ISO INTERNATIONAL STANDARD 19973-3 Second edition 2015-09-01 Pneumatic fluid power Assessment of component reliability by testing Part 3: Cylinders with piston rod Transmissions pneumatiques - Evaluation par essais de la fiabilité des composants - Partie 3: Verins avec tiges de piston Reference number ISO 19973-3:2015(E) SO International Organization for Standardization @ IS0 2015 dardization5956617 ted without license from IHS IS0 19973-3:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS02015,PublishedinSwitzerland All rights reserved. Unless otherwise specified, 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. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax+412274909 47 copyright@iso.org www.iso.org Intenationai br PrganizationforStandardization I by IHS unde etworking permitted without license from IHS IS0 19973-3:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Symbols and units ..2 5 Test equipment. .2 6 Test conditions. .2 6.1 General test conditions .2 6.2 Initial condition .3 6.3 Endurance test conditions 3 6.3.1 Orientation .3 6.3.2 Side loads 3 6.3.3 Stroke lengths. 4 6.3.4 Test operating time 6 6.4 Operating adjustments 7 7 Test procedures .1 7.1 Timing of checks and measurements 7 7.2 Type and scope of checks and measurements .7 7.2.1 Functional check .7 7.2.2 Measurement of leakage ..7 7.2.3 Minimum working pressure test (for double-acting cylinders only) .7 7.2.4 Stroke time test. .8 8 Failure criteria and threshold levels .8 8.1 General .8 8.2 Functional failure .8 8.3 Failure due to leakage .8 8.4 Failure related to minimum working pressure .9 8.5 Failureduetoexceedingthemaximumteststroketime .9 8.6 Customised agreements .9 9 Data analysis .9 10 Test report .9 11 Identification statement (reference to this part of IS0 19973) .10 Annex A (informative) Methods for calculating side load masses and related dimensions ..11 Annex B (informative) Test data sheet ..18 Bibliography .21 iii dardization5956617 vithoutlicense from IHS