Skill analysis: cement mill main bearing smooth

Source: China Bearing Network Time: 2018-01-04

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Establish and improve the inspection rules for grinding machine workers. The grinding machine should observe the oil temperature, oil quality and oil quantity of the main bearing of the grinding machine on time; especially when the temperature of the main bearing is not normal; the inspection frequency should be increased; once an abnormality is found, it should be reported in time. In the production practice; there are two major situations in which the most prone to numbness grinders cause burnt tiles: First, because the bolts of the main bearing upper cover fixed scraper loosen, the scraper and the fixed oil ring are dislocated; Smooth oil can not be scraped; and it is drenched on the hollow shaft journal through the oil sump; the bearing bush is short of oil and burned, and the second is because the dust and other impurities block the oil return path of the main bearing base; the fixed oil ring cannot be from the base oil chamber Stir on smooth oil; it will also cause burning of tiles due to lack of oil.
According to the normal use period of smooth oil; punctuality, appropriate amount of increase or replacement of smooth oil; and do a good job of storage of smooth oil and waste oil recycling operations.
Appropriate smooth oil should be selected and appropriate additives should be added; this can improve the smoothness of the main bearing of the mill. The main bearing of the mill is characterized by large load and large linear velocity; and impact and oscillation; scale of bearing bush and hollow shaft It is also large; its shape, dimensional accuracy, and further improvement in surface finish are constrained by conditions such as fabrication and processing. Therefore, the main bearing of the mill usually does not ensure complete liquid smoothness; The outstanding gap is smooth (depending on the function and strength of the dip film), which can significantly reduce the friction coefficient; reduce the wear of the bearing bush. Therefore, the primary factor depends on the temperature, the linear speed at which the hollow shaft journal works, and the load received by the main bearing. Choose a smooth oil type.
In the south; 02. 2mx6. 5m cement mill main bearing can choose N220 and N320 industrial gear oil in winter and summer. Secondly, because the working temperature of the main bearing at the discharge end of the mill is higher than the feeding end; Large; so it can be considered that the main bearing at the discharge end uses a smoother oil with a higher viscosity. In the main bearing smooth oil, it should also participate in the stearic acid polarity increasing agent to improve the strength of the gap film; to prevent the split film from breaking.

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