1.Grease Lubrication
Relubrication of the bearings should be carried out during planned equipment downtimes and replenished regularly. At the same time, old grease should be removed or squeezed out through the drain hole. Before adding new grease, the grease nipple should be wiped clean. If there is no grease nipple in the bearing housing, the bearing cap or end cap should be opened and the old grease removed. After cleaning, fresh grease of the same type should be added.
Regularly check the oil level and quality of the lubricant. In general, the normal oil level should be within 1/3-2/3 of the equipment oil level window or mark. The oil is replenished by means of an oil cup, and the displayed oil level represents only the replenishment capacity, while the oil level of the bearing box meets the operating requirements. If the oil level in the oil cup is less than 1/4 of its total volume, consider replenishing the oil.
Check and replenish the oil. Remove a small amount of oil as a sample and compare it to fresh oil. The competent authority may consider performing an oil quality test to ensure that the oil is of satisfactory quality. If the sample looks like a cloud, it may be the result of mixing with water, often referred to as oil emulsification. At this point, the oil should be replaced. If the sample darkens or thickens, it may indicate that the lubricant has begun to carbonise. The old lubricant should be completely replaced. If possible, the oil lines should be flushed with fresh lubricant. When replacing the lubricant, make sure that the old and new lubricants are replaced with the same type and that the oil level is as required.
Use an oil bath lubrication system. If the oil temperature is below 60 (140) and the lubricant is not contaminated, the lubricant can be changed once a year. If the oil temperature is 60-100 (140-210), the lubricant needs to be changed four times a year. If the oil temperature is 100-120 (210-250)
Correct installation and maintenance are important factors in the normal operation of the bearings. At the same time, care must be taken to keep the bearings clean. The bearings must be protected from contaminants and moisture and must be properly mounted and lubricated. In addition, the design of the bearing arrangement, the condition of the oil seals, the form and replacement interval of the lubricant, and special maintenance play an important role and must be taken into account.