Trunnion assembly

In a trunnion assembly which includes a housing, bearing means in said housing held from axial movement relative thereto, a one-piece shaft journaled in said bearing means, means rigidly secured to one end of said shaft for applying rotative and axial forces to said shaft, first thrust resisting means for resisting axial movement of the shaft relative to the housing in one direction:

• the improvement which comprises a second thrust resisting means including a multi-segmented thrust ring having an inner peripheral portion and an outer peripheral portion, means defining an annular groove in said shaft for seating the inner peripheral portion of said multi-segmented ring with the outer portion slidably engaging one of said bearing means for resisting axial movement of the shaft relative to the housing in the other direction, and a retaining ring encompassing said multi-segmented thrust ring for maintaining the inner portion of said multi-segmented ring within said groove;
• first seal means near one end of said housing defining a lubricant seal between said shaft and said one end of said housing;
• second seal means near the other end of said housing for defining a lubricant seal between said shaft and said other end of said housing;
• said second seal means including an annular lip on said other end of said housing, a seal retainer secured in fluid tight engagement to said shaft and having an annular lip directed inwardly toward said housing lip, and a seal ring including a pair of resilient annuluses disposed within and establishing sealing engagement with said lips;
• means for directing a lubricant between said housing and said shaft;
• said housing lip encompassing said retaining ring and one of said resilient annuluses engaging and maintaining the retaining ring in locked position surrounding the multi-segmented thrust ring.