Understanding the bearing block

[Ricardoco]

A pair of, or a single double row angular contact bearing, is generally used to resist axial forces and eliminate end float. I think the problem with thrust bearings is they have to be mounted accurately - each side of the block they are mounted on must be parallel otherwise they will periodically bind. Angular contact bearings probably have a lower coefficient of rolling resistance, though I've not checked.

Thats the word.. Axial... i just couldnt think what it was at 4 in the morning lol..

As for type of bearing I think Jonathan has hit the nail on the head. from a self fabrication point of view, I found that angular contact bearings and the housings were easier to use.

[Rogue]

As for type of bearing I think Jonathan has hit the nail on the head. from a self fabrication point of view, I found that angular contact bearings and the housings were easier to use.

If my current thinking is on-track then I'm hoping the basic homebrew block would look something like this:

[Jonathan]

No, not like that. Move the 'wall' in the middle of the block to the edge, and have one plate on the other side to press the bearings against that. Have a look at the BK/BF blocks on eBay/Zapp if you're not sure...

The way you've drawn it makes it harder to machine concentrically. The standard way only requires one hole to be bored.