Problems with lubricating oil in high-speed centrifugal pumps
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This post was last edited by yxmqh on 2009-11-1 22:50. 1. How is the oil level of 1/2–2/3 determined? Is it while the pump is running or when it is stopped? 2. When it is in operation, there is a lot of foam visible in the lubricating oil sight glass. What causes this? Is it due to an excessive oil level? 3. Is lubricating oil generally used..? Could someone with more experience give some advice? Thanks
1. The oil level is generally the level before operation. 2. Foam is usually flung up; there’s no need to pay attention to it. 3. Manufacturers generally have specific requirements regarding the use of lubricants, and it should not be used indiscriminately.
Oh, I see. Thank you...
For high-speed pump lubricants, Mobil ATF220# or Chongqing Yiping 6# transmission oil is generally recommended!
I used Mobil oil, as foam kept appearing in the oil sight glass; I suspected there might be an issue with the quality of the oil, but tests showed nothing wrong. I thought too much oil had been added (it was around 2/3 when turning, and full in the gauge when stopped), but I heard from others that it’s not that the reason. How’s the pump over there?
We have also experienced a lot of bubbles before, and the machinery said it was normal. It’s possible there is an issue with it itself.
10# hydraulic transmission oil will do
7# daqing01: Qingxin Wuyu relies on years of experience and daily observations; in fact, the oil level in the bearing housings of many pumps is on the high side, especially in the case of low-power pumps. In some cases, the oil level is set right at the center of the shaft, which is far too high! As the shaft rotates, foam is generated, and this is caused by the stirring action of the shaft; less foam is produced when there is less stirring, but generally some foam does appear, as it is caused by the stirring action of the bearings. It’s okay
There is a lot of foam; it’s possible that the oil added in the first and second times was not of the same type. If it’s an ordinary small pump, it doesn’t matter much.
8# hydraulic transmission oil can replace Mobil ATF220; can lubricants be produced domestically? Haha!