Heavy Duty 2 Pack 12mm SBR12LUU Sliding Bearing Blocks Open Long for Linear Guides and Shaft Rails CNC Rail Kit Built Tough High Precision Quiet Smooth Operation

Heavy Duty 12mm SBR12LUU Open Long Sliding Blocks 2 Pack
✔️ 2 pack, SBR12LUU long open blocks, 12mm rails (0.472 in), aluminum

These heavy duty blocks are designed to mount on 12 mm linear rails to provide smooth, quiet motion in CNC machines, 3D printers, and automated systems.

✅ 2 pcs SBR12LUU long open blocks
✅ Aluminum alloy body, internal bearing steel
✅ Rail diameter: 12 mm (0.472 in); mounting screws M5 x 10 mm
✅ Includes pressure plate for stable lock and smooth operation

💡 What is a sliding bearing block used for in linear guide systems? This handy component helps control motion on 12 mm rails.

- It helps guide the carriage along a 12 mm rail - It reduces friction with a built in ball bearing system - It pairs with 12 mm rails and SBR12LUU sliders - It's a handy upgrade for CNC, 3D printers, and automation projects ✝️