标准内圈

FYB内圈作为滚动轴承的滚道使用。
截面高度小，具有节省空间的结构。
引导倒角容易装入滚针轴承和装配时对密封唇的保护。

△     产品精度
尺寸公差和几何精度按GB/T307

△     材料
内圈材料为GGr15轴承钢，淬硬HRC60-65

Inner Rings:

FYB Inner Ring is Used as basic parts of Needle Roller Bearing.
The high degree is low with save the space.
The boot corner is used as a safeguard to hermetic seal and make cased inner ring easy.

△     Product Precision Accuracy:
Dimensional tolerance and geometrical accuracy is based on GB/T307

△     Material
Material for inner rings is GCr15 bearing steel, quench-hardening HRC60-65.