Disconnected type free end bearing seat

The invention relates to a disconnected type free end bearing seat which comprises a fixed end cover, a fixed shell, a bearing, a shaft spacer sleeve, a floating shell, a sealing end cover and a locking nut. The fixed shell and the floating shell are fixedly connected, oil inlets are formed in the fixed shell and the floating shell, bearings are arranged in the fixed shell and the floating shell, a mandrel penetrates through the bearings in the fixed shell and the floating shell and is fixedly connected with inner rings of the two bearings, and a shaft spacer sleeve is arranged outside the mandrel between the two bearings; the end, located on the fixed shell, of the mandrel is sleeved with a fixed end cover, and the fixed end cover is tightly attached to one end of a bearing in the fixed shell and fixedly connected with the fixed shell. A locking nut is sleeved at one end of the core shaft, which is positioned at the floating shell, the locking nut is tightly attached to one end of the bearing in the floating