Due to the impact crusher (sand making machine) works in harsh conditions, exacerbate the rotor bearing wear it long term. Without rotor, the rotor is irreplaceable for the crusher, the crusher can not work. But it is also fragile, the bearing switch is not only expensive, but also difficult, which often resulted the production halts. How to take effective measures to improve the life of impact crusher rotor bearing is the largest concern for our customers. We need to pay more attention to the normal conditions of impact Crusher (sand making machine) rotor: 1) Rightly the rotor bearing model choice.
Double row spherical roller bearings have strong bearing capacity, aligning performance these advantages, so this bearings is many peoples good choice. In addition, the calculation of the selected bearing life should be 5000 10000h. (2) Improve the crusher bearing force status. The role of impact loading on the bearings depends on the impulse acting on the rotor and the bearing support flexibility. Increased flexibility will support bearing reduces the impact load bearing. for This, we can add the appropriate thickness of rubber between the bearing and the support frame board in order to improve the bearing support flexibility. Because of adding the rubber plate, increasing the support softness, thereby absorbing a part of the vibration energy and improve the bearing condition, finally achieved the purpose of prolonging lifetime stress.
(3) Reasonable adjust the cooperation relationship between each other. The main force impact crusher rotor bears is the impact load, each part of roller cone bears different load impact, the roller cone which under the force of unit load impact bears the largest force, when the inner and outer ring raceway contacts with the rolling body, the force is the largest. Duo to the non-stop rotation of the inner ring work, the point of contact on the track will recycle from the maximum force to the minium force, therefore the inner ring is required to cooperate tight, so it will not appear the phenomenon of one point staying in the maximum force point. While the outer ring is different, the outer ring is relatively fixed, the maximum force points will stay in a fixed point, therefore, if the outer ring is loose, it is likely to move slightly under the impact load, thus increase the maximum force points, and extend the life of the outer ring.
