{"title":"12mm Diameter Linear Bearing Pillow Block [SBR12UU]","handle":"12mm-diameter-linear-bearing-pillow-block-sbr12uu","url":"/products/12mm-diameter-linear-bearing-pillow-block-sbr12uu","description":"An SBR12UU sliding linear ball-bearing pillow block for use with 12 mm supported rail systems. The platform slides smoothly along the rail on internal ball bearings, providing low-friction linear motion for CNC machines, 3D printers, and robotics projects.\n\nThe slider measures 39 × 36 mm and has four holes tapped for M5 machine screws, making it easy to mount a platform, tool holder, or other hardware. The pillow block won't come off the rail by itself but can rotate slightly, so using two parallel rails is recommended for stable, rigid motion.\n\nKey Features\n\n\nSBR12UU Type – Designed for 12 mm diameter supported linear rails\n\nBall Bearing Interior – Smooth, low-friction linear travel\n\nM5 Mounting Holes – Four tapped holes for secure platform attachment\n\nCompact Platform – 39 × 36 mm slider body\n\n\nSpecifications\n\n\nType – SBR12UU pillow block\n\nRail Diameter – 12 mm\n\nPlatform Size – 39 × 36 mm\n\nMounting – 4× M5 tapped holes\n\n\nIdeal For\n\nCNC routers and laser cutters\n3D printer motion systems\nRobotics linear actuators\nAny project requiring smooth linear motion on a supported rail\n\n\nPackage Contents\n\n1× SBR12UU Linear Bearing Pillow Block\n\n\n\nNote: 12 mm supported rail sold separately. For stable motion, use two parallel rails with pillow blocks on each.\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":9009,"title":"Default Title","sku":"AF-1183","price":16.09,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}