The Nachi 5307ZZ is a double row angular contact ball bearing designed for demanding applications, featuring a 35 mm bore, 80 mm outer diameter, and 34.9 mm width for precise fitment in industrial machinery. This bearing offers a 20-degree contact angle, delivering high radial and axial load capacity with dynamic and static load ratings of 52,000 N and 37,000 N respectively, ensuring reliable performance under heavy loads. Double metal shields (ZZ) provide effective contamination protection, while the ABEC 1 precision grade guarantees smooth operation. Suitable for high-speed environments, it supports up to 6,300 rpm with grease lubrication, making it ideal for pumps, gearboxes, and other precision equipment requiring durability and long service life.