E17 (equivalent to EN17) is a magneto type ball bearing, also known as a separable angular contact ball bearing. It is mostly used in small high-speed equipment. The outer ring can be separated for easy assembly and adjustment. Model E17 EN17 L17 M17 B017 Brand ZH Material Chrome Steel precision P0 P6 P5 P4 Product Description - Magnetomotors, small generators, old-fashioned motorcycle ignition motors - Precision instruments, gyroscopes, small high-speed spindles - Small high