High Quality RJ4JP-01-08 Sold polymer Linear bearings are great replacements for LM8UU linear bearings - quiet and effective, very low friction. Product is manufactured by IGUS - leading European manufacturer of linear motion products.
These are direct replacements for LM8UU bearings, used in inexpensive China made 3D printers such as Anet A8, Anet E10, HICTOP, Geeetech and other models. Well known advantages of IGUS polymer bearings are - very long service life, compared to LM8UU bearings, smooth motion and many times lower noise levels.
See attached drawing for bearing dimension.
- 7 x IGUS Drylin RJ4JP-01-08 plastics bearings.