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。
balls and roller 52100 chrome steel; outer housing 1018 to 1020 carbon steel; ball return housing plated zinc die casting; end caps acetal copolymer; working bore 0.2495 to 0.2500 in.; outside dia 0.4996 to 0.5000 in.; lg 0.7300 to 0.7700 in.; distance between retaining rings 0.4270 to 0.4470 in.; shaft dia 0.2485 to 0.2490 in.; normal fit housing bore 0.4995 to 0.5005 in.; press fit housing bore 0.4985 to 0.4995 in.; ball dia 0.0469 in.; 5 ball circuits; rolling load rating 60 special features