The NACHI 5204ZZ is a double row angular contact ball bearing featuring a 20 mm inner diameter, 47 mm outer diameter, and 20.6 mm width. It is double shielded with metal shields on both sides, providing protection against contaminants while maintaining smooth operation. This bearing supports dynamic loads up to 20,000 N and static loads around 12,700 N, making it suitable for high-performance applications. The design includes a 20-degree contact angle for efficient axial and radial load handling. Its ABEC 1 (ISO P0) precision rating ensures reliable, low-friction rotation in compact dimensions ideal for motors and power transmission systems.