Shaft gear for transmission

The utility model discloses a shaft gear for transmission, which relates to the technical field of shaft gears and comprises a first shaft body, a second shaft body is arranged on one side of the first shaft body, a ring body is mounted between the first shaft body and the second shaft body, tooth blocks are arranged on the surface of the ring body, and the first shaft body and the second shaft body are connected by the ring body through a mounting structure. The surfaces of the second shaft body and the first shaft body are provided with first heat-resisting layers, lubricating structures are arranged in the second shaft body and the ring body, and the surfaces of the ring body and the tooth blocks are coated with second heat-resisting layers. By arranging the blocking body, the filling port, the flowing pipe, the storage cavity, the branch cavities and the main flowing cavity, lubricating oil is filled through the filling port, a small amount of lubricating oil is stored through the storage cavity, flows in