Repack those kinda crappy MGN9’s or MGN12’s with high quality, super spherical, low resistance ceramic ball bearings. Make your HIWIN clones run like the real thing. (Easy but tedious process of ball swapping).
Each order contains 10 Si3N4 Ball Bearings.
We use Super Lube (92003) Silicone lubricating grease with PTFE as a repack for these.