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The article is devoted to the improvement of circular saw machines with pneumatic drive of cutting mechanism. Currently, circular saws are widely used for producing of sawn timber because they have high productivity. The drive of saw blades more often is carried out by electric motors through additional transmission (gear, belt, etc.). In the recent literature are offered technical solutions, in which as a drive of circular saws provided by using of pneumatic. Energy source interacts with the circular saw will all...