Contact fatigue failure means the bearing surface by alternating stress failure. Contact fatigue spalling occurred in the bearing surface, often accompanied by fatigue crack, starting with the maximum alternating shear stress at the contact surfaces of the following, and then extended to the surface to form a different shape of spalling, such as point-like pitting or pitting peeling flaking into small pieces called shallow spalling. Due to the the flaking surface gradually expand, while often extended to the deep, forming deep peeling. The deep peel off contact fatigue failure fatigue source.
    Bearing card hurt phenomenon appears
    1, can be used to manually scrape or bearing carved face repair scratch padded turning, cylindrical and oval bush backlash adjustment.
    Cylindrical and oval bearing headspace can be used to manually scrape or circumstances allow adjustment of the bearing carved face padded.
    The more oil wedge fixed-bearing, in principle, allow scratch repair and adjust the bearing clearance, the gap should be replaced with new tile inappropriate.
    4 more oil wedge tilting bearing is not allowed to repair scratch pad, clearance inappropriate should be replaced because of the tile. Tile thickness adjustable by the block under the adjustment behind the watt plus stainless steel pad, or thinning of the thickness of the adjustment block adjustment Watts amount. Note that more oil wedge tilting bearing the tile of the same group, the thickness error should be less than 0.01mm.
    Bearing fracture failure mainly due to the defects overload two factors. When the applied load exceeds the material strength limit, causing parts breakage called overload fracture. Overload Host sudden failure or improper installation. Bearing parts of the micro-cracks, shrinkage, bubbles, bulk foreign debris, overheating organizations and local burn defects in shock overload or excessive vibration will cause the defect at the fracture, fracture called defective. It should be noted that, bearing retest of the raw materials into the plant, forging and heat treatment in the manufacturing process, quality control, process control can be correctly analyzed by the instrument above defect exists, control must be strengthened in the future. But, in general, usually bearing fracture failure failure most of overload.


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