<p>A method of assembling a wheel rotatable about a main axis and having a plurality of peripheral rollers mounted on peripheral axles aligned tangentially about said wheel and radially spaced from said main axis, each said peripheral axle joined to adjacent other peripheral axles to form a continuous ring comprising said peripheral axles, said method including the steps of: molding each peripheral axle in a die having a cylindrical cavity tor forming the axle shaft of said peripheral axle without longitudinal separation tines, Said peripheral axles each having a receiving head portion for receiving a free end of said axle shall of an adjacent peripheral axle; mounting a roller on each said axle shaft; joining said peripheral axles together to form a continuous ring of peripheral axles; and molding a wheel body including a support structure around said continuous ring.</p>
