook, suitably heat-treated, meets the mechanical properties required by this specification. 4367: 1991 Alloy steel forgings for general Class1Aandclass3steelsofIS 1875maybeusedfor industrial use (firstrevision) GradeLandGradeMhooksrespectively. Alloy steel 4748: 1988 Methods for estimating average conforming to IS 4367 may be used for Grade Sand grain size ofmetal (firstrevision) GradeThooks. Anyothermaterialhavingequivalent 7847: 1975 General characteristics of lifting mechanicalproperties may alsobe used. hooks 6SHAPE AND DIMENSIONS 3 TERMINOLOGY Theshapeanddimensionsofhook shallbewithinthe Forthepurpose ofthisstandard, thedefmitions given maximum and minimum limits specified in Table 1 in IS7847 shall apply. and generally according toFig. 1. 4RATING In addition,the following requirements shall be met: a) Diameteroftheshank-Thereshallbepositive Thehooksshallberatedaccordingtothesafeworking tolerance when made by forging for the shank load for aparticular grade given inTable 1. toallowformachiningthediameteroftheshank 5 MATERIAL andthediameteratthetopofthe screwthread. Inallcasesafilletorradiousshallbemachined 5.1 The steelshallbeproduced bytheopenhearth or at the junction ofthe shank and the forged electric process or by any oxygentop blown process. diameter adjacentto the shank. 5.2 In its finished state, as supplied to the hook b) Threadedlength- The length ofthe screwed manufacturer, the steel shall be fully killed and shall portion ofthe shank shall not be less than the meet the maximum sulphur and phosphorus content nominal thread diameter. Ifthe shank and the limits as under: nut whichsecures itaredrilledto take afixing IS ,15560 :2005 orretainingpinorforanyother purposes, these b) Forliftingcapacity40tonneand50tonneproof shall remain a continuous length to the shank loadshall ~e 1.7times the lifting capacity, and engagedbythenutontheloadsideatleastequal c) Forliftingcapacity 63tonneto 160tonneproof to the diameterofthe shank. load shall be 1.25times the lifting capacity. c) The actual throatopening 'G' shall not exceed Prior to the application ofthe proofload, each hook 95 percent ofthe actual seat diameter 'D' of shallbeartwocentre punch marks atpositions'0' and the same hook. ,b'asshowninFig. 1. Thechangeindistancebetween d) Ifany safety latch is fitted, it shall be capable '0' and 'b' before applying proof load and after ofclosing over the maximum diameter ofthe removal ofthe proof load will be the amount of bar which can be admitted through the actual permanentdeformation upto0.5percentofthe actual opening 'GI' asindicatedbythe dotted lines in throat or the dimension between '0' and 'b'or the Fig. 1. 0.2romwhicheverishigher.Afterremovaloftheproof loadanddeterminationofthepermanentset,eachhook 7WORKMANSHIPANDFINISH shall be thoroughly examinedby a competentperson as Thehooksshallbefreefromdefectsandshallbecleanly and shallbeaccepted complyingwiththe standard, forged in one piece in such a manner that the macro ifno permanent deformation or visible defects are etchedflawlinesfollowthebody ofthehookexceptat observed onthe hook. theeye.Thefmishedhook shallbecleanandfreefrom 11DESTRUCTIONTEST coating ofany description, unless otherwisespecified bythe purchaser. 11.1 A sample hook shall be selected out ofa lot of every 50 hooks or less and tested to four times the 8HEATTREATMENT safe working load specified for the appropriate grade hook inTable 1. Theloadshallbeappliedasspecified 8.1 Allhooks shall,before prooftesting,besubjected in 7.3 ofIS 7847. The hook shall withstandany load to one ofthe following heat treatments: less than four times the safe working load, neither a) Normalizingbyheating toatemperaturewithin fracture nor so distort as to be incapable ofretaining 50°Cabove the upper critical point ofthe steel the load. used, followedby cooling in still air; or NOTES b) Hardening by heating to a temperature within ~ Itisnotnecessarytotestthehookuptoitsactualultimate 50°Cabove the upper critical point ofthe steel strengthformechanicalpropertiestobedemonstrated.Itis used,followedbyquenchinginoilorwaterand sufficientthatthe minimumultimate strength specified is tempering. . exceededandthehookdeformssignificantlyatthemaximum forceofthetest. 8.1.1 Normalizing treatmentshall be permitted 2 Lowercapacityupto2Stonneshankhooks,thedestruction for Grade L and Grade M hooks only. Grade Sand testshallbeofStimesthesafeworkingload. Grade T hooks shall be hardened.and tempered necessarily. 11.2 Micro-structure Test 8.1.2 The minimum hardness of hooks after heat After destruction test, a portion ofthe hook, which treatment, when tested accordingtothe method given has not undergone deformation, shall be taken and inIS 1500, shall beminimum 250 HB and minimum micro-structuretest shall be carried out to ensure that 350 HB for Grade S and Grade T respectively. This hooks have been given proper heat treatment. test shall be carried out on the hooks selected for 11.3 Hardness Testing destructive testing. HookofGrade SandGrade Tselectedfordestructive 8.2 Detailsofheattreatmentgiventothehooksduring testing shall be tested for hardness value as given manufacture shall be endorsed on the manufacturer's in 8.1.2. The hardness shall be checked at least test certificate. 10 mm away from the edge and 1 mm below the 9ULTRASONIC TEST surface. If required by the purchaser, the hooks shall be 12INSPECTION,CERTIFICATEOFTESTAND subjected to ultrasonictest fordetectionofcrack, etc. EXAMINATION 10PROOF TESTING 12.1 The representative ofthe purchaser shall have access to the works ofthe manufacturer at all Afterheattreatmentandotherprocessing,thefmished reasonable times for the purpose ofwitnessing the hooksshallbesubjectedtocarryouttestforfollowing specifiedtestsandinspectingthemachineandmethod proofloadtest accordingto lifting capacity (C ): of examination. The manufacturer shall give the p a) For lifting capacity up to 32 tonne proofload inspector, copiesofthereports ofthetestsmade inhis shall be two times the lifting capacity, presence. 2 IS 15560: 2005 12.2 The manufacturer shall supply a certificate of c) Manufacturer's identification mark. test and examination in accordance with 8.2 ancl8.3 ofIS 7847. 13.2 BIS Certification Marking 13 MARKING ThehookmayalsobemarkedwiththeStandardMark. , 13.2.1 The use ofthe StandardMark is governedby 13.1Providedthatthehookpassestheprooftest,each hook shall belegibly and indelibly marked'on parts theprovisionsofBureauofIndianStandardsAct,1986 nothighlystressed. Thismarkingshallincludeatleast and the Rules and Regulations made thereunder. The the following information: details ofconditions under which the license for the use of the Standard Mark may be granted to . a) Grade letter, manufacturersorproducersmay be obtainedfrom the. b) Safe working load, and Bureau ofIndian Standards. E I I I I I I I I I I +' I I I L Bs MAXIMUMDIAMETER OFBAR (SEE CLAUSE6.1d) FIG. 1 DIMENSIONSOFHOOK 3 IS 15560:2005 Table 1DimensionalCharacteristics ofShankHooks (Clause 6.1) AlldimensionsinmiUimetres. , 'C: Throat Throat Seat Section Shank LiftingCapacity in Opening Opening Dia Dia Tonnesfor Grade 2.9d 2.7d. Depth Width Height n Max Min Min Max Max Min Max t. M S T G G D H I- L E B, 1 m m (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) 0.63 0.80 1.25 1.60 20.60 19.20 27.00 30.50 20.60 122 25.00 49 0.80 1.00 1.60 2.00 23.20 21.60 30.40 34.40 23.20 130 26.50 54 1.00 1.25 2.00 2.50 26.10 24.30 34.20 38.70 26.10 139 28.00 57 1.25 1.60 2.50 3.20 29.00 27.00 38.00 43.00 29.00 149 30.00 60 1.60 2.00 3.20 4.00 31.90 29.70 41.80 43.70 31.90 158 31.50 64 2.00 2.50 4.00 5.00 34.80 32.40 45.60 51.60 34.80 170 33.50 68 2.50- 3.20 5.00 6.30 40.60 37.80 53.20 60.20 40.60 188 37.50 72 3.20 4.00 6.30 8.00 46.40 43.20 60.80 68.80 46.40 209 42.50 76 4.00 5.00 8.00 10.00 52.20 48.60 68.40 77.40 52.20 235 47.50 80 5.00 6.30 10.00 12.50 58.00 54.00 76.00 86.00 58.00 263 53.00 90 6.30 8.00 12.50 16.00 65.00 59.40 83.60 94.60 63.80 296 60.00 101 8.00 10.00 16.00 20.00 72.20 67.50 95.00 107:50 72.50 335 67.00 113 10.00 12.50 20.00 25.00 81.20 . 75.60 106.4 120.40 81.20 375 75.00 127 12.50 16.00 25.00 32.00 92.80 86.40 121.6 137.60 92.80 402 85.00 143 16.00 20.00 32.00 40.00 104.40 97.20 136.8 154.80 104.40 469 95.00 160 20.00 25.00 40.00 50.00 127.0 117.0 169.0 157.0 101.0 485 110.0 180 25.00 32.00 50.00 63.00 142.0 131.5 189.0 176.0 113.0 520 120.0 202 32.00 40.00 63.00 80.00 (55.0 143.5 207.0 193.0 124.0 569 130.0 225 40.00 50.00 80.00 100.0 168.0 156.0 224.0 208.0 134.0 616 140.0 252 50.00 63.00 100.0 125.0 187.0 173.0 247.0 229.0 148.0 680 150.0 285 63.00 80.00 125.0 160.0 200.0 185.0 250.0 280.0 224.0 906 170.0 320 - 80.00 100.0 160.0 224.0 207.0 280.0 315.0 250.0 1020 190.0 358 - - 100.0 125.0 250.0 231.0 315.0 355.0 380.0 1115 212.0 402 125.0 160.0 - - 280.0 259.0 355.0 400.0 315.0 1250 236.0 450 160.0 - - - 315.0 292.0 400.0 450.0 355.0 1485 260.0 505 4