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Excessive temperature check and treatment method for bidirectional thrust ball bearing

wallpapers Tech 2021-01-18
The temperature of two-way thrust ball bearings can generally be inferred from the temperature of the bearing surface. It is more appropriate if the oil hole can be used to directly measure the temperature of the outer ring of the bearing.
Normally, the temperature transmission bearing of two-way thrust ball bearing starts to rise slowly and reaches a stable state after 1-2 hours. The normal temperature of the bearing varies with the heat capacity, heat dissipation, change and load of the machine. If lubricated and the mounting part is suitable, the bearing temperature will rise sharply and abnormally high temperature will occur. At this time, the operation must be stopped and the necessary precautions must be taken.
The thermal sensor can monitor the working temperature of the two-way thrust ball bearing at any time, and automatically alarm or stop when the temperature exceeds the specified value to prevent combustion shaft accidents.
 
Often the bearing excess can be attributed to the bearing compressor. If the double-direction thrust ball bearing rotates continuously for a long time at a temperature exceeding 125°C, the bearing life will be reduced. Causes of high temperature bearings include insufficient or excessive lubrication, compression. Containing impurities inside, excessive load, bearing wear ring, insufficient clearance, and high friction caused by oil seal, etc.
 
The running state of the machine that needs to be checked, the two-way thrust ball bearing is the focus of attention, and it has become more and more important to prepare a thorough inspection plan. Because it is the most important condition monitoring of all rotating mechanical components to prevent bearing damage and prevent unplanned maintenance equipment from causing early detection of bearing damage during equipment shutdowns, an important part of the home.
 
During the operation of two-way thrust ball bearings, sometimes the bearing surfaces will be squeezed into foreign hard particles or hard foreign bodies or metal surface wear debris, which will cause furrow-like scratches on the bearing. These hard foreign bodies pass through the lubricating medium. Into the inside of the bearing, through the continuous operation of the bearing, local friction generates heat, which is easy to cause local deformation of the friction surface and friction micro-welding phenomenon, and even local melting may occur, and finally, cause a seizure.
 
The causes of bearing fracture are two major factors: defect and excessive. When the external fracture exceeds the material strength limit, the parts will break and extend. During the operation of the two-way thrust ball bearing, too many defects such as tissue and local burns will also occur. Defect destruction. Generally, we can inspect most of the fractures through the instrument. In most cases, most of the bearing fractures are failures caused by overload.

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