Tunnel centrifugal fan is mainly used for ventilation and ventilation in underground tunnels, railway tunnels, caves and underground engineering and buildings. It is a high pressure, low noise and high efficiency centrifugal fan. Tunnel centrifugal fan is a special centrifugal fan, which is mainly used in the longitudinal ventilation system of highway, railway and subway tunnels. What are the causes of overheating of centrifugal fan bearings?
1. Friction between the parts of the spindle or spindle of the centrifugal fan and the bearing box;
2. The motor shaft is not concentric with the fan shaft, so that the inner rolling bearing in the bearing box does not move.
3. Excessive grease in the bearing box;
4. There is a gap between the bearing and the bore of the bearing box, and the bolt of the bearing box is too tight or loose.
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