Abstract: A bearing and support structure for a speed racing roller skate including a support plate, a truck projecting downwardly from the center of the support plate, an axle projecting laterally and horizontally from the truck and extending into a cylindrical bearing sleeve. The cylindrical bearing sleeve is provided with an internal annular bearing spacer flange intermediate its ends, and a first ball bearing assembly is disposed around the axle within the sleeve and adjacent the annular spacer flange. A second ball bearing assembly is disposed inside the sleeve adjacent the spacer flange arouund the axle and on theopposite side of the spacer flange from the first bearing assembly. A nut is threaded on the end of the axle to retain the bearings and sleeve in concentric position around the axle, and at a particular axial position thereon. A wooden wheel concentrically surrounds, and is bonded to, the cylindrical sleeve.