Crusher is a kind of equipment for crushing materials in the form of impact.It is divided into single rotor crusher and double rotor crusher.
The specific reasons for bearing fever include:
1. When assembling the crusher, the outer ring of the bearing and the hole of the bearing seat or the inner ring of the bearing and the shaft do not match correctly.
During the assembly process, the crusher did not repair the inner hole, and measured its size, and replaced a new bearing for assembly.After testing, it was found that the temperature rise was too high.When disassembling the measurement results, it is found that the bearing seat hole has been deformed, thus squeezing the outer ring part of the bearing, leading to a smaller radial clearance of the bearing, uneven rolling of the rolling element and increased wear.The clearance between the inner ring of the bearing and the shaft is too large, the inner ring of the bearing rotates with the rolling body and the shaft, and the friction force causes the bearing heating and vibration.
2. Improper control of bearing heating temperature during crusher assembly process.
In the process of heating operation, if the temperature of the bearing heater is adjusted too high, it will cause tempering and reduce the hardness and precision, thus increasing the bearing temperature and leading to bearing wear and damage.
3. When assembling the crusher, the bearing clearance is not adjusted properly.
In practice, many installations are sometimes adjusted by feel, and the gaps are too large or too small to meet production requirements.If the axial clearance is too small, it is easy to cause bearing heating, accelerated pitting, and even lead to rolling body stuck or adhesive damage;If the axial clearance is too large, the impact force of the moving pair will increase, and the rigidity will be reduced, resulting in operation.Abnormal sounds may even cause violent vibrations or damage to the cage.
The oil seal is used to seal the rotating shaft of the mechanical equipment of the crusher. The cavity is basically fixed, so the oil seal is also known as the rotating shaft lip sealing ring.For the oil seal with the auxiliary lip, the auxiliary lip plays a dustproof role, prevents the invasion of impurities, and prolongs the service life of the oil seal, but the auxiliary lip is poor lubrication and the friction is large, which leads to the damage of the dry seal oil seal.Be sure to fill your lips with oil.