Bearing seat wear has always been a problem that troubles enterprise equipment managers. I have seen many times that some netizens have consulted why the bearing seat wears? What to do if it is worn out? The editor today took the wear of the bearing housing of the gear box of the cold rolling mill reducer as an example to explain the reasons for the wear of the bearing housing and how to repair the wear.
Case of wear of bearing housing of gear box of reducer of cold rolling mill:
During the production and operation of an enterprise, the two output shafts of the main reduction gear box of an enterprise were found to have different levels of vibration through the online detection device. After the gear box was dismantled, it was found that the outer bearing seats of the two output shafts and the outer ring of the matching bearing appeared Wear marks, the depth of wear is about 0.3mm. The reducer has a three-layer structure of upper, middle and lower, the output shaft is distributed up and down, the input speed is 0-500 / 1200r / min, the reduction ratio is 2.92 / 1.513, and the bearing model is 24152.
Why are there problems with bearing housing wear?
Reducer gearboxes are widely used in industrial enterprises. In the steel industry or non-ferrous metal rolling production lines, large gearboxes are used, and they are an important mechanical component. The main gearboxes of cold rolling mills are mainly The function is to transfer the original power of the motor to the rolls of the rolling mill through gear speed change or speed regulation and make it get the corresponding speed. The gear box of the cold rolling main reducer has its particularity during the production and operation process. The two output shafts rotate in the opposite direction synchronously. During the production process, the impact and torque transmitted by the rollers are quite large. In this case, the bearing housing is subject to squeeze. If the pressure is large, eccentric wear is easy to form.
The gearbox of this enterprise’s reducer has been used for a long time, and from the bearing room worn on the site, the machining accuracy of the gearbox has problems at the factory. There are traces of plating on the surface of the bearing seat. Rings and bearing seats wear out and cause equipment vibration.
How to repair the bearing seat wear problem?
1. Dismantle and inspect the gear box components to confirm the wear status and wear amount of each bearing seat;
2. Surface treatment: first use the oxygen acetylene flame to roast the bearing seat, then use the polisher to polish the bearing seat to be repaired, and then use absolute ethanol to clean the polished bearing seat surface;
3. Blend the carbon nanopolymer material in proportion, then apply the blended material to the repaired part, and use the knife edge ruler to scrape and shape along the reference surface;
4. Heat curing;
5. Use the new bearing to grind the repaired bearing seat to show the points and remove the high points;
6. Apply the material to the inner surface of the bearing housing twice, and apply the carbon SD7000 release agent to the outer ring of the bearing;
7. Reinstall the gear shafts and other parts and gear boxes of each layer, and start the operation.
More info:https://www.cnzxzc.com/
Case of wear of bearing housing of gear box of reducer of cold rolling mill:
During the production and operation of an enterprise, the two output shafts of the main reduction gear box of an enterprise were found to have different levels of vibration through the online detection device. After the gear box was dismantled, it was found that the outer bearing seats of the two output shafts and the outer ring of the matching bearing appeared Wear marks, the depth of wear is about 0.3mm. The reducer has a three-layer structure of upper, middle and lower, the output shaft is distributed up and down, the input speed is 0-500 / 1200r / min, the reduction ratio is 2.92 / 1.513, and the bearing model is 24152.
Why are there problems with bearing housing wear?
Reducer gearboxes are widely used in industrial enterprises. In the steel industry or non-ferrous metal rolling production lines, large gearboxes are used, and they are an important mechanical component. The main gearboxes of cold rolling mills are mainly The function is to transfer the original power of the motor to the rolls of the rolling mill through gear speed change or speed regulation and make it get the corresponding speed. The gear box of the cold rolling main reducer has its particularity during the production and operation process. The two output shafts rotate in the opposite direction synchronously. During the production process, the impact and torque transmitted by the rollers are quite large. In this case, the bearing housing is subject to squeeze. If the pressure is large, eccentric wear is easy to form.
The gearbox of this enterprise’s reducer has been used for a long time, and from the bearing room worn on the site, the machining accuracy of the gearbox has problems at the factory. There are traces of plating on the surface of the bearing seat. Rings and bearing seats wear out and cause equipment vibration.
How to repair the bearing seat wear problem?
1. Dismantle and inspect the gear box components to confirm the wear status and wear amount of each bearing seat;
2. Surface treatment: first use the oxygen acetylene flame to roast the bearing seat, then use the polisher to polish the bearing seat to be repaired, and then use absolute ethanol to clean the polished bearing seat surface;
3. Blend the carbon nanopolymer material in proportion, then apply the blended material to the repaired part, and use the knife edge ruler to scrape and shape along the reference surface;
4. Heat curing;
5. Use the new bearing to grind the repaired bearing seat to show the points and remove the high points;
6. Apply the material to the inner surface of the bearing housing twice, and apply the carbon SD7000 release agent to the outer ring of the bearing;
7. Reinstall the gear shafts and other parts and gear boxes of each layer, and start the operation.
More info:https://www.cnzxzc.com/
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