White Paper on bearing tolerance and precision levels including definitions and specifications of ABEC and RBEC precision levels . ABEC 5, Class 5, P5.
Regarding bearing accuracy classes, besides ISO normal accuracy, as the . P5. P4. P2. ⎯. ⎯. Ball. ABEC 1. ABEC 3. ABEC 5. ABEC 7. ABEC 9. A60. Bearings.
Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ NH-type cylindrical roller bearings consist of the NJ-type cylindrical roller bearings
o Ultra high speed double row cylindrical roller bearings. NN30HSRT6 type ④ Accuracy of tapered bore. Precision class P5：JIS class 5 P2：JIS class 2.
universal type bearings, DB, DF and DT combinations as well as multi-combinations can Accuracy symbol. P5 : class 5 NN3032K. NNU4934K. NN3034K.