Research into new biodegradable oil compositions

In order to develop an alternative to mineral oils used for lubricating motor saw chains, tribological research on biodegradable lubricating materials (rapeseed oil RO, rapeseed oil methyl esters RME and lard methyl esters LME) was carried out. Pure materials (RO, RME and LME) and their compositions, modified with different treat rates of a chain bar additive, were analyzed, The obtained results were compared with commercial biodegradable oil used for the same purpose. Wear scar reduction was tested in a four-ball tribometer. The greatest effect of an additive was found to have on the lubricating properties of LME, the minimum effect - on RME. In modifying RO, its wear reduction properties adequate to commercial motor saw chains lubricants were achieved. When modifying RME, the additive was found to reduce the wear and to change its nature substantiallyVytauto Didžiojo universitetasŽemės ūkio akademij