Why are the inner bores larger than the sides of the bearing housings?
Because the center of the bearing is the outer diameter, both sides of the bearing diameter, shaft sizeBearing outside diameter and bearing bore must be unequalIf the middle and the sides are the same size, the bearings will not fit in
This is mainly due to the process of considering the bearing bore and cylindrical bearings with higher tolerance, if the holes are difficult to achieve this requirement, so the middle of a diameter increase, not by finishing as matching surface, can reduce the cost, and received good results!
Bearing block buckle 280101994 SKF bearing seat
