1. Product Overview B30-222 non-standard single-row open deep groove ball bearing, overall dimension 30mm inner bore × 82mm outer diameter × 22mm extra wide width, fully interchangeable with original NSK B30-222, specially matched for domestic car CVT primary drive pulley heavy torque system. Open design without rubber seals, equipped with stamped low-carbon steel cage and factory standard C0 internal clearance, C3 clearance customizable on demand. It bears heavy radial load