1.Product Overview HTFB31-28 non-standard open single row deep groove ball bearing, dimension 31mm bore × 80mm outer diameter × 16.5mm width, standard model of HTFB dedicated transmission series, compatible with Honda automatic gearbox intermediate and differential shafts, corresponding OE numbers 91003-RFK-025 / 91003-RXH-005. Open design without rubber seals, matched stamped low carbon steel cage and C0 standard internal clearance. It bears radial load and minor bidirection