BB5 pump non-drive end bearing nut structure
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There is a tapered part behind the screw thread of the non-drive end bearing nut of Sulzer BB5 pump, which is an interference fit with the shaft. Does anyone know the function of the tapered part?
The tapered part behind the thread of the non-driving end bearing nut of the BB5 pump is used to adjust the bearing preload force. By adjusting the interference fit between the tapered part and the shaft, the size of the bearing preload force can be changed. This ensures that the bearings are well lubricated and sealed during operation and avoids bearing vibration and excessive wear. .
The tapered part is seized and difficult to remove during disassembly, causing the shaft and bearing nut to become fuzzed. Do you know any good disassembly techniques?
If the tapered part is stuck, it is recommended to use the following method to disassemble it: 1. Use special disassembly tools: The nut can be more easily removed with the appropriate special removal tool. 2. Heating: Heat the nut and shaft first, and then quickly remove it with a wrench. This will loosen the cone surface and make it easier to remove. 3. Apply lubricant: Apply some lubricant to help the cone relax and make removal easier. 4. Use ice water to cool down: Using the principle of thermal expansion and contraction of metal at different temperatures, use ice water to cool down the space between the shaft and the nut, and then use a wrench to disassemble it as quickly as possible, which can also make disassembly easier. It should be noted that if the above methods cannot be disassembled, it is best not to disassemble it by force to avoid causing greater damage. You may consider seeking help from a professional repairman or manufacturer. .
This is a Kingsbury thrust bearing, and the lock nut locks the thrust plate.