How often do you lubricate the linear guides? (lemmy.ml)

submitted 1 month ago by [email protected] to c/[email protected]

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I am curious how often do you service the linear rails on the 3D-printer:

How often do you lubricate them (MGN9 or MGN12)?
How do you lubricate them?
What volume of lube do you use?

Explanation of how often you should do it (HIWIN Lubricating instructions for linear guideways and ballscrews)

Most 3D-printer use MGN12. Reading the HIWIN documentation they shall be lubricated every 20-50km (depends on a lot of factors).

How much is 50km in print time? Assuming an average speed of 300mm/s that would be approx. 46 hours!

In other words, the generic MGN12H carriage needs 1-2 times per week maintenance.

How much lube is suggested (horizontal mounting)? 70µL for MGN12H. For MGN9H it is 30µL!

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[-] [email protected] 3 points 1 month ago

The 50km figure is out of the HiWin application note at 30% load capacity. Even with 0% load it won't go above 150km.

Looking at the Thompson-Link: It is for the self-lubrication block (long-term lubrication unit) which indeed has a much higher endurance. Raising maintenance intervals to roughly once per year. As far as I know, they are only available for MGN15 and larger.

this post was submitted on 03 Jun 2024

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