What Are The Causes Of High Temperature In Fire Pump Bearings?

Reason 1: Due to the sudden increase in axial thrust during the operation of the fire pump, for example, if the balance plate and balance ring in the fire pump are seriously damaged, the thrust will increase, which will increase the axial load on the bearings, thus causing the fire pump to fail. Bearing temperature is too high.

Reason 2: The fire pump shaft is bent or inconsistent, which will cause the fire pump to vibrate and cause the bearings to heat up or wear.

Reason 3: There is not enough lubricating oil in the bearings of the fire pump, or the quality is too poor and there are debris inside;

Reason 4: The fire pump bearing has been damaged due to long-term use. For example, when the fire pump is operating, the rolling bearing cage is damaged, or the steel ball crushes the inner ring or the outer ring breaks, or the alloy layer of the sliding bearing peels off or falls off, etc. These are all direct causes of fire pump bearing heating.

Reason 5: The bearing clearance of the fire pump does not meet the requirements. For example, if the fit between the inner ring of the bearing and the fire pump shaft, the outer ring of the bearing and the bearing body is too loose or too tight, it can cause the bearing to heat up.