Detailed Explanation: Cone Crusher Bearing Repair Method
Source: China Bearing Network | Date: February 15, 2013
The thrust bearing in a cone crusher plays a critical role in supporting the hollow eccentric shaft and reducing friction during operation. Proper installation and maintenance of this component are essential to ensure smooth performance and prevent issues like "speeding" or misalignment. The thrust bearing consists of multiple contact surfaces that require precise grinding and alignment to maintain optimal functionality. During the repair process, the upper circular plate is connected to the hollow eccentric shaft via a pin, while the lower three-claw circular plate is embedded into the base cover. The middle circular plates slide against each other, forming three sets of contact surfaces. These surfaces must be carefully ground to ensure even pressure distribution and proper lubrication. The grinding process typically involves two stages: rough scraping and fine scraping. First, the flatness of the contact surfaces is checked using red lead powder. By applying it evenly and checking for contact points in a clockwise direction, you can identify areas that need adjustment. Repeating the process in the opposite direction ensures thorough coverage. For rough scraping, a special flat-blade scraper with a 25mm width is used, ensuring consistent touch points across the surface. Once the points are evenly distributed, oil storage grooves are added, especially in the center of the circular plates. It’s important to note that improper grinding or uneven contact points can lead to poor performance, including excessive wear on the three-claw circular plate and the friction plate. Regular inspection and maintenance are necessary to avoid such problems and ensure long-term reliability. When installing the thrust bearing, the three-claw circular plate should be placed in the base cover first, with any casting burrs or sand removed. A thin layer of oil is applied to check the flatness. If oil splashes from the edge, it indicates gaps that need to be addressed. This process is repeated for the middle and upper plates before final assembly. Finally, the hollow eccentric shaft, spherical seat, and main shaft are installed. Proper alignment of the gear teeth and clearances between components are measured to ensure correct operation. Adjustments may be required if the gap exceeds 3mm, such as modifying the thickness of the gasket or adjusting the height of the base cover. Maintaining the precision of the thrust bearing is crucial for the overall efficiency and longevity of the cone crusher. Regular checks and timely repairs help prevent unexpected downtime and costly damage. Previous: Ball Bearing Next: Protection to Make Bearings "A Brilliant" Related Bearing Knowledge: - Diagnosis and management of bearings determine the criteria and methods for repairing INA bearings. - Understanding the failure mechanisms of bearings and the causes of sliding bearing wear. - Methods for determining bearing vibration and temperature. This article is sourced from China Bearing Network. Please visit http://www.chinabearing.net for more information.
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