If the grease used in SKF tapered roller bearing is expired and cannot be used, if you do not pay attention, it will cause great damage to SKF tapered roller bearing. Therefore, you must learn how to judge whether the grease can be reused.
Take a clean white filter paper and drop several drops of oil on the Skf Tapered Roller Bearing filter paper. After the lubricating oil leaks, if there is black powder on the surface and there is a sense of astringency by hand,it indicates that there are a lot of impurities in the lubricating oil. The good lubricating oil has no powder. It is dry and smooth by hand and shows yellow traces.
Twist the lubricating oil between the thumb and index finger and Skf Tapered Roller Bearing grind it repeatedly. The better lubricating oil hand feels lubricity, less wear debris and no friction.If it feels a large friction feeling such as sand particles between the fingers, it indicates that there are many impurities in the Skf Tapered Roller Bearing lubricating oil and it can not be used again. It should be replaced with a new lubricating oil.
On a sunny day, lift up the lubricating oil with a screwdriver at an angle of 45 degrees to the horizontal plane. Observe the condition of oil drops according to the sunlight. In the light, it can be clearly seen that there is no wear debris in the lubricating oil, which can inherit the function. If there are too many wear debris, replace the lubricating oil.