A GRAPHICAL DETERMINATION OF CHANGE SPEED GEAR BEARING LOADS

The question of the selection of the proper sizes of ball-bearings for any given set of conditions is one that should properly receive the consideration of those most expert in their design and application. However, in change speed gear design, where the ratio between the diameters of the bearings and the diameters of the gears is small, the sizes of the bearings have so great an influence on the center distance of the shafts and the shape and outline of the casing that a change in the bearings from those originally laid out frequently necessitates the redesigning of the whole job.