Trouble in 5 axis Paradise

So found the bridge boy 5 axis. It was really promising up until I reviewed the design. It seems to be missing preloading on it’s axis’.

Now when designing an axis you use either preloaded radial load bearings or axial loaded bearings in properly loaded pairs, but I think I’m seeing one bearing on his axis’. I may be wrong. I’m just not getting how preloading is happening here.

It was the best example I liked, but I must be missing something.


Awesome! I’ve found a starting point for designing this axis! Bicycle bearings. I needed a large center bore. I think these will work perfectly. There very common, so also very cheap! 4 of these will be all we need.