The wear of the vacuum pump is essential, so what is the cause of its wear? Let's take a look at the factors that cause vacuum pump wear:
The wear of the journal surface of the vacuum pump is uneven. The radial wear of the main journal and the connecting rod journal is mainly elliptical, and the wear parts of the main shaft are corresponding to each other, that is, the wear of each main journal is close to the journal side of the connecting rod; The wear of the connecting rod journal is also close to the side of the main journal. The crankshaft journal also has tapered wear in the axial direction. The elliptical wear of the journal is caused by the uneven distribution of the force acting on the journal in the circumferential direction.
When the engine is working, the combined force of the connecting rod journal always acts on the inner side of the connecting rod journal, and the direction is outward along the radius of the crankshaft, causing the inner side of the connecting rod journal to wear large and form an elliptical shape. The reason for the taper wear of the connecting rod journal is that the oil passage leading to the connecting rod journal is inclined. When the vacuum pump is rotated, the mechanical impurities in the lubricating oil are concentrated on the connecting rod journal under the action of the centrifugal force. On one side, the wear of the side journal is accelerated, and the wear of the connecting rod journal is tapered.
The factors that affect the wear of the vacuum pump are what we should know. Only when it is used is it more convenient, which is more conducive to our use.