The working environment of jaw crusher is very harsh, coupled with the different types of ore processed, the wear of wearing parts is a common occurrence, especially the core bearing of the crusher is more prone to wear. How to do jaw crusher bearing replacement work correctly?
The commonly used method for replacing bearings is the impact method. When replacing the shaft head, it is necessary to protect the shaft head from damage: a sleeve with a thickness of 40 mm on the bearing surface can be made on the shaft head to prevent the flywheel from directly hitting the eccentric shaft and causing damage Spindle head. Secondly, the position of the impact bearing should be selected properly so that the bearing is disengaged from the moving cavity first. If the axis is offset, the impact is continued after being aligned until it leaves the moving cavity. Third, when hitting the eccentric shaft with a crane load, the centerline of the flywheel should be kept as straight as possible with the eccentric centerline.
After the worn out bearings are replaced, new bearings need to be assembled and installed. At this time, there are two points to note:
1. When installing the eccentric shaft and the bearings above it, move it to a stand. Place a flywheel below the pad to make it a certain height from the ground. Try to make the axis of the cavity of the mover be perpendicular to the horizontal plane. Burn the firewood under it, let the flame pass through the cavity, heat the moving jaw cavity for about 1.5 hours, and then lift the eccentric shaft to fall vertically into the cavity. In order to ensure that the bearing is installed accurately, the oil seal, end cover and retaining ring of the bearing are installed in advance at the shaft end of the lifting end, and then an external bearing is installed.
2. After installing the eccentric shaft, keep it still, and then install another flywheel. Four suitable double-headed bolts can be used, one of which is placed in the four screw holes of the shaft head. Then, lift the take-off wheel horizontally, pay attention to the up and down direction of the flywheel, and slowly put it down. The shaft hole passes through the four bolts. The flat keys are aligned with the keyway. Put on the nut, press down on the flywheel, and hit the flywheel at the same time, so that the flywheel is installed quickly.
As a supplier with nearly 30 years' manufacturing, Shuguang Heavy Machinery also produces and sells hammer crushers, impact crushers, vertical shaft crushers, cone crushers, compound crushers, Raymond mills, high pressure mills. Powder machine, vertical mill, ultra-fine grinding machine, ball mill, double-shaft shredder and other heavy equipment crusher. Feel free to contact us for more details.
Factory Address: Longjiang West Road, Shangjie District, Zhengzhou City
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