To steeply reduce the manufacturing cost of a front axle for a bus.

A front axle 10 is formed of a center axle part 12, an end axle part 14 for supporting a front wheel to a vehicle width outer end, and a longitudinal axle 16 extended almost vertically while integrally connecting each vehicle width direction end part of the center axle part 13 to the inner end of the end axle part 14. A first spring fitting seat 20 for mounting a first air spring device for a standard bus is provided near the outer end, adjacent to the longitudinal axle part 16, of the center axle part 13, and a second spring fitting seat 24 for mounting a second air spring device for a low floor is provided near the inner end, adjacent to the longitudinal axle part 16, of the end axle part 14.