How many methods are there to determine the deterioration of slew bearing grease?
The good operation of the slewable bearing is inseparable from the help of grease, and the quality of the grease can also affect the operating effect of the slewable bearing to a certain extent. During the operation of the bearing, in order to provide better performance, grease is generally used to lubricate the bearing, which can reduce the friction and temperature increase of the bearing operation. If the grease is deteriorated, it will not only fail to play the relevant role, On the contrary, it is more detrimental to the use of bearings. Today, the editor will tell you about the methods to judge the deterioration of slew bearing grease?
1. Oil flow observation method
Take two measuring cups, one of which contains the lubricating oil to be checked, and place the other empty on the table. Lift the measuring cup filled with lubricating oil 30-40 cm away from the table and tilt it to let the lubricating oil slowly flow into the empty cup. During the operation, observe the flow situation. Good-quality lubricating oil should flow in a slender, even, and continuous manner. If the oil flow is fast and slow, and sometimes large chunks flow down, it means that the lubricating oil has deteriorated.
2. Oil drop trace method
Take a piece of clean white filter paper and put a few drops of oil on the filter paper. After the lubricating oil leaks, if there is black powder on the surface and a sticky feeling when touched by hand, it means that there are many impurities in the lubricating oil. The lubricating oil has no powder, feels dry and smooth to the touch, and has yellow marks.
3. Hand twisting method
Twist the lubricating oil between your thumb and index finger and grind it repeatedly. The better lubricating oil will feel lubricating, less wear debris, and no friction. If you feel a large friction feeling such as sand between the fingers, it means that the lubricating oil is lubricating. There are many impurities inside and cannot be used again. New lubricating oil should be replaced.
4. Illumination method
Use a screwdriver to lift up the lubricant and make it at a 45-degree angle to the horizontal surface. Look at the light and observe the oil droplets. Under the light, if you can clearly see that there is no wear debris in the lubricating oil, it is good and can continue to function. If there are too many wear debris, the lubricating oil should be replaced.
The above are the four ways to judge the deterioration of slew bearing grease. I hope it will be helpful to everyone. In addition, be careful not to mix incompatible greases. If two incompatible greases are mixed, usually the consistency It will become soft and may cause damage to the bearing due to easy loss of grease. If you don't know what kind of grease the bearing originally used, you must completely remove the old grease inside and outside the bearing before adding new grease.
