1、BSI Standards PublicationBS ISO 24035:2014Belt drives V-belts and thecorresponding pulleys foragricultural machineries DimensionsBS ISO 24035:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 24035:2014.The UK participation in its preparation was entrusted t
2、o TechnicalCommittee MCE/10, Belts Sgtis the specified sheave groove spacing;Wdis the width of the belt;W2is the dimension of variable speed belts and hexagonal belts.Table 1 Nominal dimensions of cross-sectionsDimensions in millimetresBelt type Cross-sectionW WdT hbaSgtbClassical V-beltsHA HB HC HD
3、12 17 22 3211 14 19 278 11 14 209,9 13,0 16,2 22,415,88 19,05 24,40 36,53Wedge/ narrow V-beltsSPZ SPA SPB SPC 3V/9N 5V/15N 8V/25N10 13 17 22 9 15 258,5 11 14 198 10 14 18 8 14 2310,5 12,5 15,6 22,6 10,0 16,0 25,512,00 15,00 19,00 25,50 10,30 17,50 28,60Hexagonal V-beltsHAA HBB HCC13 17 2211 14 1910
4、13 17Variable speed V-beltsHI HJ HK HL HM HN HO HQ25,4 31,8 38,1 44,5 50,8 57,2 63,5 76,023,6 29,6 35,5 41,4 47,4 53,2 29,1 30,012,7 15,1 17,5 19,8 22,2 23,9 25,4V-ribbed belts PJ PL PMSee Figure 1 4 8 152,34 4,70 9,40NOTE The “H” prefix in the description of classical V-belts, hexagonal section V-b
5、elts, and variable speed V-belts indicates that belts can be manufactured to a higher specification to meet specific application criteria than standard industrial belt specifications.aClassical and wedge/narrow V-belts are also available in the joined or banded configuration as illustrated in Figure
6、 1.bSpecified groove spacing.6 Belt lengths6.1 V-belts, banded, or joined belts and variable speed belts for agricultural machinery traditionally identify length using “effective outside length” whereas similar belts for industrial machinery may use “datum length”.Effective outside length shall be m
7、easured at a position on the measuring pulleys where the groove top width is a closely specified value (see Table 5). ISO 2014 All rights reserved 3BS ISO 24035:2014ISO 24035:2014(E)Datum length shall be measured at a position within the grooves of the measuring pulleys where the datum width is a cl
8、osely specified value. The datum width is set to coincide approximately with the neutral axis of the belt section.There is a direct relationship between the belt effective outside length and its datum length. Please consult the belt manufacturer.6.2 Hexagonal section V-belts for agricultural machine
9、ry identify length using “effective length”.Effective length shall be measured on the same pulleys used for measuring classical section belt effective outside length and is close to the length of the belt at the widest point of the section.6.3 Ribbed belts identify length using “effective length”.Ef
10、fective length shall be measured at the outside diameter of the measuring pulleys and is therefore close to the belt length at the bottom of the grooves between the ribs.Table 2 Effective length rangesDimensions in millimetresClassical section V-beltsaWedge section V-beltsaVariable speed V-beltsHexa
11、gonal section V-beltsRibbed beltsSection Range Section Range Section Range Section Range Section RangeHA 635 to 3 300 SPZ 635 to 3 550 HI 1 020 to 3 175HAA 1 270 to 3 300PJ 455 to 2 540HB 760 to 7 620 SPA 732 to 4 500 HJ 1 270 to 4 065HBB 1 270 to 7 620PL 1 270 to 3 685HC 1 400 to 9 270SPB 1 250 to
12、8 000HK 1 525 to 4 570HCC 2 160 to 9 270PM 2 285 to 9 270HD 3 050 to 9 270SPC 2 000 to 12 500HL 1 780 to 5 0803V/9N 635 to 3 560 HM 2 030 to 5 0805V/15N 1 270 to 9 020HN 2 160 to 5 0808V/25N 2 54015 240HO 2 2855 080aIncludes joined or banded belts.Table 3 Effective length tolerance (all belt types)D
13、imensions in millimetresEffective length range Effective length toleranceUp to and including 1 300 10Over 1 300 and including 2 500 13Over 2 500 and including 3 150 16Over 3 150 and including 4 000 20Over 4 000 and including 5 000 25Over 5 000 and including 6 300 32Over 6 300 and including 8 000 40O
14、ver 8 000 and including 10 000 504 ISO 2014 All rights reservedBS ISO 24035:2014ISO 24035:2014(E)Table 4 Limits of difference in effective length for matching setsDimensions in millimetresEffective length rangeMatching limits for one setNormal belt constructionHigh-modulus belt constructionaUp to an
15、d including 1 375 4 2Over 1 375 up to and including 2 820 6 3Over 2 820 up to and including 6 000 10 5Over 6 000 up to and including 10 000 16 6NOTE Matched set tolerances are not applicable to joined V-belts or V-ribbed belts as they are designed to be a single unit.aExamples of high-modulus belt c
16、onstructions are those with reinforcing cords made from aramid, glass fibre or steel.Key1 total measuring forceFigure 2 Layout of measuring fixtureKey1 belt ride out2 variations to corner contoursFigure 3 Measuring belt ride out, V-belt ISO 2014 All rights reserved 5BS ISO 24035:2014ISO 24035:2014(E
17、)Key1 outside diameter2 diameter over ballsFigure 4 V-belt measuring pulley grooveKey1 belt ride outFigure 5 Measuring belt ride out, hexagonal V-belt6 ISO 2014 All rights reservedBS ISO 24035:2014ISO 24035:2014(E)Table 5 Data for use in measuring belt effective lengthDimensions in millimetresBelt c
18、ross-sectionPulley datum or outside diam eter 0,10Pulley effective circum-ferencePulley groove angle 0,25 Pulley groove top width bgDia meter ball or rod dB0,01Dia meter over balls or rods 0,10Groove depth hgmin.Total meas uring force per belt NMaximum ride position of belt with respect to top of gr
19、ooveNot joinedJoinedHA 95,5 300 34 13,0 12,5 108,2 12 300 2,5 4,5HB 143,2 450 34 16,5 15,5 157,7 14 450 2,5 5,0HC 222,8 700 34 22,4 21,0 242,2 19 850 2,5 6,5HD 318,3 1 000 36 32,8 30,5 346,6 26 1 800 3,0 7,0HAA 95,5 300 34 13,0 12,5 108,2 12 300 0,8HBB 143,2 450 34 16,5 15,5 157,7 14 450 0,8HCC 222,
20、8 700 34 22,4 21,0 242,2 19 850 0,8SPZ 95,5a300 38 9,91 11 360 1,1SPA 143,2a450 38 12,96 14 560 1,3SPB 191,0a600 38 16,45 17,5 900 1,4SPC 318,3a1 000 38 22,35 23,8 1 500 1,53V/9N-J 95,5 300 38 8,89 8,5 104,3 8,5 445 2,5 5,15V/15N-J 191,0 600 38 15,24 15,0 207,8 15,0 1000 3,0 6,48V/25N-J 318,3 1 000
21、38 25,40 25,0 346,3 25,1 2225 4,1 7,6HI 127,3 400 26 25,40 24,5 150,7 20 800 4,1HJ 159,2 500 26 31,75 30,5 187,8 23 1 300 4,1HK 191,0 600 26 38,10 36,5 224,8 26 1 800 4,6HL 222,8 700 26 44,45 42,5 261,7 29 2 500 5,1HM 254,6 800 26 50,80 48,5 298,7 32 3 300 5,1HN 286,5 900 26 57,00 54,5 336,4 34 3 30
22、0 5,6HO 318,3 1 000 26 63,00 60,0 372,1 37 3 300 5,6NOTE See Figure 2.aThese diameters are datum diameters. All other diameters in this column are outside diameters. ISO 2014 All rights reserved 7BS ISO 24035:2014ISO 24035:2014(E)Key1 diameter over ballsFigure 6 V-ribbed belt measuring grooveKey1 be
23、lt ride outFigure 7 Measuring belt ride out, V-ribbed beltTable 6 Data for use in measuring V-ribbed belt effective length and rideDimensions in millimetresCross-sectionPulley outside dia meter ref erencePulley effective circum-ferencePulley groove angle, degrees Pulley groove spacing SgtDiameter ba
24、ll or rod dB0,01Diameter over ball or rod 0,10Groove depth hgmin.Top radius rt+0,15 0,00Total measuring force per rib NMax. ride of belt with respect to top of groovePJ 95,5 300 40 2,340,031,50 97,5 2,06 0,20 50 2,50PL 159,2 500 40 4,700,054,00 163,5 4,92 0,40 200 5,60PM 254,6 800 40 9,40 7,00 259,2
25、 10,03 0,75 450 7,607 Belt length measurement method Manufactured belt dimensions7.1 Belt length shall be determined using a measuring fixture as illustrated in Figure 2, consisting of two pulleys of equal diameter having groove dimensions as specified in Tables 5 and 6. Both pulleys are 8 ISO 2014
26、All rights reservedBS ISO 24035:2014ISO 24035:2014(E)free to rotate. One of the pulleys has a fixed centre while the other can slide horizontally under the action of a measuring force applied horizontally through the sliding pulley centre.7.2 The apparatus should have a means of accurately measuring
27、 the distance between the pulley centres and applying the measuring force.7.3 The belt to be measured shall be mounted on the measuring pulleys and the measuring force shall be applied to the sliding pulley. The pulleys are rotated through at least two revolutions to seat it properly and to equalize
28、 the tension between the two spans of the belt.7.4 The belt length shall be determined by adding the circumference of one of the measuring pulleys to twice the centre distance between the two pulleys.7.5 The belt ride dimension is checked by measuring the distance from the top of the belt to the top
29、 of the measuring pulley groove (see Figures 3, 5 and 7). This dimension should be within the maximum shown in Tables 5 and 6.8 Specifications for pulleys used with V-belts and V-ribbed belts8.1 Make reference to the International Standards shown in Table 7 for the pulley groove dimensions appropria
30、te to the belt under consideration.Table 7Belt section International StandardClassical sections single beltsHA, HB, HC, HDISO 4183Classical sections joined beltsHA, HB, HC, HDISO 5291Narrow or wedge sections single or joinedSPZ, SPA, SPB, SPC3V/9N/9J, 5V/15N/15J, 8V/25N/25JISO 4183ISO 5290Hexagonal
31、sectionsHAA, HBB, HCCISO 4183V-ribbed sectionsPJ, PL, PMISO 9982NOTE 1 If there is any uncertainty concerning the latest issue of any of the International Standards mentioned, please consult with your national standards body.NOTE 2 It is recommended that the belt manufacturer be consulted where the
32、drive design necessitates special situations such as “quarter turn”. It might be important to use pulleys with deeper than normal grooves.NOTE 3 Pulley materials and constructions are detailed in the International Standards mentioned.8.2 Pulleys formed from sheet metal are permissible provided the g
33、roove dimensions are uniform throughout the circumference of the pulley, and that the thickness of the metal used is such that the groove profile will not change under the pressures exerted by the belt. ISO 2014 All rights reserved 9BS ISO 24035:2014ISO 24035:2014(E)Bibliography1 ISO 5289, Agricultu
34、ral machinery Endless hexagonal belts and groove sections of corresponding pulleys10 ISO 2014 All rights reservedBS ISO 24035:2014BS ISO 24035:2014ISO 24035:2014(E) ISO 2014 All rights reservedICS 65.060.01Price based on 10 pagesThis page deliberately left blankBSI is the national body responsible f
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