Diesel mechanical bearings in the event of problems, we must find a good reason and correct solution to avoid the recurrence of similar situations.
    Self-lubricating bearings manufacturer concluded the following seven reasons:

    1. Lack of oil. The reasons include: the oil is not added after the new oil; crankcase plug due to vibration loss of light leakage of oil; filter clogging, back to the valve spring failure, there is a blister on the cylinder oil or process hole clogged off, bearing serious wear and tear, the bearing on Of the oil hole is not aligned with the seat on the oil supply hole or on the lower tile installed wrong, fuel injection plunger wear oil leakage, injector atomization and diesel fuel leakage into the crankcase and other reasons, the lubricating oil thinning until Missing oil and "burning" injuries and so on.
    2. The oil is not clean. Reasons include: oil contains large amounts of metal debris, dust or mechanical impurities.
    3. Lubricant grades do not meet the instructions.
    4. Improper use of maintenance. Reasons include: Overload caused by crushing alloy bearing crushing, indentation in the bearing raceway, and even the inner and outer ring rupture; cone bearing axial clearance is too large, the wheels rolling on the bumpy road when the collision, the rolling body pressure to the bearing outside Circle and broken; not every work 10 ~ 12h filling a calcium-based grease.
    Bearing manufacturing defects. Reasons include: retainer deformation, the relative position of the inner ring and outer ring straight deflection, rolling body stuck and so on.
    6 poorly preserved. Reasons include: poor rust or over the period of the oil seal without re-oiled; or rust erase with sandpaper to reduce the accuracy of bump or injury and so on.
    7. improper installation. Reasons include: knocking the ring by a hand hammer to cause cracks; knocking a bearing with a punch causes the bearing to collapse; the seat ring is ruptured by the shock wave affecting the other ring and the hard knocking makes the retainer deform; the two bearing centerlines Bit straight error is too large, so that the needle roller, roller and the inner and outer ring by a lot of pressure, resulting in premature bearing fatigue damage; bearing preload or strong equipment caused by damage to the inner ring; A much smaller hole, resulting in deformation or rupture of the outer ring, the bearing rotation jamming; bearing inner ring hole and journal or bearing outer ring and hole with too loose, resulting in shaft deflection, gear meshing damage bearing damage; assembly The error of the gauge chain causes the preload pressure on the bearing to be too large. The crankshaft journal taper is out of tolerance, the bearing bush is out of round, the incorrect pressure sticking and the connecting rod centerline are out of alignment and the like so that the bearing bush is damaged. One end of the gap over the ambassador bearing partial wear, resulting in increased wear and tear at high temperatures.