Why Vacuum Pump Bearings Wear？

There are many reasons for the wear of vacuum pump bearings, which may cause the wear of bearings alone or in combination. The following are some of the main reasons:

1. Fatigue wear of bearing materials: Vacuum pumps often operate under high loads, and metals will show fatigue under long-term stress. This fatigue will cause a gap between the bearing and the shaft mating surface. If it is not discovered and handled in time, the bearing and the shaft are prone to relative movement during operation, causing serious wear of the bearing.

2. Processing size error: During the manufacturing process of the vacuum pump, if the interference fit size between the rotor shaft and the bearing is designed too small, or the contact area is insufficient, then under heavy load impact, a gap is likely to appear between the bearing and the rotor shaft, thereby further aggravating the wear.

3. Lubrication problem: The lubrication condition of the bearing is crucial to its service life. Insufficient lubrication, grease loss or reduced lubrication performance. As well as the entry of various dust impurities, will lead to increased bearing wear. Therefore, choosing a suitable lubricant and regularly checking and replacing it to ensure that the bearing is fully lubricated is an important measure to prevent bearing wear.

4. Working environment problem: If there is dust, corrosive gas, etc. in the working environment of the vacuum pump, it will accelerate the wear of the bearing. In addition, long-term operation under extreme temperature or humidity conditions will also affect the performance of the bearing and reduce its service life.

5. Repair and maintenance issues: vacuum pumps require regular maintenance. If the repair and maintenance is not timely or standardized, such as improper bearing axial positioning control, changes in the axial expansion and contraction of the reserved equipment, etc., the bearing clearance will increase, resulting in movement or wear.

6. Material and manufacturing process issues: Improper material selection of equipment or parts, and substandard manufacturing processes will directly affect the quality and performance of the bearing. Inferior bearing materials themselves have unstable performance, low processing accuracy, poor wear resistance, and are prone to fatigue wear.

7. Uneven force distribution: During the operation of the vacuum pump, the wear of the shaft diameter surface is often uneven. This is mainly due to the uneven distribution of the force acting on the journal along the circumferential direction, which in turn causes the radial wear of the main journal and the connecting rod journal to be elliptical, aggravating the damage of the bearing.

In summary, in order to extend the service life of the vacuum pump bearing, regular inspection and maintenance are required to promptly detect and deal with potential problems. At the same time, during the design and manufacturing process, it is also necessary to strictly control the processing size and material selection to ensure the quality and performance of the bearing.

TKW Supply special and complete bearings for vacuum pumps as follows:

3307, 5613, C206, C209, C211, SCB212, 5204, 5205, 5206, 5207, 7615, etc.