日本NTN的5E-2RNU10101C3(721KG)轴承，属圆柱滚子轴承。其外圈两侧有挡边，内圈无挡边，允许轴相对轴承座有轴向位移，适合作为游动端轴承。它能承受较大径向负荷，具备高精度、高可靠性、低摩擦等特性，常用于工业机械等领域，保障设备稳定运转 。 The 5E-2RNU10101C3(721KG) bearing by Japan's NTN belongs to the cylindrical roller bearing type. Its outer ring has ribs on both sides, while the inner ring has no ribs, allowing the shaft to axially displace relative to the bearing housing, making it suitable as a floating-end bearing. It can withstand large radial loads and features high precision, high reliability, and low friction. It is often used in industrial machinery and other fields to ensure the stable operation of equipment.