The NACHI NJ304EG cylindrical roller bearing features a 20 mm inner diameter, 52 mm outer diameter, and 15 mm width, designed for high load capacity with a dynamic load rating of 31,500 N and static load rating of 26,900 N. It includes a single row of cylindrical rollers with a nylon (polyamide) cage for reduced friction and durability. This bearing supports axial loads in one direction and is separable for easy mounting and maintenance. Its compact dimensions and robust construction make it suitable for various industrial applications requiring precise radial and axial load handling. Weight is approximately 0.16 to 0.18 kg.