Relationship between lubricant temperature and vibration
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In our refrigerant centrifugal compressors, the temperature of the lubricating oil is kept above 43°C; when the oil temperature drops below 43°C, the vibration of the high-speed drive shaft increases. What could be the reason for this? I hope our experts can provide some guidance.
It’s that the vibration value is high at temperatures below 43°C; you’ve misunderstood.
At low temperatures, oil viscosity is high, resulting in poor distribution of the oil film. This increases the resistance in the bearings at high speeds, leading to vortices and higher vibration levels.
Sorry, I misread it; the principle is fine, right?
To what extent does oil temperature affect vibration? Can it be ignored during normal operation? Our oil temperature is controlled by an oil cooler, and adjusting it on a daily basis is quite time-consuming. Thank you for the answer
It will definitely have an impact; just search on Baidu for oil film turbulence