Spiral grooved spherical bearing

摘要

This invention relates to an improvement in a spiral grooved bearing for a shaft adapted to travel in the direction of rotation, composed of a stationary bearing part with a hemispherically cup-shaped first sliding surface and a bearing part of the shaft having a spherical second sliding surface with spiral grooves in said second surface adapted to feed a lubricant between said sliding surfaces, the improvement comprising an additional bearing part centered at the hemispherically- shaped bearing part, said additional part having a sliding surface which encloses said second sliding surface up to the vicinity of said shaft, and sleeve means adapted to receive said stationary bearing part and said additional part.