一種圓柱形裝置,包含三個或更多個長方形球迴路,並配有一個保持器以引導球沿正確的路徑移動,專門設計用於滑動直線運動軸,以最大限度地減少摩擦和磨損。
unable to decode material, 0.3750 inches nominal distance between retaining rings, 0.3746 inches minimum and 0.3750 inches maximum outside diameter, 0.1872 inches minimum and 0.1875 inches maximum working bore diameter, 0.5470 inches minimum and 0.5620 inches maximum overall length