STUDY OF THE IMPACT OF LUBRICANT TYPE ON SELECTED OPERATIONAL PARAMETERS OF A CHAINSAW USED IN BEECH TIMBER CUTTING

The focus of the study was to determine the influence of the lubricant used for greasing the cutting subsystem of a petrol chainsaw on selected operational characteristics. Three lubricating oils were studied, two of which were commercially available, while the other was a suitably modified rapeseed oil, prepared specifically for the study. It was shown that the application of selected lubricating components in the cutting subsystem of the chainsaw resulted in significant differences in the consumption of both the fuel and the lubricating agent.