Double row cylindrical roller bearings with tapered bore are often mounted to the main shaft as a fix end 130, 180, 50, NNU4926, NNU4926K, 3.85, P5 P4.
P4). NSK supplies the following bearing series with P4Y tolerance: 7000; 7200. Super Precision Angular Contact bearings are specifically designed for rigid,
WQK cylindrical roller bearing NNU4052 MP4 1.WQK roller bearing 2.roller bearing manufacturer 3.good quality fair price 4.OEM service. Cylindrical roller
White Paper on bearing tolerance and precision levels including definitions and specifications of ABEC and RBEC precision levels . ABEC 7, Class 4, P4.
o Ultra high speed double row cylindrical roller bearings. NN30HSRT6 type P4：JIS class 4 UP：Special high precision NNU4926 NNU4926K NN4926.
Original SKF FAG NTN INA 51100 Thrust ball bearing, 10*24*9 NTN 51100,INA 51100,SKF 51100,51100 Precision Rating: P4,P5,P6 . bearing INA NA6908 bearing KOYO NNU4926K bearing INA K35X42X16 bearing FAG NU2207E.