White Paper on bearing tolerance and precision levels including definitions and specifications of ABEC and RBEC precision levels . ABEC 7, Class 4, P4.
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P4). NSK supplies the following bearing series with P4Y tolerance: 7000; 7200. Super Precision Angular Contact bearings are specifically designed for rigid,
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Determination of Applied Loads and Bearing Analysis . . . . . . . . . . . . . . . 36 .. to ABEC 7 (ISO P4) and ABEC 9 (ISO P2) precision classes. They are available in
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