Two Pieces MGN9 400mm Linear Guide Rails With MGN9H Carriage Blocks And Plastic Mini MGN12 Guides For DIY 3D Printers And CNC Machines, Bearing Steel Construction, Precision Rails For Smooth Motion

Dual 400mm MGN9 Linear Rails with MGN9H Carriages
✔️ 2x rails, 2x carriages, 2x mini guides for DIY CNC kits

This 2-piece linear guide rail set delivers smooth, precise motion for DIY 3D printers and CNC machines. Built with bearing steel rails and MGN9H carriages, it ensures stable axis movement for accurate results in hobby projects and light industrial builds.

✅ 2x Linear Guide Rail (bearing steel)
✅ 2x Carriage Block (stainless steel)
✅ 2x Mini Linear Guide (plastic)
✅ Rail size 400x9x6.5 mm (15.7x0.4x0.3 in)
✅ Carriage size 40.5x20x8 mm (1.6x0.8x0.3 in)
✅ Mini guide size 50x9x6.5 mm (2x0.4x0.3 in)
✅ Limit blocks on both ends for collision protection
✅ Ideal for 3D printers and CNC machines

💡 What is a pillow block bearing used for in linear guide systems? Pillow blocks provide sturdy housing for bearings and align motion in linear guide setups.

- They support shafts and maintain alignment
- They shield bearings from dust and debris to prolong life
- Handy for DIY CNC and 3D printer axis projects
- They reduce vibration and improve rigidity in the motion system