KB3D High Temperature Linear Rail - MGN12H - Multiple Lengths

Sold as 1 pair (Rail + Carriage) Each

This all-metal stainless steel MGN12H linear rail / guide with carriage set from KB3D is designed for use in high performance / high temperature applications. It carries a Z1 preload for proper constraint and is offered in multiple lengths. 

Features:

All-Metal bearing recirculation caps allow for operating temperatures above 70C

Stainless Steel construction for better handling of thermal expansion and easier maintenance.

Z1 Preload to handle any load while still delivering the constraint needed for precise extrusion.

Built-in lubrication ports for trouble-free maintenance

Lengths Offered:

300mm

350mm

400mm

450mm

500mm

Rails can be cut to any length using an abrasive cutting method. Consider graduated shallow cuts to keep heat down and avoid warp potential. Some folks prefer to mount the rail to spare extrusion which can also help with warp mitigation. 

What is a Z1 preload?

Z1 commands a higher preload between the rail and carriage than a more typical Z0 preload. Preload occurs after all space between two components (in this case the rail and carriage) is closed. Any further interference becomes preload, as these materials are too hard to physically compress. 

Having a higher preload is a benefit for our use case, but does change the way that rails feel when move by hand.

What to expect:

These rails are shipped (lightly) covered in shipping oil to mitigate corrosion during storage and transport. It is recommended to wipe this oil away and inject Mobilux EP2 (or similar) grease into the greasing ports.

Z1 preloaded rails will not slide as freely by hand when compared to a Z0 rail. Any imperfections in the machining process become twice as apparent when higher preloads are involved with an absence of real load. Want to feel your Z1 rail's true characteristics? Lay the rail on a clean, flat, and hard surface - then push down on the face of the carriage with moderate force while moving the carriage around. This better simulates real-world behavior.

Aside from linear rails in the highest price tiers, all linear guide rail carriages will benefit from a proper cleaning before being put into service. See here for a great walk through on this process.

Our rails have a built-in lubrication port, so simply displacing the shipping oil with your grease of choice often does just as well!