Patent 7517156 was granted and assigned to NTN Corporation on April, 2009 by the United States Patent and Trademark Office.
A cradle bearing comprises a circular arcuate outer race arranged in a circular arcuate recessed part provided in a housing, a plurality of rollers arranged along the inner circumferential surface of the outer race and supporting a swash plate swingably, and a retainer for retaining the interval between the rollers. An engagement member and the end face of the retainer in the circumferential direction are in face-to-face contact with each other.