4 Pack SBR12UU Linear Ball Bearing Blocks For SBR Linear Rail Guide Aluminum CNC Parts 12mm Bore High Precision Sliding Blocks For DIY Machining And CNC Projects

Four-Pack SBR12UU Linear Bearing Blocks for CNC Rails
✔️ 12mm bore, 4-pack SBR12UU blocks for aluminum rails

These SBR12UU bearing blocks are precision sliding components designed to ride on aluminum SBR rails for smooth linear motion. They are commonly used in DIY CNC machines, 3D printers, and automation projects that require accurate, low-friction guide systems.

✅ 4 pieces included: SBR12UU bearing blocks for 12mm shafts
✅ Material: bearing steel for durability and rigidity
✅ Bore and shaft diameter: 12mm
✅ Ideal for CNC linear guide setups and DIY machining projects

💡 What is a pillow block bearing used for in CNC linear motion systems? This handy component supports shafts and keeps them aligned with rails. - Supports shafts and maintains alignment with guide rails
- Reduces friction for smoother, longer-lasting motion
- Handy for DIY CNC builds using 12mm SBR blocks and aluminum rails
- Helps simplify assembly and alignment in small machines