The best explanation of preloading a bearing block on the internet.. hands down.. incredible presentation sir.

A pair of angular contact bearings opposite one another is normally what machine-tool builders use in higher-end blocks.

That's why on my conversion I'm using tapered roller ones.😁

I used those same Enduro bearings with a spacer for my machine, but I also used a stack of Belleville washers under the nut to make it easier to set the preload. Also I've got two ballnuts back to back on each ballscrew again using stacks of Belleville washers to preload them against eachother. I've used it a lot over the last year and a half and still no backlash 😎

​@Loopyengineeringco Hi i work in bicycle shop. Enduro bearing with "MAX" in the name, they are not designed for full rotation, only up to approximately 45°.

Quality thrust bearing assembly comes with angular contact bearings . Cheap Chinese copies use cheap bearings as they are a clone not engineered.

Could you put an actual thrust bearing in there?

i replaced mine with angular contact bearings on those..

they do make 4 point contact angular bearings that are good for load in both directions. fyi

where did you get the bearing from