Causes of Heat in Bush-bearings of Electrical Machines
Q. What are the causes of heat in bush-bearings of electrical machines ?
Following are the causes of heat in bush-bearings :
- Worn out bearings / sleeves.
- Worn out shaft.
- Loss of lubrication.
- Mis-alignment of shaft pulleys couplings.
- Heavy vibration and noise due to uneven air-gap in stater.
- Excessive thrust imposed on machine.
- Machine heavily loaded for prolonged period.