Date: 2013-08-20

Thrust ball bearing grease the main way to detect deterioration

　　　　Drip a few drops of water on the Strip, take a clean red filter strips. After treating the leakage of lubricant, look black powder, tart touch resistance, then the lubricant inside the impurities, and good lubricant-free powder, feels dry and smooth with your hands, and yellow marks.
　　If length of the thrust ball bearing grease hub, using thrust ball bearings in the process. Used to change the grease, not only due to play the role of, and also can damage the bearings.
　　① oil flow observation method
　　One container check of lubricants, taking two measuring cups. Another a only empty put in desktop Shang, will Sheng full lubricant of measuring cup lift high left desktop 30-40 cm and tilt, let lubricant slowly flow to empty Cup in the, observation its activities situation, quality good of lubricant oil flow Shi should is slender, and average, and rolling from time to time, if formed the oil flow suddenly fast suddenly slow, sometimes has chunks shed, is said thrust ball bearing lubricant has metamorphic.
　　② the hand-twist method
　　Better thrust ball bearing lubricant lubricant hand feel, less dust, without friction, lubricant between the thumb and index finger back and forth grinding of twist. Grit like a larger sense of friction between the fingers are marked oil impurities, can no longer be used and should be replaced with new lubricant.
　　③ method of illumination
　　Use screwdriver to lift lubricating oil, it was a clear day. With the water level angle of 45 degrees. Against the Sun, observing oil droplets, light, you can clearly see no debris in lubricating oil for good, inheritable, if too much dust, thrust ball bearing lubricating oil should be replaced.

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