Waiting online for the principle of bearing lubrication, thank you very much
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How is the bearing lubricated inside its bearing housing? How does oil enter and exit the bearings? Thank you
Take the centrifugal pump as an example: under normal operation, the oil level in the pump’s bearing housing is roughly at the same level as the position of the lowest rolling element in the bearings. As the pump operates, the lubricating oil is flung around by the slinger ring, which rotates irregularly along with the bearing housing (the slinger ring is attached to the bearing housing), thereby splashing and providing lubrication for the inner ring of the bearings and the shaft. The most effective way is to wait until the pump is disassembled and then take a look at the internal structure of the bearing housing; this will help you understand better.
Reply to 2# kbly222: Thank you first; the explanation was very thorough. So, is the oil slinger that ring which is fitted on the shaft inside the oil chamber? It’s still that elastic retainer for positioning the bearing
It is the ring that fits on the shaft inside the oil chamber; it is usually made of H62 material, that is, brass； This is also known as splash lubrication or slinger lubrication. However, current chemical processing units use centralized oil-free lubrication. This approach enables better lubrication of the bearing balls, eliminates the need for oil slinger rings, and seals the oil return holes in the front and rear bearing caps, thereby reducing leaks ； We have used most of these devices, and the lubrication condition of the bearings has improved significantly; measurements using SPM show that they are at grade A. Moreover, cooling water is not required for the cryopumps, and the bearing temperature has dropped by about 5 degrees! Very good! It is recommended that all devices use this in the future
It is fitted over the bearing cap of the positioning bearing; the oil slinger does not come into contact with the shaft. The bearing top sleeve has protrusions on both sides and a flat surface in the middle; the oil slinger is mounted on this flat surface. Thanks to its structure with a lower part in the middle and higher parts on the sides, it ensures that it does not deviate from its intended path during rotation. I’ll send you a photo tomorrow and then you’ll know.
Reply to 5# kbly222: Thank you for your generous help; I look forward to seeing your photos, hehe
Reply to 4# andyhf: Who provides the power to move that oil slinger ring? Thank you!
Friction force between the shaft and the oil slinger ring
If it is lubricated with grease, explain how the bearing is lubricated. Thank you