The labyrinth seal doesn’t work well
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The temperature at the bearing housing is 90 degrees, and the labyrinth seal has failed. Do anyone have any good suggestions on how to fix this? Currently, we are trying to lower the temperature of the bearing housing and reduce the gap in the labyrinth seal. What should be the appropriate size for this gap? Which grade of copper should be used? Thank you all for your advice
If the bearing temperature is high, it is necessary to analyze the concentricity, fit tolerances, axial force on the equipment, and the clearance of the gland For labyrinth seals, it is necessary to consider whether the oil return holes are unobstructed, as well as the width and depth of the labyrinth grooves. It’s best to take a few photos to make a judgment! Reducing the gap may not work! If that doesn’t work, switch to a bearing protector or magnetic seal!
Also, check whether the stomatal covers are unobstructed! Oil level height!
Heat mainly comes from conduction from the front.
What specific device is it? Is it lubricated with light oil or grease? Make the bearing cover water-cooled, or replace it with a bearing housing equipped with water-cooled coils or a water-cooled jacket!
For pumps lubricated with thin oil, the space available for water cooling of the bearing caps is limited; now the bearing housing has been modified to allow for water cooling. I’d like to ask again: what is an appropriate single-sided gap for labyrinth seals? We have set it at 0.5, but some people say that a value of less than 0.15 is better. I’m not sure if that will work.
0.5 is too large; what is your journal size?
A gap diameter of 30 silk is perfect!
It’s not very effective when used on pumps; it’s better to use lip seals instead