1、July 2012 Translation by DIN-Sprachendienst.English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 2
2、1.220.30; 53.040.20!$,n“1900975www.din.deDDIN ISO 1275Double-pitch precision roller chains, attachments and associated chainsprockets for transmission and conveyors (ISO 1275:2006)English translation of DIN ISO 1275:2012-07Langgliedrige Rollenketten, Anbauteile und Kettenrder fr Antriebs- undTranspo
3、rtzwecke (ISO 1275:2006)Englische bersetzung von DIN ISO 1275:2012-07Chanes de prcision rouleaux pas double, plaques-attaches et pignons dentscorrespondants pour transmission et manutention (ISO 1275:2006)Traduction anglaise de DIN ISO 1275:2012-07SupersedesDIN 8181:2000-04 andDIN 8196-2:1992-03www.
4、beuth.deDocument comprises 26 pagesIn case of doubt, the German-language original shall be considered authoritative.06.12 DIN ISO 1275:2012-07 2 A comma is used as the decimal marker. Contents Page National foreword .3 National Annex NA (informative) Figure 10 Diametral dimensions and tooth shape (c
5、orrected) .4 Introduction .5 1 Scope 6 2 Normative references 6 3 Transmission chains .6 3.1 Assembly and component nomenclature .6 3.2 Designation 9 3.3 Dimensions .9 3.4 Tensile testing 9 3.5 Preloading 9 3.6 Length validation 11 3.7 Marking 11 4 Conveyor chains . 13 4.1 General . 13 4.2 Nomenclat
6、ure 13 4.3 Designation . 13 4.4 Dimensions 13 4.5 Length validation 13 4.6 Marking 13 4.7 Attachments 15 5 Sprockets . 20 5.1 Nomenclature 20 5.2 Diametral dimensions and tooth shape . 20 5.3 Radial run-out 24 5.4 Axial run-out (wobble) 24 5.5 Pitch accuracy of sprocket teeth 24 5.6 Bore tolerance .
7、 25 5.7 Marking 25 Annex A (normative) Pitch circle diameters 26 DIN ISO 1275:2012-07 3 National foreword This standard includes ISO 1275:2006. The International Standard was prepared by Technical Committee ISO/TC 100 “Chains and chain sprockets for power transmission and conveyors”. The responsible
8、 German body involved in its preparation and which made the decision to have it translated into German and included in the body of German Standards, with the withdrawal of all relevant national standards, was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee), Working Comm
9、ittee NA 060-34-35 AA Stahlgelenkketten of Section Antriebstechnik. The work involved in the national adoption of the International Standard is a one-time affair, which saves considerable time and money as compared with the development of additional national standards on the same type of chain. The
10、Commitee has documented the fact that this standard is consistent with the ISO Standard. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. The present
11、document replaces DIN 8181 and DIN 8196-2. Where the International Standards referred to in Clause 2 and the Bibliography are not also DIN EN ISO or DIN ISO Standards with the same number, there are no national standards available. Amendments This standard differs from DIN 8181:2000-04 and DIN 8196-
12、2:1992-03 as follows: a) the scope (1) has been rendered more precise; b) requirements for marking (4.6) have been included; c) the tensile testing has been given in more detail (3.4); d) some variables for the definition of the chain dimensions have been modified; figures and text have been adjuste
13、d accordingly; e) all chain dimensions, except for the chain pitch, distance between inner plates, width over bearing pin and extended pin length for connecting link have been slightly modified; f) specifications relating to the bearing surface and weight per metre have been deleted; g) lower values
14、 of minimum tensile strength and measuring force have been specified; h) specifications regarding materials are no longer included; i) specifications for conveyor chains have been included, e.g. nomenclature, length validation, dimensions and attachments; j) some variables for the definition of the
15、sprocket dimensions have been modified; k) the tolerances of the root diameter have been specified in more detail; l) the tooth side relief has been modified; m) the tooth side radius has been changed to 0,5 p; n) a specification of the shroud fillet radius is no longer included; o) the marking of t
16、he sprockets has been supplemented by the ISO chain number. DIN ISO 1275:2012-07 4 Previous editions DIN 8181-1: 1948x-11 DIN 8181: 1972-03, 1984-03, 2000-04 DIN 8196-2: 1977-09, 1992-03 National Annex NA (informative) Figure 10 Diametral dimensions and tooth shape (corrected) Key 1 pitch polygon p
17、chordal pitch (equal to chain pitch) d pitch circle diameter d1roller diameter riroller seating radius roller seating angle retooth flank radius haheight of tooth above pitch polygon datip diameter dfroot diameter z number of teeth corresponding to number of links that can be wrapped around the spro
18、cket Sprocket tooth gap form (from DIN ISO 606) Introduction This International Standard has been established to cover a range of chains used in the majority of countries in the world by unifying dimensions, strengths and other data from current national standards. The principal feature of these cha
19、ins is their derivation from the ISO 606 series by using the standard round parts in links that are double the standard pitch. Chains have been adopted from the ANSI, BS and DIN double-pitch series to form a range from 25,4 mm to 101,6 mm pitch. Versions of chains are included with normal and with t
20、hicker plate materials, with the alternatives of smaller or larger rollers, as well as a range of attachments and sprockets. The dimensions of the chains provide for complete interchangeability of individual links, and the sprocket dimensions allow complete interchangeability of chains of the same p
21、itch and the same chain designation (either A or B series). DIN ISO 1275:2012-07 5Double-pitch precision roller chains, attachments and associated chain sprockets for transmission and conveyors 1 Scope This International Standard specifies requirements for double-pitch precision roller chains suitab
22、le for the mechanical transmission of power and for conveyors, together with those for their associated sprockets. It covers dimensions, tolerances, length measurement, preloading and minimum tensile strengths. These double-pitch chains have been derived from some of the short-pitch transmission pre
23、cision roller chains covered by ISO 606 having certain common dimensions but of double the pitch. The chains are intended for use under less onerous conditions with respect to speed and power transmitted than are the base chains from which they are derived. This International Standard primarily appl
24、ies to sprockets with 5 to 75 teeth inclusive (with intermediate numbers of teeth 5 1/2 to 74 1/2 inclusive). The preferred numbers of teeth are 7, 9, 10, 11, 13, 19, 27, 38 and 57. 2 Normative references The following referenced documents are indispensable for the application of this document. For
25、dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 286-2, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 606, Short-pi
26、tch transmission precision roller and bush chains, attachments and associated chain sprockets 3 Transmission chains 3.1 Assembly and component nomenclature The nomenclature of the chain assemblies and their component parts is illustrated in Figures 1 and 2. NOTE The figures do not define the actual
27、form of the chain plates. Figure 1 Chain assembly DIN ISO 1275:2012-07 6 Key 1 inner plate 2 roller 3 bush Key 1 outer plate 2 pin a) Inner link b) Outer link Key 1 outer plate 2 cottered connecting pin 3 cotter 4 detachable plate Key 1 outer plate 2 spring clip connecting pin 3 spring clip 4 detach
28、able plate c) Connecting pin with cottered pin d) Spring clip connecting link DIN ISO 1275:2012-07 7Key 1 roller 2 bush 3 cranked plate 4 cranked link pin 5 cotter e) Single cranked link Key 1 roller 2 inner plate 3 pin, riveted 4 cranked plate 5 bush f) Double cranked link NOTE 1 Plate dimensions a
29、re shown in Table 1. NOTE 2 Fasteners can be of various designs. Figures give examples. Figure 2 Types of link DIN ISO 1275:2012-07 8 3.2 Designation Double-pitch transmission precision roller chains are designated by the standard ISO chain numbers given in Table 1. These chain numbers have been obt
30、ained by taking the standard ISO chain number for the base chain (given in ISO 606) and adding the prefix 2. EXAMPLE Chain ISO 1275-208B 3.3 Dimensions Chains shall conform to the dimensions shown in Figure 3 and given in Table 1. Maximum and minimum dimensions are specified to ensure the interchang
31、eability of links produced by different makers of chain. They represent limits for interchangeability, but are not the manufacturing tolerances. In this International Standard, only double-pitch simplex chain dimensions are shown. 3.4 Tensile testing 3.4.1 General The minimum tensile strength is tha
32、t value which shall be exceeded when a tensile force is applied to a sample tested to destruction as defined in 3.4.2. This minimum tensile strength is not a working load but is intended primarily as a comparative figure between chains of various constructions. These testing requirements do not appl
33、y to cranked links, connecting links or chains with attachments as their tensile strength could be reduced. 3.4.2 Testing A tensile force shall be applied slowly to the ends of a chain length, containing at least five free pitches, by means of shackles permitting free movement on both sides of the c
34、hain centre-line, in the normal plane of articulation. Failure shall be considered to have occurred at the first point where increasing extension is no longer accompanied by increasing force, i.e. the summit of the force/extension diagram. The force at this point must exceed the minimum tensile stre
35、ngth stated in Table 1 and Table 2 . Tests in which failures occur adjacent to the shackles shall be disregarded. The tensile test shall be considered a destructive test. Even though a chain may not visibly fail when subjected to a force equivalent to the minimum tensile strength, it will have been
36、stressed beyond the yield point and will be unfit for service. 3.5 Preloading It is recommended that all chains be preloaded by applying a minimum tensile force equivalent to 30 % of the minimum tensile strength given in Table 1 and Table 2 . DIN ISO 1275:2012-07 9N1)N1)N1) National footnote: In the
37、 original English text, reference is only made to Table 1. This has been corrected in the German version and correspondingly in the English version. Table 1 Principal chain dimensions, measuring forces and tensile strengths (see Figure 3) PitchMaximum rollerdiameter(small)a Maximum rollerdiameter(la
38、rge) a Minimum width between inner platesMaximum bearing pin body diameterMinimum bush boreMinimum chain path depthMaximum plate depthMinimum cranked link b Maximum widthover inner linkMinimum width between outer platesMaximum widthover bearing pinMaximum additional width for joint fastenerc p d1d7b
39、1d2d3h1h2l1b2b3b4b7Measuring force Minimum tensilestrength ISOChain number mm N kN208A 25,4 7,92 15,88 7,85 3,98 4,00 12,33 12,07 6,9 11,17 11,31 17,8 3,9 120 13,9 208B 25,4 8,51 15,88 7,75 4,45 4,50 12,07 11,81 6,9 11,30 11,43 17,0 3,9 120 17,8 210A 31,75 10,16 19,05 9,40 5,09 5,12 15,35 15,09 8,4
40、13,84 13,97 21,8 4,1 200 21,8 210B 31,75 10,16 19,05 9,65 5,08 5,13 14,99 14,73 8,4 13,28 13,41 19,6 4,1 200 22,2 212A 38,1 11,91 22,23 12,57 5,96 5,98 18,34 18,10 9,9 17,75 17,88 26,9 4,6 280 31,3 212B 38,1 12,07 22,23 11,68 5,72 5,77 16,39 16,13 9,9 15,62 15,75 22,7 4,6 280 28,9 216A 50,8 15,88 28
41、,58 15,75 7,94 7,96 24,39 24,13 13 22,60 22,74 33,5 5,4 500 55,6 216B 50,8 15,88 28,58 17,02 8,28 8,33 21,34 21,08 13 25,45 25,58 36,1 5,4 500 60,0 220A 63,5 19,05 39,67 18,90 9,54 9,56 30,48 30,17 16 27,45 27,59 41,1 6,1 780 87,0 220B 63,5 19,05 39,67 19,56 10,19 10,24 26,68 26,42 16 29,01 29,14 43
42、,2 6,1 780 95,0 224A 76,2 22,23 44,45 25,22 11,11 11,14 36,55 36,20 19,1 35,45 35,59 50,8 6,6 1 110 125,0 224B 76,2 25,4 44,45 25,40 14,63 14,68 33,73 33,40 19,1 37,92 38,05 53,4 6,6 1 110 160,0 228B 88,9 27,94 30,99 15,90 15,95 37,46 37,08 21,3 46,58 46,71 65,1 7,4 1 510 200,0 232B 101,6 29,21 30,9
43、9 17,81 17,86 42,72 42,29 24,4 45,57 45,70 67,4 7,9 2 000 250,0 a Large rollers are principally for conveyor chains but are sometimes used on transmission chains; add suffix “L” to the chain number. b Cranked links are not recommended for use in highly stressed applications. c The actual dimensions
44、will depend on the type of fastener used but should not exceed the dimensions given and should be obtained by the purchaser from the manufacturer.DIN ISO 1275:2012-07 103.6 Length validation Measurement of chains shall take place after preloading but before lubricating. The standard length for measu
45、rement shall be a minimum of a) 610 mm for ISO chain numbers 208A to 210B inclusive, b) 1 220 mm for ISO chain numbers 212A to 232B inclusive. The chain shall be supported throughout its entire length and the measuring force given in Table 1 shall be applied. The measured length shall be the nominal
46、 length subject to tolerance of 0,150+%. The length accuracy of chains which have to work in parallel may be matched within closer tolerances. 3.7 Marking The chains shall be marked with the manufacturers name or trademark. The chain number quoted in Table 1 should be marked on the chain. DIN ISO 12
47、75:2012-07 11Key 1 single cranked link 2 chain section The chain path depth, h1, is the minimum depth of channel through which the assembled chain with small rollers will pass. The overall width of a chain with a joint fastener is given by b4+ b7for riveted pin end and fastener on one side, b4+ 1,6b
48、7for headed pin end and fastener on one side, and b4+ 2b7for fasteners on both sides. Figure 3 Chains DIN ISO 1275:2012-07 12 4 Conveyor chains 4.1 General Except where otherwise stated, the shapes, dimensions and test details for the chain and sprockets shall conform to the requirements of Clauses 3 and 5, respectively, substituting reference to Table 2 in place of Table 1 where appropriate. It is usual for chains used for conveyor purposes to have straight-sided (not waisted) side plates. Additionally, an alternative large roller
