How to check whether the deterioration Bearing Grease '

Kunshan Bearing 1. Illumination method: On a clear day, the oil lifted with a screwdriver, angle of 45 degrees with the horizontal. Control sunlight, observe droplets situation, in the light, you can clearly see the oil is no debris is good, can continue to function, if too much debris, replace the oil.
2 droplets traces France
Take a clean white filter paper, drip a few drops on the filter paper until the oil leak, if the surface has black powder, a resistive touch astringent sense, then the lubricant inside has a lot of impurities, good no lubricant powder, hand feels dry and smooth, and yellow marks.
3 oil flow observation
Kunshan backing bearings  Take two measuring cups, one containing the lubricating oil to be checked, the other empty on the table, will be filled with oil cup held high 30-40 cm away from your desk and tilt, allow oil flow slowly to the empty cup to observe the flow of good quality lubricating oil flow should be slender, uniform, continuous, if there is oil flow unsteadiness, sometimes with large shed, then say oil has gone.
4 hand twist method
Twist the lubricant between the thumb and index finger repeatedly grinding, good hand feel lubricating oil, less wear debris, no friction, if they feel the sand between your fingers like a larger sense of friction, then the oil within impurities, can not be reused and should be replaced with new oil.Check the bearings and bearing races and found that there are cracks, fatigue spalling and loose roller bearings and other phenomena, replace bearings. If you find that there are bearing race pitting should also replace the bearings.
    Check LNSERTED journal bearing bore and cope with the situation, with the gap should be less than 0.10mm measurement journal, should be in the upper and lower parts of the vertical ground (where the largest wear parts) measurements. If used with the gap exceeds the specified limit, replace the bearings, so back to normal with the gap. Not allowed in the journal deburring, pitting to narrow the gap.
    After all parts are in line with the requirements, the inner bearing grease after the release of people.
The LNSERTED bearing grease chamber should pay attention, you should squeeze bearing grease until the grease from the bearing on the other side coming out so far. Intracranial axis in the cavity and apply a thin layer of grease to make it play a role in anti-rust. Note Do not apply grease cavity too much, otherwise it will affect the cooling and braking.