Roller Bearing avoid resonance with the host ,

to control noise  bearings must take countermeasures root causes for these noise generation , in order to receive a permanent cure results. The main route is :(1) Choose low noise Cylindrical roller bearings ;  (2) avoid resonance with the host , avoiding sensitive resonance speed ; (3) from the cylindrical roller bearing applications link on trying to eliminate noise ;  (4) is invalid in other ways , additional measures of noise and silencer .  bearings when the temperature rises , first determine whether china bearings the malfunction, as indeed increased, should be treated as follows :  check the cooling water pressure , flow and piping systems are normal. If water filter may be clogged down and can not handle , you can stop treatment, when it is confirmed to work , and then put into use.  Should check governor oil pressure, oil pressure may result if the cooling water hydraulic valves closed.  Check whether there is abnormal sound bearings , cylindrical roller bearings and high precision bearing detect whether there are abnormal swing . Take oil samples to observe whether there are changes in oil color , and conduct tests to see whether the deterioration. If confirmed deterioration , should be shut down to replace with new oil.  Check the oil standard oil level is normal, if abnormal , check the tank drain valve is closed. If closed, should fill the oil , if it is sealed cushion oil leakage should stop processing