Lazy Susan Bearing Cartridge for General Use

This thing is a collection of multiple sizes of 3D-printed thrust bearings, or "lazy Susans", which you can add to your projects. I have provided a number of different sizes. They all require the same low cost 6 mm "airsoft" balls which are readily available. These provide very low friction rotational platforms even with very high applied weight.

For example, the "60x8" bearing is 60.0 mm in diameter and 8.4 mm in height. All x8 bearings are 8.4 mm in height to allow clearance for the screw. All x10 bearings are 10.0 mm in height.

The two halves should be printed with the ball races facing up (flat sides down), with high resolution (0.1 mm layer height). No supports are required. I prefer to use a hard plastic such as clear PLA deposited at higher temperatures. This creates a smooth and hard running surface with very low friction.

The halves are held together by a single M3x8 flat-head screw. The top is countersunk for the screw head and the bottom has 3 mm threads in the model. The screw should thread right into the bottom half with moderate force applied by the screwdriver.