The wear patterns of the cutting parts of chain saws lubricated with rapeseed oil, compared with the OA M6A oil
1990
Skoupy, A. (Vysoka Skola Zemedelska, Brno (CSFR). Lesnicka Fakulta)
The oil used to lubricate the cutting parts of chain saws is regarded as an important factor affecting the environment. Mineral oils, used for this purpose, have recently been often replaced by improved vegetable oils which are regarded as ecologically safe. The Department of Forestry Mechanization of the Forestry Faculty at the Agricultural University of Brno performed a laboratory comparison of the lubricating capabilities of raw food rapeseed oil with those of the OA M6A oil. A special device was used to measure the patterns of wear of the Stihl Oilomatic chains and Sandvik cutter bar; using this device, the conditions of the movement of the chain in the bar (speed and load) were simulated, including the dosage and temperature of the lubricating oil. It can be concluded from the results of the test that raw rapeseed oil cannot be recommended because of the much quicker wear of both the chain and the bar and a higher power needed to drive the chain. It will be necessary to develop new high-quality oil, based on vegetable oil, which properties would match those of such oils produced in other countries and allow to fully replace the mineral oils used until now.
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