1. Product Overview B40-206 non-standard single-row open deep groove ball bearing, dimension 40mm inner bore × 78mm outer diameter × 14mm width, fully interchangeable with original NSK B40-206, matching Nissan JF011E, RE0F10A CVT secondary driven pulley core assembly. Open design without rubber seals, equipped with stamped low-carbon steel cage and C0 standard internal clearance. It bears radial load and slight bidirectional axial load, runs stable and low-noise under long