密珠轴承的基本结构是由主轴轴颈、轴套以及径向和轴向密集于两者之间具有过盈配合的滚珠所组成。密珠轴承是滚动轴承的特例。密珠轴承的结构特点是密集和过盈。密集就是滚珠按螺旋线密集排列,即在轴承的每个径向 The basic structure of the ball bearing is composed of the spindle journals, bushings and balls with interference fit between them in radial and axial directions. Pearl ball bearings are a special case of rolling bearings. The structure of the ball bearing is characterized by dense and interference. Intensive is the ball by helix dense arrangement, that is, in each bearing radial