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四列圆柱滚子轴承
结构特点:
轴承径向尺寸小,有四列圆柱滚子,与相同尺寸的向心球轴承相比,径向承载能力大;轴承可用于高转速;轴承旋转精度高,适用于高的轧制精度;轴承属于可分离型,内圈具有互换性,适用于轧辊的更换要求。

结构类型:
    FC型      FCD型    FCDP型
 
应用领域:
     因轴承径向承载能力大,通常作为轧机的主轴承,因该轴承在工作中只能承受径向力,则轴向力另由止推轴承承担。该轴承可用于二辊开坯轧机、粗轧机、高速线材轧机、精密冷轧带钢轧机等。
   
尺寸范围:φ100φ1600

Four―row   roller  Bearings
Main features
        Bearings of this kind can only bear radial loads due to their large capacity for radial loads and rigidity. Smaller radial dimensions allow higher rolling speeds. High in rotating  accuracy ,it is suitable for highly accurate rolling operations. The interchangeable inner races facilitate roll change operations.
Construction
Type FC: One inner race, two outer races with lips and outer race assembly, and four E―shape cages.
Type FCD: Two inner races, two outer races with lips and outer race assembly, and four E―shape cages.
Type FCDP: Two inner races, two outer races with lips and outer race assembly, two side retainer rings, one middle retainer ring and four cages of window construction or through going shaft construction.

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