Engineered specifically for high-speed, high-vibration 3D printing applications, the West3D x CNA MGN9H Linear Rails are the result of an exclusive engineering collaboration. Designed to outperform standard kit-grade hardware, these high-precision linear guides feature a custom heavier-than-standard preload for maximum rigidity and smooth motion during high-acceleration toolhead movement.
Constructed from premium stainless steel, these upgraded rails feature custom West3D branding, sleek black end caps, and built-in carriage grease ports for effortless long-term maintenance. Upgraded to Class H High Precision standards, they offer tight straightness tolerances (0.1mm over 1 meter) and uniform ball-groove tolerances (0.002mm) across the entire length.
Key Features
High-Speed 3D Printing Preload: Custom-specified tight preload reduces clearance between rail and carriage, eliminating play and vibration during high-speed printing.
Class H High Precision: Manufactured to stringent precision specs with tight straightness and groove tolerances for smooth, binding-free linear motion.
Stainless Steel Construction: High corrosion resistance and durability designed for enclosed, high-heat 3D printer environments.
Convenient Maintenance: Carriages come equipped with accessible grease ports for easy lubrication without full disassembly.
Custom Aesthetic: Features black carriage end caps and laser-etched West3D logo styling.
Technical Specifications & Length Options
Rail Model: MGN9H Linear Guide Rail with MGN9H Carriage Block
Precision Rating: Class H (High Precision)
Available Lengths: 150mm, 300mm, 350mm, 400mm
Material: Stainless Steel
Usage & Maintenance Notes
Pre-Lubrication Notice: Stainless rails shipping with clear grease are pre-lubricated with Mobilux EP2 (not temporary anti-rust shipping oil). Black rails ship coated in protective anti-oxidation oil and should be cleaned and properly lubricated prior to installation.
Voron & DIY Printer Sizing: For Voron V2.4 and similar coreXY builds, rail length requirement is typically 50mm larger than your bed size (e.g., 300mm bed uses 350mm rails). Always verify your build's Bill of Materials (BOM) for exact length and quantity needs.
