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    High Quality CERAMIC bearings

    Replace stock bearings by these highest quality CERAMIC bearings with much higher tolerance and smoothness and feel a much difference in response.


    • Bearings 692ZZ Ceramic (2x6x3mm)

      Quantity: 2 pieces

    Ceramic Materials, which can be used in making bearings,  includes mainly Silicon Nitride(Si3N4),  Zirconia(ZrO2), 
    Alumina(Al2O3) and so on. They 
    are noted for their characters high strength in high rigidity,good wearability; high temperature, corrosion resistance;  high resistance,  non-magnetic,  electrical insulation,  these characters quality
    them for replacing steel to make bearings  to meet the requirements in a severe condition,  where a steel bearing
    cannot withstand.


    Hybrid ceramic bearing features bearing rings made of bearing steel(Gcr15) or stainless steel(9cr18).  The ceramic
    balls is mainly made of Silicon Nitride,  Zirconia or  Alumina,  among which Silicon Nitride is  of excellent overall performance and has become the preferred material for ceramic ball bearing.


    The density of Silicon Nitride is 3.20g/cm3, much lower than  that of bearing steel(7.85g/cm3).  For this reason, the
    ceramic rolling element  can effectively restrain  the centrifugal force  generated  by the high-speed rotation  and
    reduce the load of rolling element.


    Meanwhile, it can reduce the rotational slide between the rolling element and the raceway surface, and thus pre-
    vent surface damage.  Therefore, ceramic ball bearing is the best choice for high-speed rotation application, such
    as high-speed motor spindle bearing, machine spindle bearing, dental drill bearing,  instrument bearing and hard
    drive bearing, high-speed wheelhead bearing.  It can also be used in the civilian products like roller skates, aero-
    modellings and electric toys. 



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