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What to do if the temperature of the jaw crusher bearing is abnormal

Author: Time:2019-12-02
Jaw crusher is a commonly used crusher equipment. For jaw crusher, bearing is one of the most important parts of the machine. Once the bearing is damaged, it will cause the equipment to stop. In the stone production process, the abnormal temperature rise of the bearing is one of the common failures. Here are the reasons for the abnormal temperature rise of the bearing:

1.Bearing wear
Serious bearing wear will change the dimensions of the bearing's outer ring, inner ring, cage, rolling elements, etc., and may also lead to an increase in the clearance of the bearing fit, reducing the accuracy of the bearing's operation, which will cause the temperature of the bearing to rise and increase noise In severe cases, it may cause the bearing to heat up, burn out, or even cause the bearing to bend.

2.The clearance is too small due to poor bearing quality
The bearing clearance is too small and does not reach the specified value, which will cause the bearing to heat up, the temperature will rise, and an abnormality will occur during the bearing operation.

3.The axial positioning of the bearing is incorrect
The axial positioning of the bearing is wrong, and the bearing gland or labyrinth ring is not installed properly, which will cause the eccentric axial side to move during operation, which will reduce the bearing clearance and cause the bearing to heat up.

4.The machining error of the movable jaw bearing hole exceeds the standard value
When the bearing hole machining error exceeds the design allowable value, the coaxiality error of the outer ring of the bearing will be too large, which will cause the bearing clearance to become smaller and the bearing to heat up.

5.Spindle machining problems
The journal error on both sides of the bearing spindle exceeds the allowable value of the design, which causes the coaxiality error of the bearing inner ring to be too large, which causes the bearing clearance to become smaller and the bearing to heat up.

6, oil holes are blocked, too little or too much oil
The oil hole of the crusher is blocked, and too much or too little oil will cause the bearing temperature to rise and cause abnormalities. Therefore, you must read the instructions carefully, operate strictly in accordance with the instructions, and refuel regularly.

7.Inaccurate component processing
If the machining accuracy of the bearing seat fails to meet the standard requirements, such as the tolerance of the bearing seat hole tolerance, too much loosening will cause looseness, and too small will cause the bearing clearance to be too small, which will cause the bearing to heat up.

8. Improper selection of lubricant
When selecting the lubricant, refer to factors such as operating temperature, lubrication time, and speed index. When the viscosity of the lubricant is not suitable, it will be difficult to form an oil film, so the heat in the bearing cannot be taken away, which will cause the bearing to heat up.
 

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