Hi I got some of this stuff from work it was framework for some saftey fences(1515) it was going to the dumpster so it became mine.I'm planning to build a cnc router with it . I'd like to use the unibearings they offer but I'm concerned with tortional binding and drag . Would these bearing work on a machine 40"x80" used mostly for 2d routing ie: cutting out patterns?,or would there be to much friction and twisting therefore causing lost steps?