Problems with the bearing installation method for vertical L1-type high-speed pump 308/TN9
Thread Content
One of our Beijing Aerospace L1 type high-speed pumps was experiencing leakage from the lubricating oil mechanical seal; it was taken apart for inspection, and a complete set of O-rings, mechanical seals, and bearings were replaced. During the installation of 308 TN9/C3, hot mounting (electromagnetic heating) is used. However, during installation, it was found that a ball was missing and the retainer was thermally fused. I would like to ask everyone about the methods for installing this type of bearing.
I misjudged; there’s no shortage of balls, it’s just that the retainer is missing
Heating a rolling bearing before assembly can expand the diameter of the inner ring, making it easier to insert the bearing in place. However, if the bearing is heated to too high a temperature, it may undergo annealing and get damaged; generally, the heating temperature for bearings should not exceed 150°C, with a standard control level of below 120°C.
Bearing cage engineering plastic? The temperature is too high; around 80°C is sufficient
Support for Floor 4! I’ve seen plastic versions; it’s fine once the temperature reaches 80-90 degrees!