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。
ground surface finish, 0.4995 inches minimum and 0.5000 inches maximum working bore diameter, unable to decode material, 1.2350 inches minimum and 1.2500 inches maximum overall length, 0.8746 inches minimum and 0.8750 inches maximum outside diameter