1. Product Overview B23-9 non-standard single-row open deep groove ball bearing, dimension 23mm inner × 35mm outer × 9mm ultra-narrow width. Fully interchangeable with original NSK B23-9, matched for Asian passenger car CVT hydraulic valve tiny micro shafts. Open design without rubber seals, stamped low-carbon steel cage, standard C0 clearance, C3 clearance customizable. It bears light radial load and slight two-way axial load, runs quiet and stable under long-term ultra-high