I have a problem of bearing failure. A motor drives a shaft thro a flat belt. This shaft is connected to a load of around 40 kw. The shaft has 1309 self aligning ball bearing as floating bearing at the back end of shaft. On the load side there is a bearing 2209 NUP. The bearing inners are locked by circlips and outer is locked with housing. But within 2 to 3 months of continous running, either the shaft shifts away from the load after abrading the circlip or the bearing 2209NUP fails. Will somebody be able to throw some light on what is wrong around here.