ISO INTERNATIONAL STANDARD 19291 First edition 2016-12-01 Lubricants Determination of tribological quantities for oils and greases Tribological test in the translatory oscillation apparatus Lubrifiants - Détermination de quantites tribologiques d'huiles et de graisses Essais tribologiques dans I'appareil translation-oscillation Reference number AX ISO 19291:2016(E) ISO International Organization for Standardization IS02016 ted without license from IHS IS0 19291:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland 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 19291:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Principle ..2 5 Reagents. ..3 6 Apparatus. ..4 7 Test pieces. .5 7.1 General ..5 7.2 Test ball .6 7.3 Disk .6 8 Preparation of apparatus .6 8.1 Installing the specimen holders and test specimen in the test chamber .6 8.2 Test conditions. .7 9 Test procedure .7 9.1 General .7 9.2 Friction and wear .8 9.3 Extreme pressure test .8 9.4 Calibration and inspection. .8 9.5 Determining the tribological quantities 9.5.1 General .8 9.5.2 Wear scar diameter of ball ..8 9.5.3 Wear volume of ball. .8 9.5.4 Wear volume of disk ..8 9.5.5 Optional. ..8 10 Expression of results ..9 10.1 General .9 10.2 Friction and wear testing .9 10.3 Extreme pressure testing .9 11 Precision .9 11.1 General. .9 11.2 Repeatability, r .9 11.3 Reproducibility, R. 12 Test report ..10 Annex A (informative) Translations of terms ..11 Annex B (informative) Compilation of test results for filing. ..12 Bibliography .13 iii ed without license from IHS