This front hub inner outer bearing is a tapered roller bearing installed in the truck front wheel hub. It bears radial and axial composite loads, supports axle weight and enables smooth wheel rotation during heavy-duty transportation. Made of premium bearing steel and treated with precision heat treatment, it features high hardness, excellent wear resistance and fatigue resistance. It maintains stable performance under heavy loads and rough road conditions. Each bearing undergoes dimensional inspection and rotation performance testing before shipment. It fixes hub abnormal noise and overheating faults and serves as an essential replacement part for truck chassis overhaul.