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。
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产品精度
尺寸公差和几何精度按GB/T307
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材料
内圈材料为GGr15轴承钢，淬硬HRC60-65
Inner Rings:
SLZ-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.
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Product Precision
Accuracy:
Dimensional tolerance and geometrical
accuracy is based on GB/T307
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Material
Material for inner rings is GCr15 bearing steel, quench-hardening
HRC60-65.
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