In the course of use of NSK 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.
1, lubricating oil quality evaluation: through the detection of various physical and chemical analysis of industrial lubricants, lubricants based on countries and enterprises, quality standards, on the assessment of the quality of lubricants, guiding the enterprises to select good quality and sound of lubricant products.
2, fuel oil quality evaluation: through the analysis of diesel oil, heavy fuel oil, such as physical and chemical indexes detection, based on national and international quality standards for fuel oil, to assess the quality of fuel oil, and analysing the impact of fuel quality on mechanical failure.
3, equipment lubrication condition evaluation: through the regular tracking of equipment lubricants monitoring the timely detection of deterioration and pollution cause of oil equipment, evaluation equipment of lubrication, guiding the enterprises to adopt reasonable lubrication and oil changing cycles. 4, equipment wear fault diagnosis: by equipment in used oil analysis on wear of metal particle detection, diagnostic equipment mainly wear condition of the friction pairs and reason, guiding the enterprises to take timely and on-condition maintenance measures to ensure safe operation of equipment.
5, equipment lubrication technology consultation: to provide equipment selection of oils, oil maintenance, lubrication system configuration technical advice, also provide on-site technical service for equipment lubrication management, guiding the enterprises to establish equipment lubrication and condition based maintenance system.


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