Flanged ball bearings: Series: F series Product Name: Flanged ball bearings, flange bearings Brand: NCKBRT Shield / closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ Tolerance: ABEC-1, ABEC-3, ABEC-5, ABEC-7 Vibration level: V4, V3, V2, V1 Radial play: C0, C2, C3, C4, C5 Material: Gcr15 Retainer: PTFE, nylon, PEEK or (stainless)steel Hardness: 59 - 63HRC Application: Robot, medical apparatus, office machine, inspection instrument, speed change device, Motor, Optical apparatus and instruments, card reader and so on. F series: F683, F693, F603, F684, F694, F624, F634, F685, F695, F605, F625, F635, F635, F687, F697, F697, F607, F627,F688, F689, F698, F699, F608, F609, F6801, F6901, F6001, F6802, FR8ZZ, FR4ZZ, FR6ZZ, FR10ZZ, F63800ZZ, F6803ZZ, F16002ZZ, F16004ZZ, F636ZZ, F6902ZZ, F6903ZZ, Non-F6800ZZ MF-series: MF104, MF85, MF95, MF105, MF115, MF106, MF126, MF117, MF128, MF148, MF104ZZ, MF85ZZ, MF95ZZ, MF105ZZ, MF115ZZ, MF106ZZ, MF126ZZ, MF117ZZ, MF128ZZ, MF148ZZ