Quote Originally Posted by silyavski View Post
Hiwin Lubrication Manual, so you know the proper quantities and other stuff.


Yes, that's what i meant. Drill the rail and inject grease through the rail.



Now in the manual 4.5 they say there is a thing called "Self-lubricating kit ‚E2’ "
Drilling the rail isn't going to help very much, you may as well just grease the rails for what good it will do. This method will only smear grease on the outer surface of the balls and the rest will come out the ends past the seals, only a very small percentage will get to where it matters. You want grease or lube on the inside of the bearings so it flows thru the circuits and end caps.
Yes it's better than nothing but the pipe and tube method is easy enough and you know the grease is getting exactly where it's needed.

Personally I'd fit a timer lubrication pump and pump oil thru the bearings. Timer pumps from china are relatively cheap now and they can be programmed to pump at regular intervals so you know the bearings are getting lubed and flag up or E-stop the machine if low on oil etc.