SIST ISO 4184:1997
(Main)Belt drives -- Classical and narrow V-belts -- Lengths in datum system
Belt drives -- Classical and narrow V-belts -- Lengths in datum system
Specifies for V-belts of sections Y, Z, A, B, C, D, E, SPZ, SPA, SPB, and SPC: the recommended datum lengths, the tolerances for datum lengths, the conditions for measuring the datum length.
Transmissions par courroies -- Courroies trapézoïdales classiques et étroites -- Longueurs dans le système de référence
La présente Norme internationale prescrit pour les courroies trapézoïdales classiques et étroites de sections Y (pour gorges de poulies de 5,3 mm de largeur de référence), Z (pour gorges de poulies de 8,5 mm de largeur de référence), A (pour gorges de poulies de 11 mm de largeur de référence), B (pour gorges de poulies de 14 mm de largeur de référence), C (pour gorges de poulies de 19 mm de largeur de référence), D (pour gorges de poulies de 27 mm de largeur de référence), E (pour gorges de poulies de 32 mm de largeur de référence), SPZ (pour gorges de poulies de 8,5 mm de largeur de référence), SPA (pour gorges de poulies de 11 mm de largeur de référence), SPB (pour gorges de poulies de 14 mm de largeur de référence), SPC (pour gorges de poulies de 19 mm de largeur de référence): -- les longueurs de référence recommandées; -- les tolérances sur les longueurs de référence; -- les variations d'entraxe; -- les conditions de contrôle de la longueur de référence et de la variation d'entraxe. Les courroies trapézoïdales de sections Y, Z, A, B, C, D, E sont appelées courroies trapézoïdales classiques, et celles de sections SPZ, SPA, SPB et SPC, courroies trapézoïdales étroites. Il est important que les courroies étroites ne 100soient pas utilisées avec des poulies destinées aux seules courroies classiques.
Jermenski pogoni - Običajni in ozki klinasti jermeni - Dolžine v osnovnem sistemu
General Information
Relations
Overview
ISO 4184:1992 specifies how to define and measure datum lengths for classical and narrow V‑belts used in belt drives. It covers V‑belt sections Y, Z, A, B, C, D, E (classical) and SPZ, SPA, SPB, SPC (narrow), giving the recommended datum lengths, manufacturing and matching tolerances, measurement conditions, and permissible centre‑distance variations. The standard supports consistent designation, marking and quality control of V‑belts across manufacturers and users.
Key topics
- Scope and belt sections: Classical sections Y–E and narrow sections SPZ–SPC, with associated datum groove widths for matching pulleys.
- Standard datum lengths: Nominal datum lengths selected from preferred‑number series (R20 / R10); tables list standard lengths for narrow belts (Table 1) and classical belts (Annex A/Table A.1).
- Tolerances on datum lengths: Manufacturing tolerances (Table 2) and set/matching tolerances for multiple‑groove drives (Table 3) are specified to control length variation within production and belt sets.
- Centre‑distance variations: Permissible variations for centre distances are provided (Table 4) to ensure acceptable performance and load sharing.
- Measurement method: Procedure for checking datum length and centre‑distance variation: mount the belt on two identical pulleys with specified datum circumference, apply the measuring force (Table 5), rotate the belt to seat it, and measure axis distance. The standard includes the formula relating datum length to pulley circumference and axis distance.
- Designation and marking: Physical dimensions are designated by section and datum length (e.g., A 1550, SPA 1250). Belts must be durably marked on the outer non‑working face.
Applications and users
ISO 4184 is essential for:
- Belt manufacturers and mould/tooling planners (to produce belts to standard datum lengths)
- Pulley and drive designers (to ensure compatible pulley groove profiles and datum widths)
- Maintenance and reliability engineers (for correct replacement belts and set matching)
- OEMs and procurement/specification writers (to specify belts unambiguously)
- Test labs and quality control teams (for length measurement and conformity checks)
Using ISO 4184 helps ensure interchangeability, reliable power transmission, predictable belt life and correct centre‑distance assembly in machinery across industrial sectors.
Related standards
- ISO 4183 - Belt drives - Classical and narrow V‑belts - Grooved pulleys (datum‑width system)
- ISO 1081 - Drives using V‑belts and grooved pulleys - Terminology
- ISO 9608 - V‑belts - Uniformity and centre distance variation - Test methods
- ISO 3 - Preferred numbers
Keywords: ISO 4184, V‑belts, datum length, classical V‑belts, narrow V‑belts, belt tolerances, centre distance variation, grooved pulleys, belt designation.
Frequently Asked Questions
SIST ISO 4184:1997 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Belt drives -- Classical and narrow V-belts -- Lengths in datum system". This standard covers: Specifies for V-belts of sections Y, Z, A, B, C, D, E, SPZ, SPA, SPB, and SPC: the recommended datum lengths, the tolerances for datum lengths, the conditions for measuring the datum length.
Specifies for V-belts of sections Y, Z, A, B, C, D, E, SPZ, SPA, SPB, and SPC: the recommended datum lengths, the tolerances for datum lengths, the conditions for measuring the datum length.
SIST ISO 4184:1997 is classified under the following ICS (International Classification for Standards) categories: 21.220.10 - Belt drives and their components. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ISO 4184:1997 has the following relationships with other standards: It is inter standard links to ISO 4184:1980. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST ISO 4184:1997 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-1997
-HUPHQVNLSRJRQL2ELþDMQLLQR]NLNOLQDVWLMHUPHQL'ROåLQHYRVQRYQHPVLVWHPX
Belt drives -- Classical and narrow V-belts -- Lengths in datum system
Transmissions par courroies -- Courroies trapézoïdales classiques et étroites --
Longueurs dans le système de référence
Ta slovenski standard je istoveten z: ISO 4184:1992
ICS:
21.220.10 Jermenski pogoni in njihovi Belt drives and their
deli components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
ISO
INTERNATIONAL
STANDARD
Second edition
1992-12-15
Corrected and reprinted
1993-05-15
- Classical and narrow
Belt drives
- Lengths in datum System
V-belts
- Courroies trap6zoidales classiques et
Transmissions par courroies
6 troites - Longueurs dans Ie Systeme de kfbrence
Reference number
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. Esch 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.
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.
International Standard ISO 4184 was prepared by Technical Committee
lSO/TC 41, Pulleys and belts (including veebelts), Sub-Committee SC 1,
Veebelts and grooved pulleys.
This second edition cancels and replaces the first edition
(ISO 4184:1980), which has been technically revised.
Annex A of this International Standard is for information only.
0 ISO 1992
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronie or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
INTERNATIONAL STANDARD
- Classical and narrow V-belts - Lengths
Belt drives
in datum System
The V-belts of sections Y, Z, A, B, C, D, E are called
1 Scope
classical V-belts and those of sections SPZ, SPA, SPB
and SPC are called narrow V-belts.
This International Standard specifies, for classical and
narrow V-belts of sections
lt is important that narrow belts are not used with
pulleys uniquely designed for classical belts.
with datum width
Y (for groove Profile
53 m-n),
with datum width
Z (for groove Profile
83 mm),
2 Normative references
(for groove Profile with datum width 11 mm),
A
The following Standards contain provisions which,
(for groove Profile with datum width 14 mm),
B
through reference in this text, constitute provisions
of this International Standard. At the time of publi-
C (for groove Profile with datum width 19 mm),
cation, the editions indicated were valid. All Standards
are subject to revision, and Parties to agreements
D (for groove Profile with datum width 27 mm),
based on this International Standard are encouraged
(for groove Profile with datum width 32 mm), to investigate the possibility of applying the most re-
E
cent editions of the Standards indicated below.
SPZ (for groove Profile with datum width
Members of IEC and ISO maintain registers of cur-
83 rm),
rently valid International Standards.
(for groove Profile with datum width 11 mm),
SPA
ISO 3:1973, Preferred numbers - Series of preferred
numbers.
SPB (for groove Profile with datum width 14 mm),
(for groove Profile with datum width 19 mm): ISO 1081: 1980, Drives using V-belts and grooved
SPC
pulleys - Terminology.
- the recommended datum lengths;
ISO 4183:1989, Belt drives - Classical and narrow
V-belts - Grooved pulleys (System based on datum
- the tolerantes for datum lengths;
width).
- the centre distance variations;
ISO 9608: 1988, V-belts - Uniformity of belts -
- the conditions for measuring the datum length and Cen tre dis tance Variation - Specifica tions and test
me thod.
the centre distance Variation.
3 Definitions
For the purposes of this International Standard, the
terms and Symbols relating to drives using V-belts (i.e.
belts and grooved pulleys) defined in ISO 1081 apply.
-
Table 1 Standard datum lengths of narrow
V-belts
4 Datum length, Ld
Distribution according to the
I
sections ons
Ld Ld
SPZ SPZ SPA SPB SPB SPC SPC
4.1 The Standard datum lengths are the datum
lengths under tension measured under the conditions
630 630
specified in 7.1.
+
710 710 + +
800 800 + +
900 900 + +
1 1 000 000 + +
4.2 The nominal values of the Standard datum
1 1 120 120 + +
lengths of V-belts, expressed in millimetres, have
1 1 250 250 + +
been selected from the R 20 series of preferred
numbers, in accordance with ISO 3.
1 1 400 400 + +
1 1 600 600 + +
a) Classical V-belts - Sections Y, 2, A, B, C, D, E
1 1 800 800 + +
Datum lengths of V-belts of section Y are given in 2 2 000 000 + +
table A.
...
ISO
INTERNATIONAL
STANDARD
Second edition
1992-12-15
Corrected and reprinted
1993-05-15
- Classical and narrow
Belt drives
- Lengths in datum System
V-belts
- Courroies trap6zoidales classiques et
Transmissions par courroies
6 troites - Longueurs dans Ie Systeme de kfbrence
Reference number
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. Esch 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.
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.
International Standard ISO 4184 was prepared by Technical Committee
lSO/TC 41, Pulleys and belts (including veebelts), Sub-Committee SC 1,
Veebelts and grooved pulleys.
This second edition cancels and replaces the first edition
(ISO 4184:1980), which has been technically revised.
Annex A of this International Standard is for information only.
0 ISO 1992
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronie or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
INTERNATIONAL STANDARD
- Classical and narrow V-belts - Lengths
Belt drives
in datum System
The V-belts of sections Y, Z, A, B, C, D, E are called
1 Scope
classical V-belts and those of sections SPZ, SPA, SPB
and SPC are called narrow V-belts.
This International Standard specifies, for classical and
narrow V-belts of sections
lt is important that narrow belts are not used with
pulleys uniquely designed for classical belts.
with datum width
Y (for groove Profile
53 m-n),
with datum width
Z (for groove Profile
83 mm),
2 Normative references
(for groove Profile with datum width 11 mm),
A
The following Standards contain provisions which,
(for groove Profile with datum width 14 mm),
B
through reference in this text, constitute provisions
of this International Standard. At the time of publi-
C (for groove Profile with datum width 19 mm),
cation, the editions indicated were valid. All Standards
are subject to revision, and Parties to agreements
D (for groove Profile with datum width 27 mm),
based on this International Standard are encouraged
(for groove Profile with datum width 32 mm), to investigate the possibility of applying the most re-
E
cent editions of the Standards indicated below.
SPZ (for groove Profile with datum width
Members of IEC and ISO maintain registers of cur-
83 rm),
rently valid International Standards.
(for groove Profile with datum width 11 mm),
SPA
ISO 3:1973, Preferred numbers - Series of preferred
numbers.
SPB (for groove Profile with datum width 14 mm),
(for groove Profile with datum width 19 mm): ISO 1081: 1980, Drives using V-belts and grooved
SPC
pulleys - Terminology.
- the recommended datum lengths;
ISO 4183:1989, Belt drives - Classical and narrow
V-belts - Grooved pulleys (System based on datum
- the tolerantes for datum lengths;
width).
- the centre distance variations;
ISO 9608: 1988, V-belts - Uniformity of belts -
- the conditions for measuring the datum length and Cen tre dis tance Variation - Specifica tions and test
me thod.
the centre distance Variation.
3 Definitions
For the purposes of this International Standard, the
terms and Symbols relating to drives using V-belts (i.e.
belts and grooved pulleys) defined in ISO 1081 apply.
-
Table 1 Standard datum lengths of narrow
V-belts
4 Datum length, Ld
Distribution according to the
I
sections ons
Ld Ld
SPZ SPZ SPA SPB SPB SPC SPC
4.1 The Standard datum lengths are the datum
lengths under tension measured under the conditions
630 630
specified in 7.1.
+
710 710 + +
800 800 + +
900 900 + +
1 1 000 000 + +
4.2 The nominal values of the Standard datum
1 1 120 120 + +
lengths of V-belts, expressed in millimetres, have
1 1 250 250 + +
been selected from the R 20 series of preferred
numbers, in accordance with ISO 3.
1 1 400 400 + +
1 1 600 600 + +
a) Classical V-belts - Sections Y, 2, A, B, C, D, E
1 1 800 800 + +
Datum lengths of V-belts of section Y are given in 2 2 000 000 + +
table A.1 .
2 2 240 240 + +
2 2 500 500 + +
Datum lengths of V-belts of sections Z, A, B, C, D
2 2 800 800 + +
and E, corresponding to the R 20 series of pre-
ferred numbers, are only applicable if the stock of
3150 3150 + +
moulds of the manufacturer conforms to this se-
+ +
3 3 550 550
ries. Otherwise, the datum lengths of these V-
4000 4000
belts shall be those given in table A.1.
4 4 500 500
b Narrow V-belts - Sections SPZ, SPA, SPB,
5 5 000 000
SPC
5 5 600 600
Standard datum lengths of V-belts of n
...
NORME
ISO
INTERNATIONALE
Deuxième édition
1992-I 2-l 5
Corrigée et réimprimée
1993-05-I 5
Transmissions par courroies - Courroies
trapézoïdales classiques et étroites -
Longueurs dans le système de référence
Belt drives - Classical and narrow V-belts - Lengths in datum system
Numéro de référence
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fedération
mondiale d’organismes nationaux de normalisation (comités membres de
I’ISO). L’élaboration des Normes internationales est en général confiée aux
comites techniques de I’ISO. Chaque comite membre interessé par une
Atude a le droit de faire partie du comité technique creé a cet effet. Les
organisations internationales, gouvernementales et non gouvernemen-
tales, en liaison avec I’ISO participent également aux travaux. L’ISO colla-
bore etroitement avec la Commission électrotechnique internationale (CEI)
en ce qui concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptes par les comités techniques
sont soumis aux comites membres pour vote. Leur publication comme
Normes internationales requiert l’approbation de 75 % au moins des co-
mites membres votants.
La Norme internationale ISO 4184 a ete élaboree par le comite technique
lSO/TC 41, Poulies et courroies (y compris les courroies trapézoïdales),
sous-comité SC 1, Courroies trapézoïdales et poulies à gorges.
Cette deuxieme édition annule et remplace la première édition
(ISO 4184:1980), dont elle constitue une révision technique.
L’annexe A de la présente Norme internationale est donnée uniquement
à titre d’information.
0 ISO 1992
Droits de reproduction réservés. Aucune partie de cette publication ne peut être reproduite
ni utilisee sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie et les microfilms, sans l’accord ecrit de l’éditeur.
Organisation internationale de normalisation
Case Postale 56 l CH-l 211 Geneve 20 l Suisse
Imprime en Suisse
ii
NORME INTERNATIONALE
- Courroies
Transmissions par courroies
- Longueurs dans
trapézoïdales classiques et étroites
le système de référence
SPC (pour gorges de poulies de 19 mm de largeur
1 Domaine d’application
de référence):
- les longueurs de réference recommandées;
La présente Norme internationale prescrit pour les
- les tolérances sur les longueurs de référence;
courroies trapézoïdales classiques et étroites de sec-
tions
- les variations d’entraxe;
Y (pour gorges de poulies de 5,3 mm de largeur
- les conditions de contrôle de la longueur de refe-
de reférence),
rente et de la variation d’entraxe.
(pour gorges de poulies de 8,5 mm de largeur
Z
de référence), Les courroies trapézoïdales de sections Y, Z, A, B, C,
D, E sont appelées courroies trapézoïdales classiques,
A (pour gorges de poulies de 11 mm de largeur
et celles de sections SPZ, SPA, SPB et SPC, courroies
de référence),
trapézoïdales étroites.
B (pour gorges de poulies de 14 mm de largeur
II est important que les courroies étroites ne soient
de référence),
pas utilisees avec des poulies destinées aux seules
courroies classiques.
C (pour gorges de poulies de 19 mm de largeur
de référence),
D (pour gorges de poulies de 27 mm de largeur
2 Références normatives ,
de référence),
E
(pour gorges de poulies de 32 mm de largeur
Les normes suivantes contiennent des dispositions
de référence),
qui, par suite de la réference qui en est faite, consti-
tuent des dispositions valables pour la présente
SPZ (pour gorges de poulies de 8,5 mm de largeur
Norme internationale. Au moment de la publication,
de référence),
les éditions indiquées étaient en vigueur. Toute
norme est sujette à revision et les parties prenantes
SPA
(pour gorges de poulies de 11 mm de largeur
des accords fondes sur la présente Norme internatio-
de référence),
nale sont invitées à rechercher la possibilité d’appli-
quer les éditions les plus recentes des normes
SPB (pour gorges de poulies de 14 mm de largeur
indiquées ci-aprés. Les membres de la CEI et de I’ISO
de référence),
possèdent le registre des Normes internationales en
Tableau 1 - Longueurs de référence normalisées
vigueur à un moment donne.
des courroies trapézoïdales étroites
Dimensions en millimètres
ISO 3:1973, Nombres normaux - Séries de nombres
normaux.
Distribution en fonction des
I
sections
Ld
ISO 1081: 1980, Transmissions par courroies trapezoi-
SPZ SPA SPB SPC
dales et poulies a gorges - Terminologie.
+
ISO 4183: 1989, Transmissions par courroies - Cour- 630
roies trapézoïdales classiques et étroites - Poulies à
710 +
gorges (système base sur la largeur de référence).
800 + +
900 + +
ISO 9608: 1988, Courroies trapézoïdales - Uniformité
Variations d’en traxe - Spécifications
des courroies - 1 000 + +
et methode d’essai.
1 120 + +
1 250 + + +
1400 + + +
3 Définitions
1 600 + + +
1 800 + + +
Pour les besoins de la présente Norme internationale,
2 000 + + + +
les termes et symboles relatifs aux transmissions par
2 240 + + + +
courroies trapézoÏdales, c’est-à-dire aux courroies et
poulies à gorges, définis dans I’ISO 1081 s’appliquent.
2 500 + + + +
2800 + + + +
3150 + + + +
4 Longueur de référence, Ld 3 550 + + + +
4 000 + + +
+ +
4 500 +
4.1 Les longueurs de reference normalisees sont
+ +
5 000
les longueurs de reference sous tension, mesurées
5600 + +
dans les conditions spécifiées en 7.1.
6300 + +
7100 + +
4.2 Les valeurs nominales des longueurs de refe-
8 000 + +
rente normalisées des courroies trapézoïdales, expri-
9 000 +
mees en millimètres, ont été choisies dans la série
R 20 des nombres normaux, conformement à
10 000 +
I’ISO 3.
11 200 +
12 500 +
a) Courroies trapézoïdales classiques - Sections
Y, Z A, B, C, D, E
Les longueurs de référence des courroies trapé-
zoïdales de section Y sont données dans le
tableau A.1 .
Les longueurs de reference des courroies trapé-
zoïdales des sections Z, A, B, C, D et E, conformes
a la série R 20 des nombres normaux,
...












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