滚动轴承
Rolling bearing
滚动轴承按其所能承受的载荷方向或公称接触角的不同分为向心轴承和推力轴承。其中径向接触轴承为公称接触角为0的向心轴承，向心角接触轴承为公称接触角大于0到45的向心轴承。轴向接触轴承为公称接触角为90的推力轴承，推力角接触轴承为公称接触角大于45但小于90的推力轴承。
Rolling bearings can be divided into centripetal bearings and thrust bearings according to their load directions or nominal contact angles. The radial contact bearing is a centripetal bearing with a nominal contact angle of 0, and the centripetal angular contact bearing is a centripetal bearing with a nominal contact angle greater than 0 to 45. The axial contact bearing is a thrust bearing with a nominal contact angle of 90, and the thrust angle contact bearing is a thrust bearing with a nominal contact angle greater than 45 but less than 90.
按滚动体的形状可分为球轴承和滚子轴承。滚子轴承按滚子种类分为：圆柱滚子轴承、滚针轴承、圆锥滚子轴承和调心滚子轴承。
According to the shape of rolling body, it can be divided into ball bearings and roller bearings. According to the types of roller roller bearings: cylindrical roller bearings, needle roller bearings, tapered roller bearings and spherical roller bearing.
按其工作时能否调心分为调心轴承----滚道是球面形的,能适应两滚道轴心线间的角偏差及角运动的轴承和非调心轴承(刚性轴承)----能阻抗滚道间轴心线角偏移的轴承。
According to its work, it can be divided into aligning bearings - the raceway is spherical, the angular deviation between the two raceway axis and the angular motion of the bearing and the non - adjustment bearing (rigid bearing) - the bearing that can impedance the axis angle deviation between the raceway.
按滚动体的列数分为单列轴承、双列轴承和多列轴承。
According to the number of rollers, it can be divided into single row bearings, double row bearings and multi row bearings.
按其部件（套圈）能否分离分为可分离轴承和不可分离轴承。
According to whether its components can be separated, it can be divided into separable bearings and non separable bearings.
按其结构形状(如有无装填槽,有无内、外圈以及套圈的形状,挡边的结构,甚至有无保持架等)还可以分为多种结构类型。
According to its structure and shape (if there are no filling grooves, the shape of inner, outer ring and ring, the structure of the block, even without the cage) can be divided into many kinds of structure types.