NJ5218 Single‑Row Cylindrical Roller Bearing 90*160*52.4mm Brass Cage For Industrial Gearbox Heavy‑Duty Transmission Machinery Product Overview NJ5218 is an open‑style single‑row cylindrical roller bearing fitted with sturdy brass cage and manufactured from premium GCr15 bearing‑steel. Its rib‑structured inner ring bears heavy radial loads and one‑direction axial force, separable rings bring convenient installation and maintenance, and multiple precision‑grade selections make