万向节滚针轴承

　　FYB—万向节滚针轴承是滚针与轴套及防尘罩，密封圈组成的轴承单元。结构紧凑，多样，仅可承受径向承载，其常用于广泛用于汽车传动轴和方向机。

△结构形式
　　轴承滚动体有采用尖头、平头、圆头等多种滚针形式。
　　轴承有带密封和不带密封结构。

△产品精度
　　尺寸公差和几何精度按JB/T3232。
　　滚针直径相互差在3μm，精度等级为G3级（国标GB309）。

△材料
　　滚动体材料为GCr15轴承钢，淬硬HRC60—65。
　　套圈材料为GCr15轴承钢，淬硬HRC61—65。
　　冲压零件材料为优质低碳钢。

△特殊说明
　　装配容易但需充分考虑使用场合。

△标准
　　JB/T3232—1994万向节滚针轴承（JB-5）

Universal-joint Needle Roller Bearing

FYB---universal-joint needle roller bearing is a unit composed of needle rollers and bushings, dust cover and seal ring. With multiple & compact structures, it can only bear radial load and usually be used in driving axle and steering mechanism.

Types of Designs:
For bearing rolling body, following types of needle rollers, such as pointed-head, flat-head and round-head ones, are used.
Bearings of the structure with or without seal are available.

Product Precision Accuracy:
Dimensional tolerance and geometrical accuracy is based on JB/T3232.
Mutual difference of needle roller diameter is 2μm, and the precision grade is G2 (ISO GB309).

Materials:
Material for rolling body is GCr15 bearing steel, quench-hardening HRC60---65.
Material for rings is GCr15 bearing steel, quench-hardening HRC61---65.
Material for punched parts is quality low-carbon steel.

Special Directions:
Easy to mount, but application place is to be fully considered.