Bearings and bearing grease routine examination whether the deterioration of the subject
|
| Time：2016.08.31 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
|
In the process of using the bearing grease it is critical. If you use a grease deterioration, not only would not achieve its proper role, but also damage the bearing away.
1. The oil flow observation
Take two cups, one containing lubricating oil to be checked, the other empty on the table, the cup will be filled with lubricating oil held high 30-40 cm away from the desktop and tilt, allow oil to flow slowly empty cup the observed flow, when good quality lubricating oil flow should be thin, uniform, continuous, if there is oil flow unsteadiness, and sometimes there are chunks shed, said that the lubricating oil has gone.
2. Hand twist method
The lubricant twist between the thumb and index finger repeatedly grinding, good oil lubricity hand feel, less wear debris, friction-free, if they feel a greater sense of friction like sand between the fingers, it means that the lubricant inner impurities, can not be reused and should be replaced with new oil.
3. photopheresis
On a clear day, the lubricating oil lifted with a screwdriver, angle of 45 degrees with the horizontal. Control the sun, to observe the situation of oil droplets, in the light, you can clearly see the lubricating oil is no good wear debris may continue to effect, if too much debris, replace oil.
4. traces of oil droplets law
Take a clean white filter paper, drip a few drops on filter paper, until lubricant leakage, if the surface of black powder, astringent sense of touch there is resistance, then the impurity inside the lubricating oil has a lot of good lubricating powder-free, hand feels dry and smooth, and the yellow marks.
Bearings to be delivered before the routine examination before removing its seal packaging, and immersed in a 3% oil washing gasoline or acid-free kerosene, rotating the outer ring and carefully rinse cage, rolling elements and raceways at the junction, require any hidden parts of the original traces of oil residue thoroughly cleansed. Bearings should be appended after cleaning clean cleaning Youlin dry, lined with clean neutral liner on the bench to dry, or dry slowly in the far infrared oven. After Youlin dry self-cleaning as well as drying or drying, the whole process can not be rotated bearing rings, cage or any rolling elements.
Have been dry or dried bearing, should be required to be delivered immediately check the oil drops, then the outer surface of the bearing oil film without protection, the entire inspection process are not allowed direct contact with hand skin, the operator should wear clean gloves, or hand painted with rust inhibitor, but must avoid the hands of rust mixed into the bearing rolling surface, otherwise it would be the measurement result deviations occur.
After checking bearings, should be delivered immediately or rust inventory processing, the entire inspection process should also pay close attention to the completion, in order to avoid corrosion caused lasted too long. Note that the use of pure gasoline without oil cleaning can also cause corrosion. These must also gauge block, standard parts and inspection and measuring instruments used in the co-located before the inspection, bearing in checking the premises of a metal plate, which can quickly make these objects uniform temperature and room temperature of.
Obviously, only strict Do the preparatory work in order to ensure accurate test results, the bearings will not rust throughout the inspection process.
Bearing Grease whether the deterioration of the three inspection methods
Drip a few drops on the filter paper, take a clean red filter paper. After the lubricating oil leakage, if the appearance of a black powder, astringent sense of touch there is resistance, then the lubricating oil which has a lot of impurities, good lubricating powder-free, hand feels dry and smooth, and the yellow marks.
If grease is critical, the use of imported bearings in the process. Use the transformation of the grease, not only would not achieve its proper role, but also damage the bearings away.
① oil flow observation
One of the lubricating oil to be filled check, take two cups. The other empty on the table, the cup will be filled with lubricating oil held high 30-40 cm away from the desktop and tilt, allow oil to flow slowly empty cup and observe the flow of good quality lubricating oil flow when it should be thin, uniform, continuous from time to time, if there is oil flow unsteadiness, and sometimes there are chunks shed, it said that the lubricating oil has gone.
② hand twist method
Hand feel better oil lubrication, less wear debris, no friction, lubricant oil twist between the thumb and index finger repeatedly grinding. If they feel a greater sense of friction like sand between your fingers, then indicated in the lubricating oil impurities can not be reused and should be replaced with new oil.
③ photopheresis
Use a screwdriver to lubricating oil lifted, sunny days. 45 degrees with the horizontal. Control the sun, to observe the situation of oil droplets, the light, you can clearly see the lubricating oil is no good wear debris may continue to effect, if too much debris, replace oil.
|
|
