White Paper on bearing tolerance and precision levels including definitions and specifications of ABEC and RBEC precision levels . ABEC 7, Class 4, P4.
Determination of Applied Loads and Bearing Analysis . . . . . . . . . . . . . . . 36 .. to ABEC 7 (ISO P4) and ABEC 9 (ISO P2) precision classes. They are available in
WQK cylindrical roller bearing NNU4052 MP4 1.WQK roller bearing 2.roller bearing manufacturer 3.good quality fair price 4.OEM service. Cylindrical roller
ABEC precision levels, ABEC-1, ABEC-3, ABEC-5, ABEC-7, and ABEC-9 are the equivalent to ISO precision levels P0, P6, P5, P4, and P2 respectively.