KEYWORDS

Hydraulic Oil, Tribo-Performance, Friction Tester, Elastohydrodynamic Lubrication, EN-31 Steel

EXPERIMENTAL AND THEORETICAL STUDY OF SAE 10 HYDRAULIC OIL LUBRICATED EN-31 STEEL-STEEL TRIBO-PAIRS

The objective of research work is to study the tribo-performance of SAE10 hydraulic oil in EN-31 Steel pairing contact. Investigations with smooth flat functional surfaces in gear/bearing contacts, under unidirectional sliding are reported. Fundamental part of the study is oriented towards understanding on the effect of operating parameters on mechanisms at mixed or boundary lubrication and development of lubricating oil film in the contact area. A one dimensional EHL line contact model is developed and solved using finite element approach to determine the contact pressure and lubricant film thickness. Experiments are carried out with pin-on-roller contact geometry using a friction test rig at sliding velocities up to 0.785m/s, normal loads ≤ 300N and temperature ≤ 50°C. Results shows that tribo-performance is significantly influenced by the operating parameters. Improved understanding of operating mechanisms for controlling friction in practical sliding systems is obtained.

Authors and Institutions

Gananath D. Thakre, S.P. Harsha, Satish C. Sharma, Dept. of Mechanical & Industrial Engineering, Indian Institute of Technology, Roorkee, India and M.R. Tyagi, Tribology Division, CSIR – Indian Institute of Petroleum, Dehradun, India