White Paper on bearing tolerance and precision levels including definitions and specifications of ABEC and RBEC precision levels . ABEC 7, Class 4, P4.

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.

P4). NSK supplies the following bearing series with P4Y tolerance: 7000; 7200. Super Precision Angular Contact bearings are specifically designed for rigid,

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