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        1. 推力軸承及其零件
           
            FYB—推力軸承是由一個推力保持架與滾針或圓柱滾子,或推力球加推力墊圈組成的軸承單元,并可組件單獨使用,結構緊湊多樣,能承受單向軸向力,具有高承載能力和高剛度。軸承廣泛用于汽車、機床、冶金機械、紡織機械、電動機、傳動軸、齒輪箱等定位和支承處。

          △結構形式
            軸承滾動體有推力球、推力圓柱滾子、滾針等多種形式。
            保持架有鋼的和有色金屬材質。
            保持架有車制和沖壓結構。

          △產品精度
            尺寸公差和幾何精度按GB/T307。
            配套圓柱滾子精度等級Ⅲ級(國標GB/T4661)。
            滾針直徑相互差在2μm,精度等級為G2級(國標GB309)。
            配套鋼球精度等級20級(國標GB/T308)。

          △材料

            滾動體材料為GCr15軸承鋼,淬硬HRC60—65。
            推力墊圈材料為GCr15軸承鋼,淬硬HRC61—65。
            沖壓零件材料為優質低碳鋼。
            保持架為低碳鋼或有色金屬。

          △特殊說明
            裝配容易但需充分考慮裝配中的軸向預載荷。

          △標準
            GB/T273.2—1998滾動軸承 推力軸承 外形尺寸 總方案(GB-12)
            GB/T301—1995滾動軸承 推力球軸承 外形尺寸(GB-10)
            GB/T307.4—2002滾動軸承 推力軸承 公差(GB-14)
            GB/T4663—1994滾動軸承 推力圓柱滾子軸承 外形尺寸(GB-9)
            JB/T7915—1995滾動軸承 推力滾針和保持架組件、推力墊圈(GB-2)
            JB/T8211—1996滾動軸承 推力圓柱滾子和保持架組件及推力墊圈(JB-7)
          Thrust Bearing and Its Components

          FYB---thrust bearing and its components is a unit composed of thrust cage and needle roller or cylindrical roller, or thrust ball with thrust washer. It can also consist work-pieces used separately. Featuring compact structures, capability of bearing single-direction axial force, high loading ability and high rigidity. It is widely used in lathe, metallurgical and textile machinery; motor, driving shaft, gearbox and other location & supporting location.

          Types of Designs:
          For bearing rolling body, various structures of thrust balls, needle rollers and cylindrical rollers are available.

          For cages, materials of steel and non-ferrous metal can be chosen.
          There are different structures of cages, such as machined & punched.

          Product Precision Accuracy:
          Dimensional tolerance and geometrical accuracy is based on GB/T307.
          Matched cylindrical roller precision grade is Ⅲ (ISO GB/T4661).
          Mutual difference of needle roller diameter is 2μm, and the precision grade is G2 (ISO GB309).
          Matched steel ball accuracy is grade 20 (ISO GB/T308).

          Materials:
          Material for rolling body is GCr15 bearing steel, quench-hardening HRC60---65.
          Material for thrust washer is GCr15 bearing steel, quench-hardening HRC61---65.
          Material for punched parts is quality low-carbon steel.
          Material for cages is low-carbon steel or non-ferrous metal.

          Special Directions:
          Easy to mount, but axial preloading during installation is to be fully considered.

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