2014年7月16日星期三

Three factors determine the service life of the mobile crane bearing


Firstly, the structure design and advanced at the same time, there will be a longer mobile crane bearing life. Bearing manufacturing after forging, heat treatment, turning, grinding and assembly processes of operation. Treatment of advanced, rationality, stability will also affect the service life of bearing. Influence of process bearing heat treatment and grinding, often fault and bearing has a direct relationship related to the quality of the products. In recent years, the deterioration of the surface layer of bearing, the grinding process is close with the bearing surface quality.
Metallurgical quality of Triple row roller slewing bearing materials is the impact of the main factors of early failure of rolling bearings. With the progress of Metallurgical Technology (such as bearing steel, vacuum degassing etc.), improving the quality of raw materials. The proportion of raw materials quality factors of bearing failure analysis has dropped significantly, but it is still one of the main factors of tower crane bearing failure. Analysis of bearing fault selection must consider whether it is appropriate or.
Bearing after installation, in order to check for proper installation, to running inspection. Small machinery can be rotated by hand, to confirm whether the rotation is smooth. Check the project caused by foreign body, scars, indentation running sluggish, due to poor installation, mounting process arising out of the bad moment is not stable, because the clearance is too small, installation error, sealing caused by friction force is too large and so on. If there is no anomaly can begin power operation.


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