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남궁석,權敬祐 大田工業高等專門學校 1969 論文集 Vol.4 No.-
Gear pump, having been studied and improved carefully in every respect these years, began to have a rapid high speedness without many defects that existed before. Therefore, today it can be operated with more than 100 ㎏/㎠ of high pressure. In this reseach, the important problems of gear pump are mentioned : 1. During the operation, to control the increase and decrease of the unusual pressure between the gears, and to produce better efficiency. 2. During the operation, to examine the weight and direction of the shaft load and to select the proper bearing to it. 3. To select the ratio between the outer diameter of gear and the width of gear. 4. To select the number of gear teeth. 5. The design of clearance.