Lubricating properties of rapeseed-based oils

✍ Scribed by Arnšek, A. ;Vižintin, J.

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 810 KB
• Volume: 16
• Category: Article
• ISSN: 0265-6582
• DOI: 10.1002/jsl.3000160402

✦ Synopsis

Abstract

Three commercially available hydraulic/transmission lubricants based on rapeseed oil have been investigated for their lubricating properties. The coefficient of friction, scuffing‐load capacity, and pitting resistance were evaluated, and the results compared with a corresponding commercial mineral‐based oil.

The results showed in general a substantially lower coefficient of friction and better pitting resistance for rapeseed‐based oils than for the mineral oil. Scuffing load capacity was, with one exception, the same for all oils. As a result of lower shear stresses during contact, and a higher viscosity index, the temperatures in the gearbox were lower for the rapeseed oils tested than for the mineral oil. Insufficient antiwear behaviour at high loads was found to be a major drawback of these vegetable oils.