... 2000 Factory 2. ABEC1, ABEC3, ABEC5 3. Z3,Z4 Deep Groove Ball Bearing:1.Chrome steel material Gcr152.Open, ZZ ... R2-R24, R156, R166, R168, R188 Other non standard deep groove ball bearings, with inner size over 10mmSealZZ, Z, 2RS ... Oven, Range hood, Sewing machine, Massage Chairs, Textile machinery, Electric tools, Agriculture machinery, Fitness equipment, Washing Machine, Vacuum Cleaner, Office ...