Abstract: To provide an axle bearing having a low torque property and superior bearing lifetime. A hub bearing 6 is configured to rotatably support a wheel of a vehicle, and has a grease composition 10 sealed in an inner space thereof. The grease composition 10 contains a base oil and a thickener. The shear stress of the grease composition at the shear rate of 1,000-10,000 s?1 at 25° C. is 3,000 Pa or less. The viscosity of the grease composition is 1 Pas or less. The yield stress of the grease composition at 25° C. measured by a dynamic viscoelasticity analysis method using a rheometer is 1,300-3,000 Pa.

Abstract: A press working system, wherein a die can be replaced in a short time. A press working system (1) is provided with a press body having press machines (P1-P4) for producing an industrial product by pressing a plate-like member, and also with a moving bolster (MB) for moving dies (M) which are respectively provided inside the press machines (P1-P4) and stowing the dies (M) into die stowage chambers (13). The die stowage chambers (13) are arranged as a pair on both the left and right sides of a line extending in the longitudinal direction of the press body.