What Are The Factors That Contribute To Bearing Failure In A Steam Tu

1.	What Are The Factors That Contribute To Bearing Failure In A Steam Turbine?
Answer» IMPROPER lubrication. Only the recommended lubricant should be used. Inadequate water-cooling. The jacket TEMPERATURE should be MAINTAINED in the range of 37-60°C The flow of cooling water should be adjusted accordingly. Misalignment:It is desirable that ball bearings should fit on the turbine shaft with a light press fit. If the fitting is too tight, it will CAUSE cramping. On the other hand, if the fitting is too loose it will cause the inner race to turn on the shaft. Both conditions are undesirable. They result in wear, excessive vibration and overheating. And bearing failure BECOMES the ultimate result. Bearing fit. Excessive thrust. Unbalance. Rusting of bearing.

What Are The Factors That Contribute To Bearing Failure In A Steam Turbine?

Answer»

Misalignment:It is desirable that ball bearings should fit on the turbine shaft with a light press fit. If the fitting is too tight, it will CAUSE cramping. On the other hand, if the fitting is too loose it will cause the inner race to turn on the shaft. Both conditions are undesirable. They result in wear, excessive vibration and overheating. And bearing failure BECOMES the ultimate result.
Bearing fit.
Excessive thrust.
Unbalance.
Rusting of bearing.