Submersible Pump bearing temperature is too high causes

Deep well submersible pump bearing temperature rise too high main reason: (at this time as long as the observation, timely identify the cause, the treatment is not difficult)
(1) deep shaft submersible pump shaft bending or different heart, will pump vibration, causing bearing heat or wear.
(2) due to increased axial thrust (such as the balance plate and balance ring in the pump when the damage), so that bearing axial load increased, resulting in bearing heat or damage.
(3) bearing lubricating oil (grease) is insufficient or too much, of poor quality, there are sediment, iron debris and other debris; sliding bearings sometimes oil ring does not rotate, with oil on the bearing caused by heat.
(4) bearing with the gap does not meet the requirements. Such as bearing inner ring and water pump shaft, bearing outer ring and bearing body, with too loose or too tight, can cause bearing heat. (With too tight will make the bearing rotation is not flexible; with too loose, will rotate the bearing inner ring or the bearing in the bearing body rotation).
(5) deep well submersible pump rotor static balance is not good. Pump rotor radial force increases, the bearing load increases, resulting in bearing heat.
(6) deep well submersible pump in the non-design point of operation to produce vibration, but also make the pump bearing heat.
(7) Bearing damage (including the purchase of the bearing itself quality problems), often more common causes of bearing heat, such as the rolling bearing cage damage, ball crushed inner or outer ring fracture; sliding bearing alloy layer peeling, Out blocks and so on. This situation bearing abnormal sound, noise, should be opened in time to check and replace the bearing.