ISO 4184:1992

SLOVENSKI STANDARD
01-december-1997
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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.
...