Recently encountered a bearing failure that resulted from apparent lack of lubrication in a pump that had no previous problems in this area. The bearing housing is sump type with oil rings and Trico optomatic oiler. Older machinery guru mentioned an "oil siphon", where an oil leak along the...
On several centrifugal end suction pump of varying manufacturers, design conditions, etc., have recent problem of impeller nuts coming off shaft, followed by impeller, with associated damage to casing, impeller, shaft, etc.
Nuts are threaded opposite normal pump rotation direction and have...
