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In theory, the service life of the rolling bearing in a centrifugal pump is 20,000 to 80,000 hours; however, the actual life depends on many factors. Premature bearing failure will lead to high-value equipment strikes; sometimes even more serious results will be incurred. . /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Satisfactory bearing life begins with the correct bearing selection. From the beginning; the bearing painter extends the bearing life and equipment utility by selecting the right bearing for different applications. This process has to consider many elements; for example, loads , hardness, bearing life guess, operating environment, etc.
Proper storage in principle; all bearings should be kept in their original packaging before the equipment. They need to be left in a hygienic, moisture-free, relatively constant temperature environment. Rolling bearings should be kept away from dust, water and corrosive chemicals. Swinging and sensation may permanently damage the mechanical function of the bearing; thus it is necessary to prevent sensation during handling and storage.
Hygiene is important for rolling bearings. The surface roughness of the bearing ring transition surface and the tumble element is typically 1/10 μm; such a smooth appearance is very sensitive to damage from contaminants. The smooth layer between the transition surfaces is typically zero. 2~1 μm; particulate impurities larger than the particle size of the smoothing agent will be over-rolled by the rolling element and partial pressure will occur in the bearing steel; eventually it will cause permanent data fatigue. In addition to this; dust particles in the external environment The size can reach 10 μm; it will also damage the bearing. Therefore, the clean and dust-free environment is very important for the storage and equipment of the bearing.
All preparatory equipment bearings should be carefully equipped with equipment and disassembled. Professional professors estimate; 16% of premature bearing failure conditions are due to incorrect equipment. For many equipment (such as in production equipment) Speaking; generally must strictly control the conditional equipment; also can choose the appropriate bearing equipment.
However; in the protection or exchange work; the environment is diverse. Therefore; to ensure the longest bearing life; all preparatory work is necessary for bearing equipment.
Careful equipment and disassembly should be based on different applications and bearing sizes and types; choose the appropriate equipment method (mechanical or hydraulic) and things. Here are some basic principles of bearing equipment:
1. Do not apply device forces on the roll elements; this simply causes partial overload of the roll elements and the touch surface of the race; it then causes premature failure of the bearings.
2. Do not use any hard things (such as hammers, screwdrivers, etc.) to directly knock on the bearing's exterior; this will cause cracking or chipping of the bearing ring.
3. Adhere to the guidance of equipment suppliers who are heavily stressed.
The painters should be aware that depicting outstanding bearing orientations can greatly simplify bearing equipment and disassembly; thus reducing the cost of protection.
Proper and appropriate smoothing agent can block the appearance of metal bearings (such as roll elements, bearing rings and bearing covers); thus reducing conflicts, metal parts and pollution and impurities. There are a variety of smoothing agents (including grease, oil) And solid) can be used for different operating conditions. The correct choice of smoothing agent is very important for the service life of extended bearings and equipment.
The bearing life is determined by the life of the smoothener.
Because the effect of the bearing is critical; it is advocated to participate in the condition monitoring function in its depiction stage. Important parameters of the machine operation; for example, sensation and noise can be monitored continuously; preventive measures are taken before the unpredictable and valuable equipment strikes
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Detailed analysis: How to extend the "bearing life"
Source: Bearing network time: 2014-07-31