... series, 64 series.2) Corresponding models range :605-6020 ,623-6220 ,6300-6320 ,6403-64133) Material: Gcr15 (Chrome steel) -China, (AISI ... KOYO IKO NACHI UBC TR KG HCHSeries 605-6020 ,623-6220 ,6300-6320 ,6403-6413ID size5 mm - 350 mmCage materialSteel , brass ... -28140611FAX0086-755-28142811 KOYO SKF NSK Deep Groove Ball Bearings 6220