Drip a few drops on the filter paper, take a clean red filter paper. Subject to oil leakage, if the appearance of a black powder, a resistive touch astringent sense, then the lubricant inside has a lot of impurities, good lubricating powder-free, hand feels dry and smooth, and yellow traces.
TIMKEN bearing grease hub if the length of regular use TIMKEN bearings in the process. Using the transformation of grease, not only achieve its proper role, away will damage the bearings.
① oil flow observation
One of the checks to be filled lubricant, take two measuring cup. Another empty on the table, will be filled with oil cup held high 30-40 cm away from your desk and tilt, allowing oil to flow slowly empty cup, observe their activities, good quality lubricating oil flow should be slim, average, stretching from time to time, if thrown oil flow unsteadiness, sometimes with large shed, then said TIMKEN bearing lubricant has gone.
② hand twist method
TIMKEN bearing lubricant better hand feel lubricity, less wear debris, no friction, the oil twist between the thumb and index finger repeatedly grinding. If you get flu like sand between your fingers greater sense of friction, then the marked lubricating oil impurities, can not be reused and should be replaced with new oil.
③ photopheresis
Use a screwdriver to oil lifted, the sky on a clear day. Angle of 45 degrees with the horizontal. Control sunlight, droplets observed cases, light, can be clearly seen in the non-oil debris as well inheritable role, if too much debris, replace TIMKEN bearing lubricant.



Other News:
TIMKEN bearing grease deterioration of the main ways to detect whether
Burning diesel engine bearing precautions
timken bearings to avoid a four-point temperature is too high to Note
Type selection of rolling bearings in industry
NSK bearing selection with attention problems
NSK Bearings installed correctly on the importance of noise reduction
TIMKEN bearings maintenance focused analysis
NSK Bearings choice quality requirements