A rotor bearing model

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Since the long-term impact crusher work in harsh conditions , will exacerbate the rotor bearing wear . However , the rotor bearing is not only expensive , but also very difficult to replace , easy to cause lost production . Therefore , we must first correct choice of rotor-bearing models.

Double row radial spherical roller bearings with high load capacity , self-aligning and good performance , so much impact crusher bearings using this as a rotor bearings. In addition, the calculation of the bearing life should be selected to 5000-10000h appropriate.

Second, the rotor bearing force status

The role of impact crusher impact load on the bearing , depending on the role of the impulse on the rotor and bearing support flexibility . Increasing the bearing support flexibility, will reduce the role of impact loads on the bearings .

This can be done in between the bearing and the support frame add the proper thickness of the rubber sheet , in order to improve the support bearing softness . Because the added rubber sheet , flexible support can be increased , the absorption part of the vibration energy and improve the bearing stress condition to prolong the service life.

Third, rotor balancing accuracy

Impact crusher rotor quality , high speed , the Impact Crusherbody and mounting plate hammer casting deviation caused after mass deviation would create an imbalance in the rotor rotates the centrifugal force . The centrifugal force generated forced vibration of the machine , resulting in damage to the bearings and other parts , so the crusher rotor balance test must be carried out .

If the rotor diameter is small, can change the blocking plate on both sides of the rotor body to balance mass ; if the rotor diameter is large, the weight can be welded to the wall of the rotor body . To prevent falling counterweight vibration process can be cast in place several rows of slots , the counterweight mosaic , and then welded on , so not only strong and beautiful.

Fourth, with the relationship between the rotor bearing

Impact breaking the bearing of the rotor is mainly working under impact load, the load rolling body suffered size is not the same, is under impact loading force that the maximum rolling force , inner and outer ring raceway is here and when rolling contact with the biggest force .

Kept turning the inner work , the contact point on the track by the maximum force and then to force the minimum continuous loop , so the need to make some inner tie tight , so it does not produce a point remain in force the phenomenon of the maximum point . The outer ring is different , the outer ring is relatively fixed, the maximum point of the force will stay in a fixed point, so if the outer rings with loose, it is likely to impact the next generation in small movements , thereby increasing the maximum force point , extend the life of the outer ring .