1. Product Overview B45-106 is a non-standard open deep groove ball bearing with dimensions 45mm inner bore × 90mm outer diameter × 17mm width, specially developed for vehicle transmission and tractor gearbox differential assemblies. It adopts open structure without rubber seals and stamped steel cage with C0 standard clearance, capable of bearing radial load and two-way light axial load. The size is fully interchangeable with original matching bearing models, suitable for