Center bearing socket construction

A bearing socket for a pin connection of a truck to the body of rail vehicles, comprising an approximately cup-shaped lower part having a bottom wall with a central bore for the pin and a side wall diverging upwardly, an upwardly-opening cup-shaped insert of resilient material disposed within the lower part and having an annular side wall and a bottom wall which are of substantially the same thickness throughout and have outer bottom and side wall surfaces conformable to the inner bottom and side wall surfaces of said lower part, and an upwardly opening cup-shaped upper part having outer bottom and side wall surfaces conforming to the inner bottom and side wall surfaces of said insert, said insert being fixed by frictional adhesion between said upper and lower parts caused by the load of the said vehicle body so that said insert separates said surfaces of said upper and lower parts, respectively, and absorbs the rotary motion of the bearing by elastic deformation, a sleeve connecting and extending from the truck, an annular spacer positioned in said sleeve with a central opening of a diameter to receive said pin, said pin having a slot therethrough at a position below said spacer, and a wedge member engaged in said slot of said pin and bearing against said spacer for retaining said pin within said spacer.