To provide a press hub for a sirocco fan capable of planning cost reduction by reducing part counts, working costs and raw material costs.

D-shaped bore for whirl-stop 10a is formed at an end of the boss 10B in a press hub for sirocco fan which is integrally molded by press working a metallic plate having a disc-like flange 10A and a cylinder-like boss 10B integrally extruding perpendicular to flange face from a center of the flange 10A. The D-shaped bore for whirl-stop 10a is formed at the end of the boss 10B so that this invention eliminates the need for a part of whirl-stop as a separate part and machining and reduces the part counts and the working man-hour to plan cost reduction. Since the press hub 10 is integrally molded by press working the metallic plate and this also makes the cost of the press hub be reduced.