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lm8uu Bearing

Linear Ball Bearing - 8mm diameter [LM8UU] ID: 1181 - $2.95This linear ball bearing is sort of the opposite of the radial ball bearings you may be familiar with. Its intended to slide along an 8mm linear shaft, rather than rotate around it.  These are very basic bearings, they're meant for a stepper-motion controlled setup so they're not Easy RepRap - 12 LM8UU Linear Bearings for  Pretty hit-or-miss in terms of how many of them will suddenly start feeling like they're full of sand. I slid one along a hardened, chrome steel guide rod one day 
3D Printer Solid Polymer LM8UU Bearing 8mm  10 Pieces Igus Drylin RJ4JP-01-08 Prusa i3 Mk2s Prusa i3 Mk3 Anet A8 Prusa i3 3D Printer RepRap LM8UU Bearing X-Y-Z Axis replacement.  JIWINNER 12 pcs LM8UU Linear Bearings for 3D Printer.  Pack of 7 High Quality RJ4JP-01-08 Sold polymer Linear bearing a direct replacement for the 
 

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