초록

A composite roller for use in a variable pipe diffuser having inner and outer rings. The composite roller bearing rotatably mountable to a shaft comprising a cylindrical metal body having an external surface, an internal bore, and a pair of thrust washers having an internal bore mounted to each end.

대표청구항 ▼

[ What is claimed is:] [1.] A centrifugal compressor having a composite roller bearing and an annular radially disposed split ring diffuser, the diffuser including an inner and an outer ring, said inner ring being composed of a hardened material and having an inner groove disposed in the outer diame

[ What is claimed is:] [1.] A centrifugal compressor having a composite roller bearing and an annular radially disposed split ring diffuser, the diffuser including an inner and an outer ring, said inner ring being composed of a hardened material and having an inner groove disposed in the outer diameter and adapted to receive the composite roller bearing, and said outer ring being composed of a non-hardened material and having an outer groove in the inner diameter, said outer groove being adapted to receive the composite roller bearing, the composite roller bearing comprising:a cylindrical metal body being composed of a hardened material and having an external surface, an internal bore, a first end and a second end; anda pair of cylindrical thrust washers mounted concentrically to the first and second ends, respectively so as to be in sliding contact with said inner and outer rings at their respective grooves.