LEGO Compatbile Medium Sized Thrust Ball Bearing

Description

LEGO’s turn table has considerable friction and rotating a model at an exhibition for a whole day would ruin it. A thrust ball bearing is necessary to decrease the friction. I previously 3D printed a large bearing for my Unikitty. For this year’s exhibition I needed a smaller thrust ball bearing so I designed a new medium sized ball bearing. It includes liftarms to hold a worm wheel which results in a rotation ratio of 1:78. More information is available on [my web page](http://www.bartneck.de/2017/05/24/lego-compatible-medium-sized-thrust-ball-bearing/).