SIST ISO 5296:2013
Synchronous belt drives - Belts with pitch codes MXL, XXL, XL, L, H, XH and XXH - Metric and inch dimensions
Synchronous belt drives - Belts with pitch codes MXL, XXL, XL, L, H, XH and XXH - Metric and inch dimensions
This International Standard specifies the principal characteristics of synchronous endless belts for use in synchronous belt drives for mechanical power transmission and where positive indexing or synchronization is required.
Transmissions synchrones par courroies - Courroies de symboles de pas MXL, XXL, XL, L, H, XH et XXH - Dimensions métriques et en inches
Jermenski pogoni - Zobati jermenski pogoni - Jermeni z oznakami MXL, XXL, XL, L, H, XH in XXH - Mere v milimetrih in colah
Ta mednarodni standard določa osnovne značilnosti jermenov za uporabo pri zobatih jermenskih pogonih za mehanski prenos moči in kjer sta potrebna pozitivno indeksiranje ali sinhronizacija.
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INTERNATIONAL ISO
STANDARD 5296
Second edition
2012-05-15
Synchronous belt drives — Belts with
pitch codes MXL, XXL, XL, L, H, XH and
XXH — Metric and inch dimensions
Transmissions synchrones par courroies — Courroies de symboles de pas
MXL, XXL, XL, L, H, XH et XXH — Dimensions métriques et en inches
Reference number
ISO 5296:2012(E)
©
ISO 2012
---------------------- Page: 1 ----------------------
ISO 5296:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 5296:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Pitch codes . 1
3 Dimensions and tolerances . 1
3.1 Tooth dimensions . 1
3.2 Belt pitch lengths and tolerances . 3
3.3 Widths and heights . 6
4 Belt designation . 8
4.1 Single-sided belts . 8
4.2 Double-sided belts . 9
4.3 Designation of pitch length of non-standardized lengths . 9
5 Pitch length measurement . 9
5.1 Measuring fixture . 9
5.2 Total measuring force . 11
Bibliography .12
© ISO 2012 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 5296:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also
take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 5296 was prepared by Technical Committee ISO/TC 41, Pulleys and belts (including veebelts), Subcommittee
SC 4, Synchronous belt drives.
This second edition of ISO 5296 cancels and replaces the first editions of ISO 5296-1:1989 and ISO 5296-2:1989.
iv © ISO 2012 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 5296:2012(E)
Synchronous belt drives — Belts with pitch codes MXL, XXL,
XL, L, H, XH and XXH — Metric and inch dimensions
1 Scope
This International Standard specifies the principal characteristics of synchronous endless belts for use in synchronous
belt drives for mechanical power transmission and where positive indexing or synchronization is required.
NOTE Synchronous belt drives have been known by various titles, for example timing belt drives, positive belt drives,
and gear belt drives.
The principal characteristics include:
a) nominal tooth dimensions;
b) length and width dimensions;
c) tolerances on these dimensions;
d) length-measurement specifications.
This International Standard is applicable to synchronous belt drives with pitch codes MXL, XXL, XL, L, H, XH
and XXH, in both metric and inch dimensions.
2 Pitch codes
The pitch codes and the corresponding belt pitches are given in Table 1.
Table 1 — Pitch codes
a
Belt pitch
Pitch code
mm in
MXL 2,032 0,080
XXL 3,175 0,125
XL 5,080 0,200
L 9,525 0,375
H 12,700 0,500
XH 22,225 0,875
XXH 31,750 1,250
a
Carried to the third decimal place because belt pitch is a defined value.
3 Dimensions and tolerances
3.1 Tooth dimensions
The nominal belt tooth dimensions are the same for one-sided and double-sided belts; they are given in Table 2
and are shown in Figures 1, 2 and 3.
Two types of double-sided synchronous belts are standardized. Type A (see Figure 2) has symmetrical teeth
and Type B (see Figure 3) has staggered teeth.
© ISO 2012 – All rights reserved 1
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ISO 5296:2012(E)
a
See Table 5.
Figure 1 — Tooth profile, one-sided
Figure 2 — Tooth profile, double-sided — Type A
Figure 3 — Tooth profile, double-sided — Type B
2 © ISO 2012 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 5296:2012(E)
Table 2 — Nominal tooth dimensions
s h r r
t r a
Pitch code 2β degrees
mm in mm in mm in mm in
MXL 40 1,14 0,045 0,51 0,02 0,13 0,005 0,13 0,005
XXL 50 1,73 0,068 0,76 0,03 0,2 0,008 0,3 0,012
XL 50 2,57 0,101 1,27 0,05 0,38 0,015 0,38 0,015
L 40 4,65 0,183 1,91 0,075 0,51 0,020 0,51 0,02
H 40 6,12 0,241 2,29 0,09 1,02 0,040 1,02 0,04
XH 40 12,57 0,495 6,35 0,25 1,57 0,062 1,19 0,047
XXH 40 19,05 0,750 9,53 0,375 2,29 0,090 1,52 0,06
3.2 Belt pitch lengths and tolerances
3.2.1 Single-sided belts
The belt pitch lengths and tolerances are given in Tables 3 and 4.
Table 3 — Pitch lengths and tolerances — XL, L, H, XH, XXH belt sections
Pitch length Tolerance Number of teeth for standard lengths
Belt length
XL L H XH XXH
designation
mm in mm in
(0,200) (0,375) (0,500) (0,875) (1,250)
60 152,40 6,000 ±0,41 ±0,016 30
70 177,80 7,000 ±0,41 ±0,016 35
80 203,20 8,000 ±0,41 ±0,016 40
90 228,60 9,000 ±0,41 ±0,016 45
100 254,00 10,000 ±0,41 ±0,016 50
110 279,40 11,000 ±0,46 ±0,018 55
120 304,80 12,000 ±0,46 ±0,018 60
124 314,33 12,375 ±0,46 ±0,018 33
130 330,20 13,000 ±0,46 ±0,018 65
140 355,60 14,000 ±0,46 ±0,018 70
150 381,00 15,000 ±0,46 ±0,018 75 40
160 406,40 16,000 ±0,51 ±0,020 80
170 431,80 17,000 ±0,51 ±0,020 85
180 457,20 18,000 ±0,51 ±0,020 90
187 476,25 18,750 ±0,51 ±0,020 50
190 482,60 19,000 ±0,51 ±0,020 95
200 508,00 20,000 ±0,51 ±0,020 100
210 533,40 21,000 ±0,61 ±0,024 105 56
220 558,80 22,000 ±0,61 ±0,024 110
225 571,50 22,500 ±0,61 ±0,024 60
© ISO 2012 – All rights reserved 3
---------------------- Page: 7 ----------------------
ISO 5296:2012(E)
Table 3 (continued)
Pitch length Tolerance Number of teeth for standard lengths
Belt length
XL L H XH XXH
designation
mm in mm in
(0,200) (0,375) (0,500) (0,875) (1,250)
230 584,20 23,000 ±0,61 ±0,024 115
240 609,60 24,000 ±0,61 ±0,024 120 64 48
250 635,00 25,000 ±0,61 ±0,024 125
255 647,70 25,500 ±0,61 ±0,024 68
260 660,40 26,000 ±0,61 ±0,024 130
270 685,80 27,000 ±0,61 ±0,024 72 54
285 723,90 28,500 ±0,61 ±0,024 76
300 762,00 30,000 ±0,61 ±0,024 80 60
322 819,15 32,250 ±0,66 ±0,026 86
330 838,20 33,000 ±0,66 ±0,026 66
345 876,30 34,500 ±0,66 ±0,026 92
360 914,40 36,000 ±0,66 ±0,026 72
367 933,45 36,750 ±0,66 ±0,026 98
390 990,60 39,000 ±0,66 ±0,026 104 78
420 1 066,80 42,000 ±0,76 ±0,030 112 84
450 1 143,00 45,000 ±0,76 ±0,030 120 90
480 1 219,20 48,000 ±0,76 ±0,030 128 96
507 1 289,05 50,750 ±0,81 ±0,032 58
510 1 295,40 51,000 ±0,81 ±0,032 136 102
540 1 371,60 54,000 ±0,81 ±0,032 144 108
560 1 422,40 56,000 ±0,81 ±0,032 64
570 1 447,80 57,000 ±0,81 ±0,032 114
600 1 524,00 60,000 ±0,81 ±0,032 160 120
630 1 600,20 63,000 ±0,86 ±0,034 126 72
660 1 676,40 66,000 ±0,86 ±0,034 132
700 1 778,00 70,000 ±0,86 ±0,034 140 80 56
750 1 905,00 75,000 ±0,91 ±0,036 150
770 1 955,80 77,000 ±0,91 ±0,036 88
800 2 032,00 80,000 ±0,91 ±0,036 160 64
840 2 133,60 84,000 ±0,97 ±0,038 96
850 2 159,00 85,000 ±0,97 ±0,038 170
900 2 286,00 90,000 ±0,97 ±0,038 180 72
980 2 489,20 98,000 ±1,02 ±0,040 112
1000 2 540,00 100,000 ±1,02 ±0,040 200 80
1100 2 794,00 110,000 ±1,07 ±0,042 220
4 © ISO 2012 – All rights reserved
---------------------- Page: 8 ----------------------
ISO 5296:2012(E)
Table 3 (continued)
Pitch length Tolerance Number of teeth for standard lengths
Belt length
XL L H
...
SLOVENSKI STANDARD
SIST ISO 5296:2013
01-december-2013
1DGRPHãþD
SIST ISO 5296-1:1997
SIST ISO 5296-2:1997
Jermenski pogoni - Zobati jermenski pogoni - Jermeni z oznakami MXL, XXL, XL,
L, H, XH in XXH - Mere v milimetrih in colah
Synchronous belt drives - Belts with pitch codes MXL, XXL, XL, L, H, XH and XXH -
Metric and inch dimensions
Transmissions synchrones par courroies - Courroies de symboles de pas MXL, XXL, XL,
L, H, XH et XXH - Dimensions métriques et en inches
Ta slovenski standard je istoveten z: ISO 5296:2012
ICS:
21.220.10 Jermenski pogoni in njihovi Belt drives and their
deli components
SIST ISO 5296:2013 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST ISO 5296:2013
---------------------- Page: 2 ----------------------
SIST ISO 5296:2013
INTERNATIONAL ISO
STANDARD 5296
Second edition
2012-05-15
Synchronous belt drives — Belts with
pitch codes MXL, XXL, XL, L, H, XH and
XXH — Metric and inch dimensions
Transmissions synchrones par courroies — Courroies de symboles de pas
MXL, XXL, XL, L, H, XH et XXH — Dimensions métriques et en inches
Reference number
ISO 5296:2012(E)
©
ISO 2012
---------------------- Page: 3 ----------------------
SIST ISO 5296:2013
ISO 5296:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 5296:2013
ISO 5296:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Pitch codes . 1
3 Dimensions and tolerances . 1
3.1 Tooth dimensions . 1
3.2 Belt pitch lengths and tolerances . 3
3.3 Widths and heights . 6
4 Belt designation . 8
4.1 Single-sided belts . 8
4.2 Double-sided belts . 9
4.3 Designation of pitch length of non-standardized lengths . 9
5 Pitch length measurement . 9
5.1 Measuring fixture . 9
5.2 Total measuring force . 11
Bibliography .12
© ISO 2012 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 5296:2013
ISO 5296:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also
take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 5296 was prepared by Technical Committee ISO/TC 41, Pulleys and belts (including veebelts), Subcommittee
SC 4, Synchronous belt drives.
This second edition of ISO 5296 cancels and replaces the first editions of ISO 5296-1:1989 and ISO 5296-2:1989.
iv © ISO 2012 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 5296:2013
INTERNATIONAL STANDARD ISO 5296:2012(E)
Synchronous belt drives — Belts with pitch codes MXL, XXL,
XL, L, H, XH and XXH — Metric and inch dimensions
1 Scope
This International Standard specifies the principal characteristics of synchronous endless belts for use in synchronous
belt drives for mechanical power transmission and where positive indexing or synchronization is required.
NOTE Synchronous belt drives have been known by various titles, for example timing belt drives, positive belt drives,
and gear belt drives.
The principal characteristics include:
a) nominal tooth dimensions;
b) length and width dimensions;
c) tolerances on these dimensions;
d) length-measurement specifications.
This International Standard is applicable to synchronous belt drives with pitch codes MXL, XXL, XL, L, H, XH
and XXH, in both metric and inch dimensions.
2 Pitch codes
The pitch codes and the corresponding belt pitches are given in Table 1.
Table 1 — Pitch codes
a
Belt pitch
Pitch code
mm in
MXL 2,032 0,080
XXL 3,175 0,125
XL 5,080 0,200
L 9,525 0,375
H 12,700 0,500
XH 22,225 0,875
XXH 31,750 1,250
a
Carried to the third decimal place because belt pitch is a defined value.
3 Dimensions and tolerances
3.1 Tooth dimensions
The nominal belt tooth dimensions are the same for one-sided and double-sided belts; they are given in Table 2
and are shown in Figures 1, 2 and 3.
Two types of double-sided synchronous belts are standardized. Type A (see Figure 2) has symmetrical teeth
and Type B (see Figure 3) has staggered teeth.
© ISO 2012 – All rights reserved 1
---------------------- Page: 7 ----------------------
SIST ISO 5296:2013
ISO 5296:2012(E)
a
See Table 5.
Figure 1 — Tooth profile, one-sided
Figure 2 — Tooth profile, double-sided — Type A
Figure 3 — Tooth profile, double-sided — Type B
2 © ISO 2012 – All rights reserved
---------------------- Page: 8 ----------------------
SIST ISO 5296:2013
ISO 5296:2012(E)
Table 2 — Nominal tooth dimensions
s h r r
t r a
Pitch code 2β degrees
mm in mm in mm in mm in
MXL 40 1,14 0,045 0,51 0,02 0,13 0,005 0,13 0,005
XXL 50 1,73 0,068 0,76 0,03 0,2 0,008 0,3 0,012
XL 50 2,57 0,101 1,27 0,05 0,38 0,015 0,38 0,015
L 40 4,65 0,183 1,91 0,075 0,51 0,020 0,51 0,02
H 40 6,12 0,241 2,29 0,09 1,02 0,040 1,02 0,04
XH 40 12,57 0,495 6,35 0,25 1,57 0,062 1,19 0,047
XXH 40 19,05 0,750 9,53 0,375 2,29 0,090 1,52 0,06
3.2 Belt pitch lengths and tolerances
3.2.1 Single-sided belts
The belt pitch lengths and tolerances are given in Tables 3 and 4.
Table 3 — Pitch lengths and tolerances — XL, L, H, XH, XXH belt sections
Pitch length Tolerance Number of teeth for standard lengths
Belt length
XL L H XH XXH
designation
mm in mm in
(0,200) (0,375) (0,500) (0,875) (1,250)
60 152,40 6,000 ±0,41 ±0,016 30
70 177,80 7,000 ±0,41 ±0,016 35
80 203,20 8,000 ±0,41 ±0,016 40
90 228,60 9,000 ±0,41 ±0,016 45
100 254,00 10,000 ±0,41 ±0,016 50
110 279,40 11,000 ±0,46 ±0,018 55
120 304,80 12,000 ±0,46 ±0,018 60
124 314,33 12,375 ±0,46 ±0,018 33
130 330,20 13,000 ±0,46 ±0,018 65
140 355,60 14,000 ±0,46 ±0,018 70
150 381,00 15,000 ±0,46 ±0,018 75 40
160 406,40 16,000 ±0,51 ±0,020 80
170 431,80 17,000 ±0,51 ±0,020 85
180 457,20 18,000 ±0,51 ±0,020 90
187 476,25 18,750 ±0,51 ±0,020 50
190 482,60 19,000 ±0,51 ±0,020 95
200 508,00 20,000 ±0,51 ±0,020 100
210 533,40 21,000 ±0,61 ±0,024 105 56
220 558,80 22,000 ±0,61 ±0,024 110
225 571,50 22,500 ±0,61 ±0,024 60
© ISO 2012 – All rights reserved 3
---------------------- Page: 9 ----------------------
SIST ISO 5296:2013
ISO 5296:2012(E)
Table 3 (continued)
Pitch length Tolerance Number of teeth for standard lengths
Belt length
XL L H XH XXH
designation
mm in mm in
(0,200) (0,375) (0,500) (0,875) (1,250)
230 584,20 23,000 ±0,61 ±0,024 115
240 609,60 24,000 ±0,61 ±0,024 120 64 48
250 635,00 25,000 ±0,61 ±0,024 125
255 647,70 25,500 ±0,61 ±0,024 68
260 660,40 26,000 ±0,61 ±0,024 130
270 685,80 27,000 ±0,61 ±0,024 72 54
285 723,90 28,500 ±0,61 ±0,024 76
300 762,00 30,000 ±0,61 ±0,024 80 60
322 819,15 32,250 ±0,66 ±0,026 86
330 838,20 33,000 ±0,66 ±0,026 66
345 876,30 34,500 ±0,66 ±0,026 92
360 914,40 36,000 ±0,66 ±0,026 72
367 933,45 36,750 ±0,66 ±0,026 98
390 990,60 39,000 ±0,66 ±0,026 104 78
420 1 066,80 42,000 ±0,76 ±0,030 112 84
450 1 143,00 45,000 ±0,76 ±0,030 120 90
480 1 219,20 48,000 ±0,76 ±0,030 128 96
507 1 289,05 50,750 ±0,81 ±0,032 58
510 1 295,40 51,000 ±0,81 ±0,032 136 102
540 1 371,60 54,000 ±0,81 ±0,032 144 108
560 1 422,40 56,000 ±0,81 ±0,032 64
570 1 447,80 57,000 ±0,81 ±0,032 114
600 1 524,00 60,000 ±0,81 ±0,032 160 120
630 1 600,20 63,000 ±0,86 ±0,034 126 72
660 1 676,40 66,000 ±0,86 ±0,034 132
700 1 778,00 70,000 ±0,86 ±0,034 140 80 56
750 1 905,00 75,000 ±0,91 ±0,036 150
770 1 95
...
NORME ISO
INTERNATIONALE 5296
Deuxième édition
2012-05-15
Transmissions synchrones par
courroies — Courroies de symboles de
pas MXL, XXL, XL, L, H, XH et XXH —
Dimensions métriques et en inches
Synchronous belt drives — Belts with pitch codes MXL, XXL, XL, L, H,
XH and XXH — Metric and inch dimensions
Numéro de référence
ISO 5296:2012(F)
©
ISO 2012
---------------------- Page: 1 ----------------------
ISO 5296:2012(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2012
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publication ne peut être reproduite ni utilisée sous
quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l’accord écrit
de l’ISO à l’adresse ci-après ou du comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Publié en Suisse
ii © ISO 2012 – Tous droits réservés
---------------------- Page: 2 ----------------------
ISO 5296:2012(F)
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Symboles de pas . 1
3 Dimensions et tolérances . 1
3.1 Dimensions des dents . 1
3.2 Longueurs primitives et tolérances . 3
3.3 Largeurs et hauteurs . 6
4 Désignation des courroies . 8
4.1 Courroies à simple denture . 8
4.2 Courroies à double denture . 9
4.3 Désignation de la longueur primitive des courroies de longueurs non normalisées . 9
5 Mesurage de la longueur primitive . 9
5.1 Appareil de mesurage . 9
5.2 Effort total de mesurage . 11
Bibliographie .12
© ISO 2012 – Tous droits réservés iii
---------------------- Page: 3 ----------------------
ISO 5296:2012(F)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes nationaux de
normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est en général confiée aux
comités techniques de l’ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du comité
technique créé à cet effet. Les organisations internationales, gouvernementales et non gouvernementales,
en liaison avec l’ISO participent également aux travaux. L’ISO collabore étroitement avec la Commission
électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI, Partie 2.
La tâche principale des comités techniques est d’élaborer les Normes internationales. Les projets de Normes
internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur publication
comme Normes internationales requiert l’approbation de 75 % au moins des comités membres votants.
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de droits
de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable de ne pas avoir
identifié de tels droits de propriété et averti de leur existence.
L’ISO 5296 a été élaborée par le comité technique ISO/TC 41, Poulies et courroies (y compris les courroies
trapézoïdales), sous-comité SC 4, Transmissions synchrones par courroies.
Cette deuxième édition de l’ISO 5296 annule et remplace l’ISO 5296-1:1989 et l’ISO 5296-2:1989.
iv © ISO 2012 – Tous droits réservés
---------------------- Page: 4 ----------------------
NORME INTERNATIONALE ISO 5296:2012(F)
Transmissions synchrones par courroies — Courroies de
symboles de pas MXL, XXL, XL, L, H, XH et XXH — Dimensions
métriques et en inches
1 Domaine d’application
La présente Norme internationale spécifie les caractéristiques principales des courroies synchrones sans
fin utilisées dans les transmissions synchrones pour la transmission mécanique de puissance lorsqu’une
synchronisation ou une indexation positive est requise.
NOTE Dans le passé, les transmissions synchrones par courroies ont été désignées de diverses façons, par exemple
transmissions à courroies de distribution, transmissions positives à courroie, transmissions à courroie chaîne.
Les caractéristiques principales comprennent:
a) les dimensions nominales des dents;
b) les longueurs et largeurs;
c) les tolérances sur ces longueurs et largeurs;
d) les spécifications de mesurage des longueurs.
La présente Norme internationale est applicable aux courroies synchrones de symboles de pas MXL, XXL, XL,
L, H, XH et XXH, de dimensions métriques et en inches.
2 Symboles de pas
Les symboles de pas et les pas de courroie correspondants sont donnés dans le Tableau 1.
Tableau 1 — Symboles de pas
a
Pas de la courroie
Symboles de pas
mm in
MXL 2,032 0,080
XXL 3,175 0,125
XL 5,080 0,200
L 9,525 0,375
H 12,700 0,500
XH 22,225 0,875
XXH 31,750 1,250
a
Donné avec trois décimales parce que le pas d’une courroie est une valeur absolue.
3 Dimensions et tolérances
3.1 Dimensions des dents
Les dimensions nominales des dents sont les mêmes pour les courroies à simple et à double denture; elles
sont données dans le Tableau 2 et représentées aux Figures 1, 2 et 3.
© ISO 2012 – Tous droits réservés 1
---------------------- Page: 5 ----------------------
ISO 5296:2012(F)
Deux types de courroies synchrones à double denture sont normalisés. Le type A (voir Figure 2) correspond
aux dents symétriques et le type B (voir Figure 3) aux dents décalées.
a
Voir Tableau 5.
Figure 1 — Profil de denture, simple denture
Figure 2 — Profil de denture, double denture (type A)
Figure 3 — Profil de denture, double denture (type B)
2 © ISO 2012 – Tous droits réservés
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ISO 5296:2012(F)
Tableau 2 — Dimensions nominales des dents
S h r r
t r a
Symbole de pas 2β degrés
mm in mm in mm in mm in
MXL 40 1,14 0,045 0,51 0,02 0,13 0,005 0,13 0,005
XXL 50 1,73 0,068 0,76 0,03 0,2 0,008 0,3 0,012
XL 50 2,57 0,101 1,27 0,05 0,38 0,015 0,38 0,015
L 40 4,65 0,183 1,91 0,075 0,51 0,020 0,51 0,02
H 40 6,12 0,241 2,29 0,09 1,02 0,040 1,02 0,04
XH 40 12,57 0,495 6,35 0,25 1,57 0,062 1,19 0,047
XXH 40 19,05 0,750 9,53 0,375 2,29 0,090 1,52 0,06
3.2 Longueurs primitives et tolérances
3.2.1 Courroies à simple denture
Les longueurs primitives des courroies et les tolérances sont données dans les Tableaux 3 et 4.
Tableau 3 — Longueurs primitives et tolérances — Sections de courroie XL, L, H, XH, XXH
Nombre de dents pour les longueurs
Longueur primitive Tolérance
Désignation
normalisées
de longueur de
XL L H XH XXH
courroie
mm in mm in
(0,200) (0,375) (0,500) (0,875) (1,250)
60 152,40 6,000 ±0,41 ±0,016 30
70 177,80 7,000 ±0,41 ±0,016 35
80 203,20 8,000 ±0,41 ±0,016 40
90 228,60 9,000 ±0,41 ±0,016 45
100 254,00 10,000 ±0,41 ±0,016 50
110 279,40 11,000 ±0,46 ±0,018 55
120 304,80 12,000 ±0,46 ±0,018 60
124 314,33 12,375 ±0,46 ±0,018 33
130 330,20 13,000 ±0,46 ±0,018 65
140 355,60 14,000 ±0,46 ±0,018 70
150 381,00 15,000 ±0,46 ±0,018 75 40
160 406,40 16,000 ±0,51 ±0,020 80
170 431,80 17,000 ±0,51 ±0,020 85
180 457,20 18,000 ±0,51 ±0,020 90
187 476,25 18,750 ±0,51 ±0,020 50
190 482,60 19,000 ±0,51 ±0,020 95
200 508,00 20,000 ±0,51 ±0,020 100
210 533,40 21,000 ±0,61 ±0,024 105 56
220 558,80 22,000 ±0,61 ±0,024 110
225 571,50 22,500 ±0,61 ±0,024 60
© ISO 2012 – Tous droits réservés 3
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ISO 5296:2012(F)
Tableau 3 (suite)
Nombre de dents pour les longueurs
Longueur primitive Tolérance
Désignation
normalisées
de longueur de
XL L H XH XXH
courroie
mm in mm in
(0,200) (0,375) (0,500) (0,875) (1,250)
230 584,20 23,000 ±0,61 ±0,024 115
240 609,60 24,000 ±0,61 ±0,024 120 64 48
250 635,00 25,000 ±0,61 ±0,024 125
255 647,70 25,500 ±0,61 ±0,024 68
260 660,40 26,000 ±0,61 ±0,024 130
270 685,80 27,000 ±0,61 ±0,024 72 54
285 723,90 28,500 ±0,61 ±0,024 76
300 762,00 30,000 ±0,61 ±0,024 80 60
322 819,15 32,250 ±0,66 ±0,026 86
330 838,20 33,000 ±0,66 ±0,026 66
345 876,30 34,500 ±0,66 ±0,026 92
360 914,40 36,000 ±0,66 ±0,026 72
367 933,45 36,750 ±0,66 ±0,026 98
390 990,60 39,000 ±0,66 ±0,026 104 78
420 1 066,80 42,000 ±0,76 ±0,030 112 84
450 1 143,00 45,000 ±0,76 ±0,030 120 90
480 1 219,20 48,000 ±0,76 ±0,030 128 96
507 1 289,05 50,750 ±0,81 ±0,032 58
510 1 295,40 51,000 ±0,81 ±0,032 136 102
540 1 371,60 54,000 ±0,81 ±0,032 144 108
560 1 422,40 56,000 ±0,81 ±0,032 64
570 1 447,80 57,000 ±0,81 ±0,032 114
600 1 524,00 60,000 ±0,81 ±0,032 160 120
630 1 600,20 63,000 ±0,86 ±0,034 126 72
660 1 676,40 66,000 ±0,86 ±0,034 132
700 1 778,00 70,000 ±0,86 ±0,034 140 80 56
750 1 905,00 75,000 ±0,91 ±0,036 150
770 1 955,80 77,000 ±0,91 ±0,036 88
800 2 032,00 80,000 ±0,91 ±0,036 160 64
840 2 133,60 84,000 ±0,97 ±0,038 96
850 2 159,00 85,000 ±0,97 ±0,038 170
900 2 286,00 90,000 ±0,97 ±0,038 180 72
980 2 489,20 98,000 ±1,02 ±0,040 112
1 000 2 540,00 100,000 ±1,02 ±0,040 200 80
1 100 2 794,00 110,000 ±1,07 ±0,042 220
4 © ISO 2012 – Tous droits réservés
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ISO 5296:2012(F)
Tableau 3 (suite)
Nombre de dents pour les longueurs
Longueur primitive Tolérance
Désignation
normalisées
de longueur de
XL L H XH XXH
courroie
mm in mm in
(0,200) (0,375) (0,500) (0,875) (1,250)
1 120 2 844,80 112,000 ±1,12 ±0,044 128
1 200 3 048,00 120,000 ±1,12 ±0,044 96
1 250 3 175,00 125,000 ±1,17 ±0,046 250
1 260 3 200,40 126,000 ±1,17 ±0,046 144
1 400 3 556,00 140,000 ±1,22 ±0,048 280 160 112
1 540
...
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