E9 stands for Magneto type ball bearing. It is a separable single-row angular contact ball bearing, widely used in small, high-speed, and precision equipment, and is often classified as a special single-row angular contact ball bearing. Model E9 EN9 Brand ZH Material Chrome Steel precision P0 P6 P5 P4 Product Description 1. Magnetomotors, small generators, ignition motors (origin of names); 2. Precision instruments, gyroscopes, optical equipment spindles; 3. Small high-speed