A compressor component incorporated into a compressor having a compressor body (200) and a compressor pulley mechanism (400) transmitting a driving force to the compressor body (200) has an austenite grain with a grain size number falling within a range exceeding 10, a fracture stress value of at least 2650 MPa, or a hydrogen content of at most 0.5 ppm. This provides a compressor component and a compressor bearing with a long fatigue life, a high anti-crack strength, and a reduced secular dimensional variation.