Home > En > NSK - Bearing handbook > Formulation of bearing number
Basic numbers Auxiliary symbols
Accuracy class symbols
P5 ISO Class 5
P4 ISO Class 4
P2 ISO Class 2
ABMA tapered roller bearing
Omitted CLASS 4
PN2 ClASS 2
PN3 CLASS 3
PN0 CLASS 0
PN00 CLASS 00

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