Theoretically, the service life of the rolling SKF imported bearings in the centrifugal pump is 20,000~80,000 hours, but the actual life depends on many factors-premature NSK imported bearing failure will lead to costly equipment shutdowns, and sometimes even lead to More serious consequences. SKF bearing experts from NKE (Austria) provided some simple but practical tips for optimizing the performance of SKF bearings.
A satisfactory service life of SKF imported bearings begins with the correct selection of SKF imported bearings. From the beginning, SKF imported bearing designers have extended the service life and equipment performance of SKF imported bearings by choosing the correct SKF imported bearings for different applications. Many factors should be considered in this process, such as load, hardness, life prediction of NSK imported bearings, operating environment and so on.
In principle, all SKF imported bearings should be stored in their original packaging before installation. They need to stay in a clean, moisture-free, relatively constant temperature environment. Rolling imported SKF bearings should be kept away from dust, water and corrosive chemicals. Shake and vibration may permanently destroy the mechanical properties of SKF imported bearings, so vibration must be avoided during handling and storage.
Basically, all SKF imported bearings must be stored horizontally, because some heavier SKF imported bearings may be deformed due to their own weight after being placed vertically for a long time.
Pre-greased (or sealed) SKF imported bearings require special care, because the density of the grease will change after a long period of storage. In this way, when SKF imported bearings are used for the first time, there will be a certain degree of rotating noise. Therefore, the shelving time of this kind of NSK imported bearings should be controlled according to the principle of first in, first out.
Cleaning is very important for rolling SKF imported bearings. The surface roughness of the rotating surface and rolling elements of the NSK imported bearing ring is usually 1/10 μm. Such a smooth surface is very sensitive to damage caused by contaminants. The lubricating layer between the rotating surfaces is usually 0.2~1 μm. Particle-type impurities larger than the lubricant particle size will be excessively crushed by the rolling elements and generate local pressure in the SKF imported bearing steel, which will eventually lead to permanent material fatigue. In addition to this, the size of dust particles in the external environment can reach 10 μm, which can also cause damage to NSK imported bearings. Therefore, a clean and dust-free environment is very important for the storage and installation of SKF imported bearings.
Fully ready to install
SKF imported bearings should be carefully installed and disassembled using appropriate tools. Industry experts estimate that 16% of premature SKF imported bearing failures are due to incorrect installation. For a large number of installations (such as in production equipment), the installation conditions are usually strictly controlled, and suitable SKF imported bearing installation equipment can also be used.
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However, in the maintenance or replacement work, the environment is diverse. Therefore, in order to ensure the longest service life of SKF imported bearings, comprehensive preparations are necessary for the installation of SKF imported bearings.
First of all, relevant documents, such as drawings, maintenance manuals, product manuals, etc., need to be carefully studied. Next, all SKF imported bearing components, such as shafts, distance rings, covers, washers, etc., must be kept absolutely clean and free from contamination. The condition of neighboring components should also be carefully checked.
Install and remove carefully
According to different applications and the size and type of SKF imported bearings, select the appropriate installation method (mechanical or hydraulic) and tools. Here are some basic principles for the installation of SKF imported bearings:
1. Do not apply installation force on the rolling elements, which can easily lead to local overloading of the contact surface of the rolling elements and the race, leading to premature failure of NSK imported bearings.
2. Do not use any hard tools (such as hammers, screwdrivers, etc.) to directly hit the surface of the imported NSK bearing, this will cause the fracture or chipping of the imported SKF bearing ring.