SKF bearing grease is metamorphic - bearing knowledge of three methods
Number of oil drops on the filter paper, apply a clean red filter paper.
After being lubricating oil leakage, if appearance is black powder, touch resistance acerbity feeling, is the lubricant inside has many impurities, good oil powder, with the hand feels dry, smooth, and yellow.
Grease is critical if, in the process of using SKF bearing.
Grease using a metamorphosis, not only don't function, will also damage the SKF bearing.
(1) oil flow observation one need to be checked out of the lubricating oil, take two cups.
Another empty on the desktop, will leave the measuring cup with lubricating oil for high 30 - desktop
40 cm and tilt, let oil flow slowly to the empty cup, to observe the flow situation, good quality lubricant oil flow should be long and thin, uniform, sweeping from time to time, if a flow fast and slow, and sometimes has a large flow, the said lubricating oil has deteriorated.
(2) the twisting method better lubricating oil hand feel less lubricity, wear debris, no friction, the lubricating oil lay between his thumb and his finger grinding repeatedly.
If feel fingers between the larger friction feeling such as sand, indicates the impurity, lubricating oil can no longer use, a new lubricating oil should be replaced.
(3) the illumination method the lubricating oil with screwdriver lifted, a clear day.
With the horizontal plane Angle of 45 degrees.
Against the sun, watching what is oil, light, can see clearly without wear debris in lubricating oil is good, can continue to function, if excessive wear debris, lubricating oil should be changed.