Industrial Lubrication Tribology. For Peer Review # # $ # % #

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1 Palazzetti, Roberto and Yan, Xiu (0) Study on lubrication effect on motorbike chain transmissions. Industrial Lubrication and Tribology, (). ISSN 00-, This version is available at Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url ( and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge. Any correspondence concerning this service should be sent to the Strathprints administrator: The Strathprints institutional repository ( is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output.

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18 Page of Industrial Lubrication Tribology CHAIN DRIVEN OILER SPROCKET Figure : Automatic oiler and its position

19 Industrial Lubrication Tribology Page of (a) Overall view of the rig Figure : Experiment set up (b) Accelerometer and thermocamera

20 Page of Industrial Lubrication Tribology Figure : Mechanical efficiency of the transmission under different speed and lubricant conditions

21 Industrial Lubrication Tribology Page 0 of Figure : Root mean square

22 Page of Industrial Lubrication Tribology (a) Frequency spectrum at 00 RPM (b) Frequency spectrum at 00 RPM (c) Frequency spectrum at 00 RPM Figure : Frequency spectrum of the registered vibrations

23 Industrial Lubrication Tribology Page of (a) Thermo-Image of no lube condition (b) Thermo image of mineral lube condition (c) Thermo image of spray lube condition Figure : Examples of thermo-images taken at 00 RPM

24 Page of Industrial Lubrication Tribology Figure : Chain temperature under different lubricant conditions

25 Industrial Lubrication Tribology Page of Speed Efficiency (η) (RPM) No Lube Mineral Lube Gain (%) Spray Lube Gain (%) Table : Mechanical Efficiency of Transmission

26 Page of Industrial Lubrication Tribology Speed Root Mean Square (RMS) (RPM) No Lube Mineral Lube Gain (%) Spray Lube Gain (%) Table : Root Mean Square

27 Industrial Lubrication Tribology Page of Speed Temperatures ( C) (RPM) No Lube Mineral Lube Gain (%) Spray Lube Gain (%) Table : Temperatures ( C)