Hydrodynamic bearing and 20-degree silking machine

The invention discloses a hydrodynamic bearing and a 20-degree laying head, the hydrodynamic bearing comprises a bearing seat, a bearing main body is mounted in the bearing seat, and the bearing main body is of a split structure; a rotor is arranged in the bearing main body; a lubricating system is arranged between the bearing seat and the bearing main body; the lubricating system is used for reducing abrasion of the rotor to the bearing body. According to the silking machine, a main load side bearing is changed into the sliding bearing, the bearing capacity of the coaxial-diameter sliding bearing is far larger than that of a rolling bearing, the service life and the stability of the coaxial-diameter sliding bearing are better than those of the rolling bearing, the production cost is reduced, the equipment stability is improved, the service life of the silking machine is greatly prolonged, and the stability of a rolled piece coil is guaranteed. 本发明公开一种液体动压轴承及20度吐丝机，包括轴承座，轴承座内安装有轴承主体，轴承主体为分体式结构；轴承主体内安装有转子，轴承座与