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。
0.8750 inches nominal outside diameter, unable to decode material, 1.2500 in. lg,0.8750 in. lg between retaining rings; 0.5000 in. bore special features, unable to decode material document and classification