Measurements of noise resulting from cutting chain movements on a chain-saw bar, lubricated with different oils

The chain-saw is one of tools commonly used for professional work in the for- est and home yards. While working the tool is a source of considerable noise. Experi- ments on vibration and noise damping abilities of mineral and vegetable oils were carried out at the PIMR - Industrial Institute for Agricultural Machinery in Pozna �. The experi- ments were conducted on a specially constructed measuring stand. The chain saw was running along the bar, while no wood was being cut. Noise was measured with a Bruel & Kjaer meter at a height of the longer symmetry axis of the bar, when the bar plane was vertical and the symmetry axis was horizontal. Measurement results showed that noise levels observed were high and varied with oils used, ranging from 99.6 dB(A) for one of the vegetable oils to 105.2 dB(A) for a mineral oil.