The utility model discloses a novel truck hub bearing, which belongs to the technical field of an automobile hub bearing. Inner rings and outer rings are of a two-body structure. External diameters and internal diameters of two outer rings are designed to be a groove. Interference connection is formed between a nylon locking ring and the two outer rings. The two inner rings are fixedly connected by a spring collar. A component consisting of a rolling body, the inner rings and a holder is combined with the two outer rings. Two sides are respectively provided with a first sealing ring and a second sealing ring. A dustproof cover is arranged outside the second sealing ring. The novel truck hub bearing has the beneficial effects: the outer rings adopt the two-body structure, so that the outer rings can be grinded and processed by common equipment, a grinding wheel spindle is not too long, and grinding difficulty is relatively reduced. Meanwhile, when openings of the sealing rings at the two sides are grinded, difficulty is reduced much. When the novel truck hub bearing is used, adaptability of the two-body structure of the outer rings to influence of countershaft deflection is stronger.