1. Product Overview B40-167A is a non-standard open deep groove ball bearing with dimension 40mm inner bore × 90mm outer diameter × 19mm width, matching vehicle and tractor gearbox differential assemblies. Open design without rubber seals, fitted with stamped steel cage and C0 standard internal clearance. It bears radial load and bidirectional light axial load, stable low-noise high-speed operation under frequent shifting vibration. Fully quenched GCr15 bearing steel with