This engineering drawing depicts a standard spur gear with precise dimensional specifications. This gear features a pitch circle diameter of approximately 90 inches with a smaller center bore. The tooth profile follows standard involute geometry with dimensions including tooth thickness, clearance, and pitch measurements. Key dimensional callouts include diameters of 10.0000, 12.0000, 20.0000, 45.0000, 60.0000, and 120.0000 inches, which define the addendum, dedendum, and other critical gear parameters. The gear incorporates standard tooth spacing around the circumference with appropriate root fillets to minimize stress concentration. The overall configuration suggests this is a mechanical power transmission component designed for moderate to heavy industrial applications, with consideration for load distribution across the tooth faces.
Spur Gear Detail Drawing with Standard Tooth Profile
