oSIST prEN ISO 22705-2:2025

Springs - Measurement and test parameters - Part 2: Cold formed cylindrical helical extension springs (ISO 22705-2:2023)

This document specifies the measurement and test methods for general characteristics of cold
formed helical extension springs made from round wire, excluding dynamic testing.

Federn - Mess- und Prüfparameter - Teil 2: Kaltgeformte zylindrische Schraubenzugfedern (ISO 22705-2:2023)

Dieses Dokument legt die Mess- und Prüfverfahren für die allgemeinen Merkmale von kaltgeformten Schraubenzugfedern aus Runddraht fest, ausgenommen dynamische Prüfungen.

Ressort - Mesures et paramètres d'essai - Partie 2: Ressort hélicoïdal de traction cylindrique formé à froid (ISO 22705-2:2023)

Vzmeti - Merilni in preskusni parametri - 2. del: Hladno oblikovane cilindrične vijačne vzmeti (ISO 22705-2:2023)

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Jul-2025
• ICS: 21.160 - Springs
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 16-Jun-2025
• Due Date: 03-Nov-2025
• Ref Project: prEN ISO 22705-2 - Springs - Measurement and test parameters - Part 2: Cold formed cylindrical helical extension springs (ISO 22705-2:2023)

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2025
Vzmeti - Merilni in preskusni parametri - 2. del: Hladno oblikovane cilindrične
vijačne vzmeti (ISO 22705-2:2023)
Springs - Measurement and test parameters - Part 2: Cold formed cylindrical helical
extension springs (ISO 22705-2:2023)
Federn - Mess- und Prüfparameter - Teil 2: Kaltgeformte zylindrische
Schraubenzugfedern (ISO 22705-2:2023)
Ressort - Mesures et paramètres d'essai - Partie 2: Ressort hélicoïdal de traction
cylindrique formé à froid (ISO 22705-2:2023)
Ta slovenski standard je istoveten z: prEN ISO 22705-2
ICS:
21.160 Vzmeti Springs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 22705-2
First edition
2023-02
Springs — Measurement and test
parameters —
Part 2:
Cold formed cylindrical helical
extension springs
Ressort - Mesures et paramètres d'essai —
Partie 2: Ressort hélicoïdal de traction cylindrique formé à froid
Reference number
ISO 22705-2:2023(E)
ISO 22705-2:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 22705-2:2023(E)
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 . 3
5 Qualifications of the person(s) performing the work . 3
6 Geometries of guiding and supporting devices . 3
7 Measuring and testing equipment . 3
8 Measurement and test parameter for technical cold formed cylindrical extension
springs . 4
8.1 Free length (L ) . 4
8.1.1 General . 4
8.1.2 Type of characteristic . 4
8.1.3 Measuring and/or testing equipment . 4
8.1.4 Conditions of measurement and testing . 4
8.1.5 Method of measurement and testing . 4
8.1.6 Test location on the product. 7
8.2 Body length (L ) . 7
B
8.2.1 General . 7
8.2.2 Type of characteristic . 7
8.2.3 Measuring 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 Spring hook length (L ) . 10
H
8.3.1 General . 10
8.3.2 Type of characteristic . 10
8.3.3 Measuring 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 Hook opening (m) . 13
8.4.1 General .13
8.4.2 Type of characteristic . 13
8.4.3 Measuring and/or testing equipment . 14
8.4.4 Conditions of measurement and testing . 14
8.4.5 Method of measurement and testing . 14
8.4.6 Test location on the product. 15
8.5 Outside diameter (D ). 15
e
8.5.1 General .15
8.5.2 Type of characteristic . 15
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. 20
8.6 Inside diameter (D ) .20
i
8.6.1 General .20
8.6.2 Type of characteristic . 20
8.6.3 Measuring and/or testing equipment . 20
8.6.4 Conditions of measurement and testing . 20
iii
ISO 22705-2:2023(E)
8.6.5 Method of measurement and testing . 21
8.6.6 Test location on the product. 23
8.7 Total number of coils (n ), number of active coils (n) and coil direction .23
t
8.7.1 General .23
8.7.2 Type of characteristic . 23
8.7.3 Measuring and/or testing equipment . 25
8.7.4 Conditions of measurement and testing . 25
8.7.5 Method of measurement and testing . 25
8.7.6 Test location on the product. 26
8.8 Bending radius (r) .26
8.8.1 General . 26
8.8.2 Type of characteristic . 26
8.8.3 Measuring and/or testing equipment . 27
8.8.4 Conditions of measurement and testing . 27
8.8.5 Method of measurement and testing . 27
8.8.6 Test location on the product. 27
8.9 Spring load (F) .28
8.9.1 General .28
8.9.2 Type of characteristic .28
8.9.3 Measuring and/or testing equipment .28
8.9.4 Conditions of measurement and testing .28
8.9.5 Method of measurement and testing .
...