Right Ascension Axis Support Housing - Bearing Placement and Centering

 

Flange Bearing and Placement (Click for enlarged view)

 

Careful placement of the hanger bearings on both the front and rear panels is a must. In the above photo we see one of the two bearings centered in reference to the outer edges of the front section. This process is repeated for the rear side as well. After the bearing is centered, we pencil trace the bearing mounting holes onto the front and rear sections, then  a 1/2" hole is drilled in the center of each tracing to facilitate the bearing. The mounting holes in the bearings are 5/8" inside diameter. They  will require hollow shims that have an inside diameter of 1/2" and an outside diameter of 5/8" and will be used to center the mounting bolts to prevent the bearing from shifting.