1、AN AMERICAN NATIONAL STANDARD ASME B29.28-2015High-StrengthChains for Power Transmission and Tension LinkagesASME B29.28-2015High-StrengthChains for PowerTransmission andTension LinkagesAN AMERICAN NATIONAL STANDARDTwo Park Avenue New York, NY 10016 USADate of Issuance: December 14, 2015This Standar
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11、l system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersTwo Park Avenue, New York, NY 10016-5990Copyright 2015 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword ivCommittee Roster vCorres
12、pondence With the B29 Committee . vi1 Scope 12 High-Strength Roller Chains . 13 References . 2Figure1 High-Strength Roller Chain and Components . 3Tables1 General Chain Dimensions, in. and lb . 41M General Chain Dimensions, mm and N . 42 Dimensional Limits for Interchangeability, in. . 52M Dimension
13、al Limits for Interchangeability, mm 5Nonmandatory AppendicesA Supplementary Information on Chain Selection for Drives . 7B Supplementary Information on Chain Selection for Tension Linkages 19iiiFOREWORDFor many years, several manufacturers have provided a line of high-strength chains for useon cert
14、ain construction equipment and other machinery that encounter high starting or shockloads. These high-strength chains generally have medium-carbon, through-hardened pins towithstand high shock loads and solid rollers to withstand very high tooth pressures. These chainsare normally offered only in he
15、avy series.In 2014, the ASME B29 Committee decided to develop a new standard to cover these high-strength chains. The new standard is intended to list limiting dimensions to ensure interchange-ability, to set forth minimum tensile strength and dynamic strength values, and to providesupplemental info
16、rmation concerning the application of high-strength chains. This Standardwas approved as an American National Standard on September 9, 2015.ivASME B29 COMMITTEEChains, Attachments, and Sprocketsfor Power Transmission and Conveying(The following is the roster of the Committee at the time of approval
17、of this Standard.)STANDARDS COMMITTEE OFFICERSC. G. Springman, ChairA. J. Binford, Vice ChairR. Richmond, SecretarySTANDARDS COMMITTEE PERSONNELM. A. Bergel, EBC, A Division of BDI USAA. J. Binford, IWIS Drive SystemsR. V. Dickey, Hitachi Maxco, Ltd.D. W. Egbert, Hitachi Maxco, Ltd.D. G. Fannin, Eme
18、rson Power TransmissionG. A. Hansen, Alternate, Emerson Power TransmissionW. C. Hall, Ramsey Products Corp.D. B. Holcomb, Alternate, Ramsey Products Corp.C. R. Langner, Timken Drives, LLCM. Manickam, Webster Industries, Inc.S. Rhoad, Alternate, Webster Industries, Inc.E. Pawlicki, Drives, Inc.R. A.
19、Reinfried, Conveyor Equipment Manufacturers AssociationR. Richmond, The American Society of Mechanical EngineersK. J. Smith, Ken Smith however, they shouldnot contain proprietary names or information.RequeststhatarenotinthisformatmayberewrittenintheappropriateformatbytheCommitteeprior to being answe
20、red, which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any interpretation when or if additionalinformation that might affect an interpretation is available. Further, persons aggrieved by aninterpretation may appeal to the cognizant ASME
21、Committee or Subcommittee. ASME does not“approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.Attending Committee Meetings. The B29 Standards Committee regularly holds meetingsand/or telephone conferences that are open to the public. Persons wishing to at
22、tend any meetingand/ortelephoneconferenceshouldcontacttheSecretaryoftheB29StandardsCommittee.FutureCommittee meeting dates and locations can be found on the Committee Page atgo.asme.org/B29committee.viASME B29.28-2015HIGH-STRENGTH CHAINS FOR POWER TRANSMISSION ANDTENSION LINKAGES1 SCOPEThis Standard
23、 covers roller chains that are specificallydesigned to withstand occasional high shock loads orhigh starting loads that are encountered in certain con-structionequipmentandothersevere-dutyapplications.WARNING: Chains covered in this Standard shall not be usedas the primary lifting member, or in the
24、direct drive line ofelevators,escalators,orsimilardevicesforliftinghumanpassen-gers unless applied in accordance with ASME A17.1. Chainscovered in this Standard shall not be used as climbing chains.2 HIGH-STRENGTH ROLLER CHAINS2.1 Nomenclaturehigh-strength roller chain: roller chain consisting of as
25、eries of alternately assembled roller links see Fig. 1,illustrations (a) and (b) and pin links see Fig. 1,illustration (c) and pin link in which the pins articulateinside the bushings and the rollers are free to turn onthebushings. Thepins andbushingsare pressfit intheirrespective link plates.roller
26、 link: link consisting of two roller link plates AA,two bushings BB, and two rollers CC.pin link: link consisting of two pin link plates EE, andtwo pins FF.NOTES:(1) Only heavy series high-strength roller chains are covered inthis Standard.(2) Multiple-strand high-strength roller chains are not cove
27、red inthis Standard.cotter-type connecting link: link consisting of a pin linkplate E, two cross-drilled pins GG, and a detachablepin link plate D, retained by two cotters HH. Cotter-type connecting links are used to connect the chain end-less on a drive, or to connect the ends of the chain totermin
28、al fittings in a tension linkage see Fig. 1, illustra-tion(d).Somemanufacturersmayusearetentionmeansother than, but equivalent to, cotters.NOTE: Offsetlinksforhigh-strengthrollerchainsarenotcoveredin this Standard.2.2 General ProportionsThe general proportions of high-strength roller chainsare the s
29、ame as for heavy series chains listed inASME B29.1.12.3 Numbering SystemFor chains covered in this Standard, the right-handdigit in the number is a zero. The numbers to the leftof the right-hand digit denote the number of eighths-of-an-inch in the chain pitch. The letters following thechain number s
30、hall be “HE,” with the letter “H” denot-ing heavy series and the letter “E” denoting high-tensilestrength.2.4 Chain Strength Requirements2.4.1 Minimum Ultimate Tensile Strength. Themini-mum ultimate tensile strength (M.U.T.S.) for chains cov-ered in this Standard is the minimum force at which anunus
31、ed, undamaged chain could fail when subjected toa single tensile loading test.WARNING: TheM.U.T.S.isNOTaworkingload!TheM.U.T.S.greatly exceeds the maximum force that may be applied to thechain in service.(a) Test Specimen. A length of chain, containing notless than five free pitches, shall be submit
32、ted for testing.(b) Test Procedure. A tensile force shall be appliedslowly, not to exceed 2.0 in./min (50.8 mm/min), in auniaxial direction, to the ends of the test specimen.(c) Conformance. Chains conforming to this Standardshall have a M.U.T.S. equal to or greater than the valuelisted for that spe
33、cific chain listed in Table 1 or 1M.WARNING: The tensile test is a destructive test! Even thoughthe chain might not visibly fail when subjected to the minimumultimate tensile force, it will have been damaged and will beunfit for service.2.4.2 Minimum Dynamic Strength. Only high-strength chains are s
34、ubject to the minimum dynamicstrength requirement; connecting links are not.WARNING: The dynamic test values are not valid characteris-tics for designing actual applications. Neither the specified val-ues nor the test results are to be interpreted as allowableworking loads.(a) Test Procedure. The ch
35、ain shall be tested accordingto the conformance test described in ASME B29.26.(b) Conformance. Chains covered in this Standardshall survive a conformance test at load listed for thesubject chain in Table 1 or 1M.WARNING: Thedynamictestisadestructivetest!Eventhoughthe chain might have survived the te
36、st without failure, it willhave been damaged and will be unfit for service.ASME B29.28-20152.5 Chain PreloadingChains covered in this Standard shall be preloadedduring manufacture by applying an axial tensile forceequal to a minimum of 30% of the M.U.T.S. listed forthe subject chain in Table 1 or 1M
37、.2.6 Chain Length2.6.1 Measuring Load. Measuringloadisthetensileforce under which the chain is to be measured. It isequal to 125 x (chain pitch in inches)2in pounds, witha minimum of 70 lb (0.31 kN), and a maximum of 1,000lb (4.45 kN). Length measurements are to be taken overa length of at least 12
38、in. (300 mm).2.6.2 Chain Length Tolerance. New chains, understandard measuring load, shall not be underlength.Overlength tolerance, under standard measuring load,is 0.001/(pitch, in inches)2+ 0.015, in./ft.2.7 General Chain DimensionsSee Tables 1 and 1M.22.8 Dimensional Limits for Interchangeability
39、See Tables 2 and 2M.3 REFERENCESThefollowingisalistofpublicationsreferencedinthisStandard. Unless otherwise specified, the standard(s)referenced shall be the most recently issued at the timeof order placement.ASME A17.1, Safety Code for Elevators and EscalatorsASME B29.1, Precision Power Transmissio
40、n RollerChains, Attachments, and SprocketsASME B29.26, Fatigue Testing Power TransmissionRoller ChainPublisher: The American Society of MechanicalEngineers (ASME), Two Park Avenue, New York,NY 10016-5990 (www.asme.org)ASME B29.28-2015Fig. 1 High-Strength Roller Chain and Components3ASME B29.28-2015T
41、able 1 General Chain Dimensions, in. and lbLPTDrDpLPTPPDp = pin diameterLPT = link plate thicknessDr= roller diameterP = chain pitchMaximumMaximum Nominal Width MinimumRoller Nominal Pin Link Plate Over Add for Length DynamicChain Pitch, Diameter, Width, Diameter, Thickness, Regular Connecting Toler
42、ance, Measuring M.U.T.S., Strength,Number PDrDpLPT Pin Pin Head in./ft Load, lb lb lb60HE 0.75 0.469 0.500 0.234 0.125 1.19 0.17 0.017 70 9,330 1,42080HE 1.00 0.625 0.625 0.312 0.156 1.47 0.20 0.016 125 15,600 2,400100HE 1.25 0.750 0.750 0.375 0.187 1.75 0.23 0.016 195 23,400 3,590120HE 1.50 0.875 1
43、.000 0.437 0.219 2.16 0.27 0.015 281 32,800 5,000140HE 1.75 1.000 1.000 0.500 0.250 2.32 0.30 0.015 383 43,600 6,560160HE 2.00 1.125 1.250 0.562 0.281 2.73 0.34 0.015 500 56,200 8,290180HE 2.25 1.406 1.406 0.687 0.312 3.04 0.37 0.015 633 69,900 10,200200HE 2.50 1.562 1.562 0.781 0.375 3.43 0.40 0.01
44、5 781 93,500 12,700240HE 3.00 1.875 1.875 0.937 0.500 4.38 0.47 0.015 1,000 149,000 18,300Table 1M General Chain Dimensions, mm and NMaximumMaximum Nominal Width MinimumRoller Nominal Pin Link Plate Over Add for Length DynamicChain Pitch, Diameter, Width, Diameter, Thickness, Regular Connecting Tole
45、rance, Measuring M.U.T.S., Strength,Number PDrDpLPT Pin Pin Head mm/m Load, N kN N60HE 19.05 11.91 12.70 5.94 3.18 30.23 4.32 1.417 311 41.5 6 33080HE 25.40 15.88 15.88 7.92 3.96 37.34 5.08 1.333 556 69.2 10 700100HE 31.75 19.05 19.05 9.53 4.75 44.45 5.84 1.333 867 104.0 16 000120HE 38.10 22.23 25.4
46、0 11.10 5.56 54.86 6.86 1.250 1 250 146.0 22 200140HE 44.45 25.40 25.40 12.70 6.35 58.93 7.62 1.250 1 704 194.0 29 200160HE 50.80 28.58 31.75 14.27 7.14 69.34 8.64 1.250 2 224 250.0 36 900180HE 57.15 35.71 35.71 17.45 7.92 77.22 9.40 1.250 2 816 311.0 45 200200HE 63.50 39.67 39.67 19.84 9.53 87.12 1
47、0.16 1.250 3 474 416.0 56 600240HE 76.20 47.63 47.63 23.80 12.70 111.25 11.94 1.250 4 448 664.0 81 4004ASME B29.28-2015Table 2 Dimensional Limits for Interchangeability, in.Chain Number 60HE 80HE 100HE 120HE 140HE 160HE 180HE 200HE 240HEChain Pitch 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 3.00Min. di
48、stance between 0.495 0.620 0.744 0.993 0.993 1.242 1.397 1.490 1.864roller link platesMax. width of roller link 0.765 0.956 1.146 1.464 1.530 1.846 2.067 2.295 2.935Min. distance between 0.767 0.958 1.148 1.466 1.532 1.848 2.069 2.297 2.937pin link platesMax. pin diameter 0.2346 0.3126 0.3756 0.4374
49、 0.5004 0.5626 0.6874 0.7815 0.9374Min. hole in bushing 0.2354 0.3134 0.3764 0.4386 0.5016 0.5634 0.6886 0.7823 0.9386Table 2M Dimensional Limits for Interchangeability, mmChain Number 60HE 80HE 100HE 120HE 140HE 160HE 180HE 200HE 240HEChain Pitch 19.05 25.40 31.75 38.10 44.45 50.80 57.15 63.50 76.20Min. distance between 12.57 15.75 18.90 25.22 25.22 31.55 35.48 37.85 47.35roller link platesMax. width of roller link 19.43 24.28 29.11 37.19 38.86 46.89 52.50 58.29 74.55Min. distance between 19.48 24.33 29.16 37.24 38.91 46.94 52.55 58.34 74.60pin link platesMax. pin diameter
