spur gear 3d model

High-detail 3D model of a peripheral impeller wheel for a liquid pump. The wheel is flat and round, with a central hub and straight radial blades on both sides of the disk, evenly distributed around the circumference. Blades start at the center and extend outward to the outer perimeter. The impeller is symmetric relative to the mid-plane. At the center there is a cylindrical bore for a shaft, with two opposite flat key surfaces (double-flat shaft seat / two parallel key flats). Include a stepped inner hub with accurate concentric cylindrical surfaces. On the front face of the hub, place two threaded holes (M6-like) located symmetrically relative to the shaft axis, aligned parallel to the axis, positioned on a circular pitch around the center. Outer diameter around 126 mm, inner hub diameters around 19–34 mm in stepped form. The blades are narrow, straight, evenly spaced (around 32–36 blades), uniform thickness. Overall appearance: machined metal part, clean surfaces, precise engineering geometry, realistic li