Conical Roller Bearing

This is a fully parametric conical roller bearing.

Inspired by this design. My design is a bit more material efficient and has improved geometry to allow for a much wider array of possible sizes. The rollers' height and angle will change according to the number of rollers and their size. The housing is also 100% equation driven (height, width, race angles, clearance) so should not need any direct adjustments. I do not recommend playing with anything that has a trigonometric function.

When suitably glued (I just use superglue), they can handle a surprising amount of force, both radially and axially. The "glue channels" are designed to allow you to assemble the bearing first to ensure it works how you want it to, then drip a tiny amount of glue into the channels. The channels allow the glue to penetrate into the inner surface without the risk of making contact with the rollers.

If you want to add this into a custom design / application the inner race is a single piece and can be integrated into anything relatively easily. The outer race is in two pieces and needs to remain that way for assembly. I'd recommend just gluing the outer race, but you could integrate one of the halves into your design. Take care to ensure you can still install the rollers when you're ready to.

The attached .stls are a tiny one (rollN = 12, rollD = 3mm, rollC = 0.1mm), a normal one (rollN = 22, rollD = 5mm, rollC = 0.1mm), and a huge one (rollN = 32, rollD = 8mm, rollC = 0.1mm). The 608 & 6203 bearings are a little narrower (~26%) than standard. I've tested the 6203 (it's the cover photo) and I've also managed to make a 608 (the one being assembled), which uses 3.4mm rollers.

Lubed and glued, the 6203 performs incredibly well, but the 608 is still very "crunchy". I'm pleasantly surprised how well the 6203 turned out, but I still think you'll get much further by finding a bearing diameter your printer can make reliably, then moving forward with these dimensions in mind.

I've been using PLA (with white petroleum jelly for grease) because that's what I have, but I'd love to see how these can perform with some fancier filaments such as nylon or PEEK.

Feel free to add to your Fusion toolbox and enjoy. I'm looking forward to seeing what people will make from them / how far they can be taken.