Abstract: An axle assembly for an in-line skate for retaining a wheel and a pair of bearings in a chassis of the in-line skate. The axle assembly has an elongated spacer hub, for supporting a bearing at each end portion thereof; an elongated male coupler, for bearing on a first side wall of the in-line skate chassis; and an elongated female coupler, for bearing on an opposing second side wall of the in-line skate chassis. The male and female couplers are insertable inwardly through axle bores of the chassis then through opposite ends of the spacer hub to obtain an assembled condition in which the wheel and pair of bearings are retained in the chassis. The male and female couplers are provided with means for interlocking with each other when in the assembled condition, to prevent outwardly movement of the couplers.