推力轴承及其零件
 
  FYB—推力轴承是由一个推力保持架与滚针或圆柱滚子,或推力球加推力垫圈组成的轴承单元,并可组件单独使用,结构紧凑多样,能承受单向轴向力,具有高承载能力和高刚度。轴承广泛用于汽车、机床、冶金机械、纺织机械、电动机、传动轴、齿轮箱等定位和支承处。

△结构形式
  轴承滚动体有推力球、推力圆柱滚子、滚针等多种形式。
  保持架有钢的和有色金属材质。
  保持架有车制和冲压结构。

△产品精度
  尺寸公差和几何精度按GB/T307。
  配套圆柱滚子精度等级Ⅲ级(国标GB/T4661)。
  滚针直径相互差在2μm,精度等级为G2级(国标GB309)。
  配套钢球精度等级20级(国标GB/T308)。

△材料

  滚动体材料为GCr15轴承钢,淬硬HRC60—65。
  推力垫圈材料为GCr15轴承钢,淬硬HRC61—65。
  冲压零件材料为优质低碳钢。
  保持架为低碳钢或有色金属。

△特殊说明
  装配容易但需充分考虑装配中的轴向预载荷。

△标准
  GB/T273.2—1998滚动轴承 推力轴承 外形尺寸 总方案(GB-12)
  GB/T301—1995滚动轴承 推力球轴承 外形尺寸(GB-10)
  GB/T307.4—2002滚动轴承 推力轴承 公差(GB-14)
  GB/T4663—1994滚动轴承 推力圆柱滚子轴承 外形尺寸(GB-9)
  JB/T7915—1995滚动轴承 推力滚针和保持架组件、推力垫圈(GB-2)
  JB/T8211—1996滚动轴承 推力圆柱滚子和保持架组件及推力垫圈(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.