1、AN AMERICAN NATIONAL STANDARD ASME B29.100-2011(Revision of ASME B29.100-2002)Double-Pitch Roller Chains, Attachments, and SprocketsASME B29.100-2011(Revision of ASME B29.100-2002)Double-PitchRoller Chains,Attachments,and SprocketsAN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016 USA
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11、ew York, NY 10016-5990Copyright 2012 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword ivCommittee Roster . viCorrespondence With the B29 Committee vii1 Double-Pitch Roller Chains . 12 Attachments for Double-Pitch Conveyor Chains 23 Sprockets for Doub
12、le-Pitch Roller Chains 3Figures1 Double-Pitch Roller Chains . 52 Double-Pitch Roller Chain Components and Connecting Links 63 General Chain Dimensions . 74 Double-Pitch Offset Plates 75 Attachment Link Plates for Double-Pitch Conveyor Chains 86 Sprocket Tooth Section Profile 87 Sprocket Diameters, S
13、mall Roller and Power Transmission Series 98 Sprocket Diameters, Large Roller Series . 11Tables1 General Chain Dimensions, Measuring Loads, and Minimum Ultimate TensileStrengths, in. and lb . 121M General Chain Dimensions, Measuring Loads, and Minimum Ultimate TensileStrengths, mm and N 132 Ultimate
14、 Dimensional Limits for Interchangeability, in. 142M Ultimate Dimensional Limits for Interchangeability, mm 153 Dimensional Limits for Straight Link Plate Extension With One AttachmentHole 164 Dimensional Limits for Straight Link Plate Extension With Two AttachmentHoles . 175 Dimensional Limits for
15、Bent Link Plate Extension With One Attachment Hole . 186 Dimensional Limits for Bent Link Plate Extension With Two Attachment Holes 197 Dimensional Limits for Conveyor Chain With Extended Pins 208 Sprocket Tooth Section Profile Dimensions, in. 218M Sprocket Tooth Section Profile Dimensions, mm . 219
16、 Minus Tolerances on the Bottom or Caliper Diameters of Sprockets for VariousNumbers of Effective Teeth, in. . 229M Minus Tolerances on the Bottom or Caliper Diameters of Sprockets for VariousNumbers of Effective Teeth, mm . 2210 Sprocket Factors, Small Roller and Power Transmission Series . 2311 Sp
17、rocket Factors, Large Roller Series 26Nonmandatory AppendicesA Conveyor Chain Selection 27B Transmission Chain Selection . 30C Sprocket Cutter Selection . 39iiiFOREWORDFor the first edition of ASME B29.100, the B29 Standards Committee agreed to propose a draftstandard to consolidate and revise the f
18、ollowing three chain standards: ASME B29.1M, PrecisionPower Transmission Roller Chains, Attachments, and Sprockets; ASME B29.3M, Double-PitchPower Transmission Roller Chains and Sprockets; and ASME B29.4M, Double-Pitch ConveyorRoller Chains, Attachments, and Sprockets. The new standard was designate
19、d ASME B29.100-2002and was approved as an American National Standard on April 3, 2002.B29.3. For many years, roller chain manufacturers furnished for specific installations an econom-ical power transmission chain differing only in pitch from the standardized series of transmissionroller chains that
20、conformed to American Standard ASA B29.1. Such practice became so commonand the chains of such universal use that in 1948 the Roller Chain Technical Committee ofthe Association of Roller and Silent Chain Manufacturers, now known as the American ChainAssociation, developed standards that were submitt
21、ed for adoption as American Standards.This standard described a limited series of double-pitch power transmission roller chains thatsupplements the base chain series conforming to the standard B29.1. These chains differ fromthe base chains only in pitch, which is double that of the corresponding bas
22、e chain. Supplementaryinformation in Appendix A on speed and power transmission ratings indicated their specialusefulness for drives operating at slow to moderate speeds, with moderate loads and long centerdistances.ASME B29.3M-1994 incorporated a restatement of the definition of minimum ultimate te
23、nsilestrength, and minor changes in the values for maximum pin diameter and minimum bushinginner diameter. The dimensional changes were to allow a direct error-free conversion from U.S.Customary inch units to SI (Metric) units. Similar changes were made in the International StandardISO 1275. ASME B2
24、9.3M-1994 was approved by the American National Standards Institute onMarch 15, 1994.ASME B29.100-2002 included three significant modifications to B29.3: a revision to the minimumultimate tensile strength definition, the addition of the requirements for roller chain preloading,and the removal of som
25、e sprocket data that was identical to B29.1. The sprocket informationsections were revised to reference the appropriate sections of B29.1 sprocket data.B29.4. For many years, roller chain manufacturers have furnished a substantial volume ofprecision steel roller chains and sprockets of a limited ser
26、ies for specific conveying applications.Such chains consist of pins and bushings identical to American National Standard B29.1 transmis-sion roller chains; rollers identical to or, alternatively, approximately twice as large in diameteras those of such transmission roller chains; and link plates wit
27、h straight-edged contours, extendedin pitch to be double the pitch of those of the corresponding transmission roller chains conformingto the latest edition of B29.1. (Such chains are referred to in this Standard as base series chains.)These double-pitch steel conveyor chains have frequently been ass
28、embled with some parts ofmodified design to adapt the chains for use in conveying, elevating, or timing operations. Theparts most commonly modified are pin link plates, roller link plates, and pins.Previously, variation in link plate thickness, attachment link plate hole size and location,diameter a
29、nd length of extension pins, and sprocket details caused lack of interchangeability andtended to restrict users to one source of supply. For these reasons, the Association of Roller andSilent Chain Manufacturers began to develop the B29.4 standard in 1947. It was approved as anAmerican National Stan
30、dard on May 30, 1972, and supplemented B29.1.Nonmandatory Appendix A included suggestions on application and use of chains coveredby this Standard. The information on conveyor capacity ratings indicated the special usefulnessof these chains and attachment links for slow-speed conveyor applications.A
31、SME B29.4M-1994, which was approved by the American National Standards Institute onMarch 15, 1994, incorporated a restatement of the definition of minimum ultimate tensile strength,and minor changes in the values for maximum pitch diameter and minimum bushing innerdiameter. The dimensional changes w
32、ere to allow a direct error-free conversion fromivU.S. Customary units to SI (Metric) units. Similar changes were made in the International StandardISO 1275.ASME B29.100-2002 included three significant modifications to B29.4: a revision to the minimumultimate tensile strength definition, the additio
33、n that roller chains conforming to this standardshould be preloaded at the discretion of the manufacturer or by agreement between the manufac-turer and the user, and the removal of some sprocket data that was identical to B29.1. The sprocketinformation sections were revised to reference the appropri
34、ate sections of B29.1 sprocket data.In 2008, the B29 Standards Committee agreed to remove the portion of the ASME B29.100standard formerly known as ASME B29.1 from the incorporated standard. The former standardsASME B29.3 and ASME B29.4 were consolidated in ASME B29.100-2011. No changes were madeto
35、dimensional limits or capacities. Some text and several tables were merged to eliminateredundancies. ASME B29.100-2011 was approved as an American National Standard onNovember 16, 2011.Dimensional limits in this Standard are presented in U.S. Customary inchpound units. Com-panion tabulations are inc
36、luded to show conversions of the final limiting values into SI (Metric)units in accordance with ASME Guide SI-1, ASME Orientation and Guide for Use of SI (Metric)Units. Most formulas and relationships are intentionally presented only in U.S. Customary units,to preclude any ambiguity between them and
37、 the tabulated values.In most respects, ASME B29.100-2011 is harmonized with ISO 1275. However, the B29 StandardsCommittee decided to maintain the separate B29.100 standard for the following two reasons:(a) ISO permits only SI units to be shown in International Standards. The ANS chains andsprockets
38、 in this Standard were originally designed in U.S. Customary inchpound units. Conver-sion to SI units and rounding before making critical calculations introduce deviations that canbe detrimental to roller chain functioning.(b) The ANS tooth form in ASME B29.100 fits within the ISO 1275 sprocket toot
39、h form envelope,but the tooth form in ASME B29.100 is described in much more detail. Deviations from the ANStooth form, but within the ISO 1275 envelope, can be detrimental to chain performance.vASME B29 STANDARDS COMMITTEEChains, Attachments, and Sprocketsfor Power Transmission and Conveying(The fo
40、llowing is the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE OFFICERSC. G. Springman, ChairE. Pawlicki, Vice ChairG. Osolsobe, SecretarySTANDARDS COMMITTEE PERSONNELA. J. Binford, IWIS Drive SystemsL. Carrier, ConsultantD. W. Egbert, Hitachi Maxco, Ltd.R. V. D
41、ickey, Alternate, Hitachi Maxco, Ltd.D. G. Fannin, Emerson Power TransmissionD. Lindsay, Alternate, Emerson Power TransmissionW. C. Hall, Ramsey Products Corp.M. Manickam, Webster IndustriesS. Rhoad, Alternate, Webster IndustriesC. A. Norwood, Martin Sprocket however, they shouldnot contain propriet
42、ary names or information.Requests that are not in this format will be rewritten in this format by the Committee priorto being answered, which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any interpretation when or if additionalinformation
43、 that might affect an interpretation is available. Further, persons aggrieved by aninterpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not“approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.Attending Committee Meetings.
44、The B29 Standards Committee regularly holds meetings, whichare open to the public. Persons wishing to attend any meeting should contact the Secretary ofthe B29 Standards Committee.viiINTENTIONALLY LEFT BLANKviiiASME B29.100-2011DOUBLE-PITCH ROLLER CHAINS, ATTACHMENTS,AND SPROCKETS1 DOUBLE-PITCH ROLL
45、ER CHAINS1.1 NomenclatureThe following definitions are illustrated in Figs. 1and 2:connecting links (cotter pin type) Fig. 2, sketches (f) and(g): outside links consisting of a pin link plate, E;twopins, GG; a detachable pin link plate, D; and two cotterpins, HH.double-pitch conveyor roller chain, l
46、arge roller series Fig. 1,sketch (b): same as the small roller series (see below),except that the rollers are approximately twice the diam-eter. The large roller series is intended for use when theconveyed load is carried by the rollers.double-pitch conveyor roller chain, small roller series Fig. 1,
47、sketch (a): series of alternately assembled roller linksand pin links in which the pins articulate inside thebushings and the rollers are free to turn on the bushings.The pins and bushings are press-fitted into their respec-tive link plates. The pitch of the link plates is twice thatof link plates o
48、f the base series chain. Pin link plates androller link plates have identical straight-edged contours.Some chains have extra-thickness link plates that areintended for use when the conveyed load is carried bythe link plate edges.double-pitch power transmission roller chain Fig. 1, sketch(c): similar
49、 to double-pitch conveyor roller chain, smallroller series, except the link plate widths are usuallyreduced in the center to produce a figure-eight shape.This reduces the weight of the chain to make it moresuitable for power transmission applications.offset links (conveyor offset link large roller series, cotterpin type) Fig. 2, sketch (i): links consisting of two offsetlink plates, II; a bushing, B; a roller of the standardroller series, CS; a removable pin, J; and a cotter pin, H.offset links (conveyor offset link power transmission series,cotter pin type) Fig. 2,
