White Paper on bearing tolerance and precision levels including definitions and specifications of ABEC and RBEC precision levels . ABEC 3, Class 6, P6.
The radial internal clearance applies to bearings with an inner ring before .. increased accuracy, the tolerances are restricted to values in the classes P6, P5,
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.
Angular contact ball bearings, four-point contact ball bearings. Tolerances: Normal, P6 · Internal clearance: table · Recommended fits · Shaft and housing
Regarding bearing accuracy classes, besides ISO normal accuracy, as . P6. P5. P4. P2. ⎯. ⎯. Ball. ABEC 1. ABEC 3. ABEC 5. ABEC 7. ABEC 9. A60. Bearings.