NJ208 - ECJ single - row cylindrical roller bearing, 40mm bore, 80mm OD, 18mm width. With optimized internal design (EC), more or larger rollers are installed, and the contact between the roller end face and the rib is improved, equipped with a steel cage (J). Made of high - carbon chromium bearing steel, with double - flanged outer ring and single - flanged inner ring, it can withstand radial and single - direction axial loads, with a maximum speed of 11000r/min (oil lubrication), suitable for shaft diameter φ40k6.