The ornamental design for a grainbinspreadermotor with domed bell, substantially as shown and described.
FIG. 1 is a perspective view of a grain bin spreader motor with domed bell showing my new design;
FIG. 2 is a side elevation view thereof;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a perspective view thereof, shown in environmental use.
The broken lines shown represent environmental structure and form no part of the claimed design.
The grain bin spreader motor with domed shaped bell is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.