When looking through the oil sight glass of the bearing housing, many small bubbles are continuously forming in the lubricating oil. What could be the cause of this?
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1. The lubricating oil is type 46 anti-wear hydraulic oil. 2. Bearing housing temperature: 55°C. 3. Medium temperature: 42°C. 4. The pump type is a magnetic pump.
Is there air now? Is the sealing not working properly?
There is a breather cap on the top of the bearing housing, whose function is to balance the pressure difference between the inside and outside of the bearing housing. It is necessary for there to be ventilation between the inside and outside of the bearing housing; isn’t it normal for gas to be present?
4. The pump type is a magnetic pump. Does a magnetic pump require lubricating oil? ? ? ? ? ? ? ? ? ? ? ? ?
The bearing housing of the magnetic pump’s input shaft is equipped with rolling bearings that require lubricant, while the output shaft has Sic sliding bearings that do not need lubricant and are lubricated by the material itself.
There is a breather cap on the top of the bearing housing, whose function is to balance the pressure difference between the inside and outside of the bearing housing. It is necessary for there to be ventilation between these two areas, and it is normal for gas to be present. The pump running at high speed causes the oil slinger to introduce air into the oil
So, air is introduced during the oil shedding process, resulting in bubbles. If these bubbles burst inside the bearings, causing cavitation, will that have an impact on the bearings?
Some oils, such as hydraulic oil, contain additives; most of these additives are polar compounds with surfactant properties that cause bubbles to form in the oil. You can try changing the oil used in the L-AN total loss system to L-TSA turbine oil
Does bubble formation have an impact on the equipment?
Foam increases the surface area where oil comes into contact with air, accelerating oxidation and deterioration, and it also affects the cooling effect. It still has an impact on the bearings.