Review on 🔍 Optical Horizontal Bearing Bushing by CNBTR by Andrew Walton

Shafts, supports and bearing housings could be used but the bearings themselves were no longer needed. I wasn't expecting much given the very low price, but I was expecting at least something useful. Some reviewers have described them as rough, which describes how they feel. Someone suggested rinsing them with solvent before use, but that didn't help, at least not on the samples I got as the sand wasn't the problem. I took mine apart and the inner plastic rings were so torn that they were pinning the bearings. There was no way to delete them. I'm familiar with the performance of these bearings, having used the much better (and much more expensive) brands of Thomson and NGK at work.