A Low Friction Thrust Bearing for Reciprocating Compressors

Shuhei Nagata
Hirokatsu Kousokabe
Nobuya Sekiyama
Toshiaki Ono


A thrust bearing with a micro texture on its sliding surface that produces hydrodynamic pressure was developed for use in reciprocating compressors. Evaluation using an elemental friction test showed that its friction loss was 20–60 % lower than that of the current design. Measurement of the efficiency of a compressor with the developed thrust bearing showed that the coefficient of performance was 1.4 % higher than that of a compressor with a conventional thrust bearing.