Wear problem of copper oil slinger ring in bearing box
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This post was last posted by Lsh930303297 on 2019-2-21 19:22 Edit Boiler feed water pump, non-drive end bearing box, under the condition that the lubricating oil is not replaced regularly, the copper oil slinger ring on the thrust bearing end is seriously worn, and it merges with the lubricating oil and deteriorates, affecting the bearing lubrication, causing severe wear of the bearing radial pad and shaft diameter. The picture with the oil slinger ring is On another machine, and the installation directions of the two thrust bearing sleeves are different. If the thrust bearing sleeve with the oil slinger is installed in the opposite direction, the positioning pins cannot be installed in alignment because the positioning pin holes are in the wrong position. If you have any good opinions or suggestions on this kind of problem, please give me some advice.
1. The installation direction of the bearing sleeve in Figure 4 is correct. In Figure 1, was it installed in reverse for this reason before? The positioning pin holes are wrong and cannot be installed in alignment. You can use a turntable to reposition the positioning pin holes, or ream the original positioning pin holes. 2. There are quite a lot of copper shavings on the surface in Figure 3. I don’t see any wear on the oil slinger. Is the positioning bearing 73xxACM? If so, the bearing code M means that the bearing cage is made of brass. The angular contact ball bearings are installed back to back. The installation direction of the bearing sleeves is reversed, which accelerates bearing wear. These copper shavings may also be the product of the wear of the bearing cage. Check the bearing to see if it is worn, and measure the bearing clearance. After all, the radial bearing and the shaft are worn, and 80% of this bearing is also worn.
1. The installation direction of the bearing sleeve in Figure 4 is correct. In Figure 1, was it installed in reverse for this reason before? The positioning pin holes are wrong and cannot be installed in alignment. You can use a turntable to reposition the positioning pin holes, or ream the original positioning pin holes. 2. There are quite a lot of copper shavings on the surface in Figure 3. I don’t see any wear on the oil slinger. Is the positioning bearing 73xxACM? If so, the bearing code M means that the bearing cage is made of brass. The angular contact ball bearings are installed back to back. The installation direction of the bearing sleeves is reversed, which accelerates bearing wear. These copper shavings may also be the product of the wear of the bearing cage. Check the bearing to see if it is worn, and measure the bearing clearance. After all, the radial bearing and the shaft are worn, and 80% of this bearing is also worn.
Figure 1, 3 thrust bearing set is reversed
As mentioned above, Figure 4 is the correct installation method. If the oil slinger ring is severely worn, check the levelness of the pump. If the pump is tilted, the oil slinger ring will keep grinding against the bearing sleeve. If the copper cage of the thrust bearing is greatly worn, check whether the bearing is installed correctly. If it is installed correctly, it means that the axial force is increasing, causing the bearing to wear. It is necessary to check the cause of the axial force becoming larger, such as checking the balance plate clearance, mouth ring clearance, changes in working conditions, etc.