2 Pack 400mm MGN9 Linear Sliding Rail Guide With MGN9H Carriage Block And Mini Guide For CNC Machines, Engraving, And 3D Printers, Pro Level Precision Linear Motion System For Smooth, Reliable Motion

2-Pack 400mm MGN9 Linear Rail with MGN9H Carriage Kit
✔️ 400x9x6.5 mm rail, 39.9x20x8 mm carriage, M3x3 & M3x8 threads

These precision linear guide rails provide smooth, accurate motion for CNC machines, engraving setups, laser cutters, and 3D printers, keeping alignment during long runs.

✅ Material: bearing steel for wear resistance, load-bearing capacity, and stability
✅ Color: Black
✅ Rail size: 400 x 9 x 6.5 mm (L x W x H) / 15.75 x 0.35 x 0.26 in
✅ Carriage block size: 39.9 x 20 x 8 mm / 1.57 x 0.79 x 0.31 in
✅ Thread sizes: Block M3x3; Rail M3x8
✅ Combined height: 10 mm / 0.39 in
✅ Package contents: 2 rails, 2 carriages, 2 fake rails, 1 hex wrench
✅ Built-in steel balls reduce friction for smooth, high-speed motion
✅ Rust-preventive oil coating; lubricate before use

💡 What is a precision linear guide rail set with an MGN9H carriage used for in CNC and 3D printing projects?

It's handy for controlling precise, repeatable motion in compact motion systems.

- Handy for accurate, repeatable linear motion in CNC machines and 3D printers
- Low friction with built-in steel balls ensures smooth, quiet operation
- Uses standard M3 mounting and 400 mm rails for easy upgrades in hobby and pro setups
- Suitable for 3D printers, laser cutters, robotic arms, and precision inspection equipment
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