Interne radiale speling
C1 interne speling (lager dan C2)
Precisie
P5 precisie (hoger dan P6)
Warmtestabilisatie
Geen warmtestabilisatie - temperaturen tot 120 °C
Suffix-omschrijving
P51Combination Of P5 (Dimensional And Running Accuracy To ISO Tolerance Class 5 (Better Than P6)) And C1 (Radial Clearance And Reduced Levels Of Vibration)
NARadial Clearance For Bearings With Non-Interchangeable Rings (Always After Radial Clearance Symbol e.g. NU215P63 NA)