In the course of the use of FAG bearings, grease is critical. If bad grease is used not only to play their rightful role, and also damage the bearing.
① oil flow observation method
Take two only measuring cup, which a Sheng to be check of lubricants, another a only empty placed in desktop Shang, will Sheng full lubricants of measuring cup cite high left desktop 30-40 cm and tilt, let lubricants slowly stream to empty Cup in the, observation its flows situation, quality good of lubricants oil stream Shi should is slender, and uniform, and continuous, if appears oil stream suddenly fast suddenly slow, sometimes has large shed, is said lubricants has metamorphic.
② hand twist method
Would lubricants twist in the repeated grinding between thumb and forefinger, better Lube hand felt the lubricity, less debris, without friction, who feel that sense of larger sand grains such as friction between the fingers, then lubricating oil impurities within, can no longer be used, new lubricant should be replaced.
③ method of illumination
On sunny days, with a screwdriver would lubricants stir, with the horizontal plane to a 45-degree angle. Against the Sun, observing oil droplets, in sunlight, you can clearly see no debris in lubricating oil for good may continue to function, if excessive debris, should be replaced with oil.
④ method of oil droplets traces
Take a clean white filter paper, drip a few drops on the filter paper, after the oil leakage, if surface has black powder, tart touch resistance, then Lube there are many impurities, a good lubricant powder-free, dry and smooth to touch, and traces of yellow.
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