... : ABEC-1 (P0), ABEC-3 (P6),ABEC-5(P5)4) Noise Level: EMQ V1 Z2, EMQ V2 Z3, EMQ ... into five classes:Classes 0,Classes 6,Classes 5,Classes 4,Class 2.AII of them are equivalent to ISO ... 80 80 1200 -8 0 -7 0 -5 0 -4 0 -2.5 0 -9 0 -8 0 -6 ... 5 15 9 6 4 2.5 20 10 7 5 2.5 25 13 8 5 4 35 18 10 6 ... 38 4 1.5 8 4 1.5 8 4 1.5 8 4 1.5 9 ... 5 1.5 8 5 2.5 10 5 4 11 6 5Same as the matched inner ring5 2. ...