... 3)prompt delivery and good servi thrust ball bearing specifications: 1) Shield / closure: open bearing, Z, ZZ, RS, 2RS 2) Snap ring ... , AISI304, AISI316, ceramic 7) Retainer: PTFE, nylon, PEEK or stainless steel 8) Bore size: 1 - 20mm 9) Model: 672-6709, 682 ... , MR52-MR149, R, FR, MR, MFR Free sample is available. Steel works bearing