Improving Pump Gear Geometry Through Secondary Gear Tooth Finishing


The direction of the hydraulic gear pump industry is higher-pressure pumps that run quieter and more efficiently. In light of this, there is great importance in developing improved pump gears that will satisfy the demands of tomorrow's hydraulic industry. The objective of improved geometry for reduced noise and contact stresses falls in step with the entire gear industry. Following is a discussion of three gears that have been developed for their strength and quality. One of the gears is a fuel pump gear with stringent controls placed on tooth alignment variation. Another gear was developed for high fatigue strength and improved gear geometry for high-pressure oil pumping applications. The third gear is not a pump gear but was developed for better gear geometry to reduce noise in a copier application.
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