oSIST prEN ISO 22705-3:2025

SLOVENSKI STANDARD
01-julij-2025
Vzmeti - Merilni in preskusni parametri - 3. del: Hladno oblikovane cilindrične,
vijačne, torzijske tlačne vzmeti (ISO 22705-3:2024)
Springs - Measurement and test parameters - Part 3: Cold formed cylindrical helical
torsion springs (ISO 22705-3:2024)
Federn - Mess- und Prüfgrößen - Teil 3: Kaltgeformte zylindrische Schraubenfedern (ISO
22705-3:2024)
Ressort - Mesures et paramètres d'essai - Partie 3: Ressorts à torsion cylindrique,
enroulés à froid (ISO 22705-3:2024)
Ta slovenski standard je istoveten z: prEN ISO 22705-3
ICS:
21.160 Vzmeti Springs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

International
Standard
ISO 22705-3
First edition
Springs — Measurement and test
2024-04
parameters —
Part 3:
Cold formed cylindrical helical
torsion springs
Ressort — Mesures et paramètres d'essai —
Partie 3: Ressorts à torsion cylindrique, enroulés à froid
Reference number
ISO 22705-3:2024(en) © ISO 2024

ISO 22705-3:2024(en)
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii
ISO 22705-3:2024(en)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 1
3.1 Terms and definitions .1
3.2 Symbols and abbreviated terms .2
4 Environmental conditions . 4
5 Qualifications of the person(s) performing the work . 5
6 Geometries of guiding and supporting devices . 5
7 Measuring and testing equipment . 5
8 Measurement and test parameter for technical cold formed cylindrical torsion springs . 5
8.1 Body length (L ) .5
B
8.1.1 General .5
8.1.2 Type of characteristic .5
8.1.3 Measuring and/or testing equipment .5
8.1.4 Conditions of measurement and testing .6
8.1.5 Method of measurement and testing .6
8.1.6 Test location on the product.7
8.2 Outside diameter (D ).7
e
8.2.1 General .7
8.2.2 Type of characteristic .8
8.2.3 Measurement and/or testing equipment .8
8.2.4 Conditions of measurement and testing .8
8.2.5 Method of measurement and testing .8
8.2.6 Test location on the product.10
8.3 Inside diameter (D ) .10
i
8.3.1 General .10
8.3.2 Type of characteristic .11
8.3.3 Measurement and/or testing equipment .11
8.3.4 Conditions of measurement and testing .11
8.3.5 Method of measurement and testing .11
8.3.6 Test location on the product. 13
8.4 Spring leg length (l) . .14
8.4.1 General .14
8.4.2 Type of characteristic .14
8.4.3 Measurement and/or testing equipment .14
8.4.4 Conditions of measurement and testing . 15
8.4.5 Method of measurement and testing . 15
8.4.6 Test location on the product. 15
8.5 Number of coils (n) and coil direction . 15
8.5.1 General . 15
8.5.2 Type of characteristic .16
8.5.3 Measurement and/or testing equipment .16
8.5.4 Conditions of measurement and testing .16
8.5.5 Method of measurement and testing .16
8.5.6 Test location on the product.17
8.6 Bending radius on legs (r) .17
8.6.1 General .17
8.6.2 Type of characteristic .17
8.6.3 Measurement and/or testing equipment .17
8.6.4 Conditions of measurement and testing .18
8.6.5 Method of measurement and testing .18

iii
ISO 22705-3:2024(en)
8.6.6 Test location on the product.18
8.7 Angle of bend on legs (φ) .18
8.7.1 General .18
8.7.2 Type of characteristic .18
8.7.3 Measurement and/or testing equipment .19
8.7.4 Conditions of measurement and testing .19
8.7.5 Method of measurement and testing .19
8.7.6 Test location on the product. 20
8.8 Spring pitch (p)/distance between the coils (u) . 20
8.8.1 General . 20
8.8.2 Type of characteristic . 20
8.8.3 Measurement and/or testing equipment .21
8.8.4 Conditions of measurement and testing .21
8.8.5 Method of measurement and testing .21
8.8.6 Test location on the product.21
8.9 Spring torque (M) . .21
8.9.1 General .
...