Angular contact ball bearing 7224 C P4A GA (in addition, DB, DT, TBT, QBC and other matching methods); The angles include C angle, ACD angle, A5 angle, E angle, etc. It is mainly used in CNC machine tool spindles, high-speed motors and high-speed electric spindles. The operating speed reaches 5000 to 5500 rpm. Imported materials, imported G5 grade steel balls, and Kluberspeed NBU15 grease are used, which have the advantages of high rigidity, high precision, high speed, etc.