Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Linear bearing with 6mm airsoft bbs for 8mm rod

by SirioB Apr 16, 2017
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Very nice design, I recently made something similar https://www.thingiverse.com/thing:2448272

7mm Linear Ball Bearing

Tolerances are not right, 8mm rod is wobbling around, linear motion is not great also. not even worth printing

Yes, they are not good as the linear bearing of a 3d printer. However mine have a pretty tight fit on the rod and the rod don't wobbles a lot, two of these bearigs make the rod stays in the axis. Try to measure the external diameter and check that it corresponds to the diameter of the stl, some printers don't replicate the objects with perfect dimensions. Also try to print these scaling down a bit. For improve the sliding try to lubricate the bearing, if you use plastic bbs probably dry lubricants (like graphite ones) work better. And use good quality bbs for airsoft gun.

This is awesome a printable bearing

Always amusing people reinventing the square wheel :-)