Sandvik Cone Crusher eccentric bushing

Detailed Introduction to the Eccentric Sleeve Bush of Cone Crusher The eccentric sleeve bush of the cone crusher is an important component. It is typically installed between the eccentric sleeve and the frame bush, serving the functions of reducing friction, providing support, and offering protection. The main roles of the eccentric sleeve bush include: 1. Reducing wear between the eccentric sleeve and the frame: During the operation of the crusher, the eccentric sleeve constantly rotates and swings, creating relative motion with the frame. The bush can lower the friction coefficient between the two, reduce wear, and extend the service life of the eccentric sleeve and the frame. 2. Supporting the movement of the eccentric sleeve: Ensuring that the eccentric sleeve can rotate and swing stably to guarantee the normal operation of the crusher. 3. Protecting the eccentric sleeve and the frame: Preventing direct contact and wear between them, reducing damage caused by friction and impact. When installing the eccentric sleeve bush, the following points should be noted: 1. Preparation before installation: Install the adjustment pad into the bottom cover, and then install the thrust bearing on the adjustment pad in sequence using screws. 2. Ensuring the stable installation of the eccentric shaft: When installing the eccentric shaft, the boss of the lowest pad should be clamped in the groove of the bottom cover for firmness. 3. Correctly fixing the thrust bearing pad: Use screws to fix the top pad of the cone crusher thrust bearing on the eccentric shaft sleeve. 4. Careful hoisting: Then, use the special lifting lug on the gear to load it into the bush. 5. Gap adjustment: During the installation process, it is necessary to carefully check the gap size between the eccentric shaft sleeve of the cone crusher and the straight bush of the frame, as well as the up and down gap between the main shaft and its sleeve. The gap between the eccentric shaft sleeve and the straight bush should be consistent up and down. The gap between the main shaft and the sleeve should allow for balanced contact to ensure the normal rotary and swing movement of the eccentric shaft. These gaps should be strictly installed in accordance with the design plan. 6. Measuring the gear meshing gap: After the eccentric sleeve, cone gear, and other components are installed in the frame, measure the meshing gap of the gear by using the lead pressure or shaft rotation method. Since the gap between the eccentric shaft sleeve and the frame bush is relatively large, and the eccentric shaft sleeve always rotates against the straight bush, the center of the cone gear of the cone crusher will move in a circular motion with half of the gap between the eccentric shaft sleeve and the frame bush as the radius. Therefore, when actually obtaining the gap value, it should be slightly larger. If the side gap of the gear meshing is too small, it will cause additional loads on the gear and the transmission shaft. The quality and installation accuracy of the eccentric sleeve bush have significant influences on the performance and stability of the cone crusher. During the usage process, it is necessary to regularly inspect the wear condition of the bush and replace the severely worn ones in a timely manner to ensure the normal operation of the crusher. Meanwhile, choosing high-quality and wear-resistant bush materials also helps improve the working efficiency and service life of the crusher.