24 PCS 608-2RS Ball Bearings – Double Rubber Sealed Miniature Deep Groove Ball Bearings (8mm x 22mm x 7mm) (608 2RS)

great replacement for rollators

Works great and fits well. I do not use these for skateboarding so this review isn't for those action type users. I use these for other projects that aren't for high speed use but rather for heavy loads that move slowly.

These are good value bearings depending on what you're after. The amount and quantity you receive for the price make them good value, but the quality may not be sufficient for what you're after. My notes: - The seal appears to be vinyl-only and doesn't fully seal off because of shrinkage in this design, so there will be slight holes for particles to get into the bearing. Better quality 2RS's have seals made of rubber-coated metal. - There was no grease, which is the opposite of what Chinese bearings usually have (overloaded with cheap grease). - Tolerances varied, some were rather loose, and others were tighter. - Many bearings have differing levels of processing steps, some were missing an inner chamfer here or there, or had a partial chamfer. - They were well packaged in mini plastic boxes 12 a piece. - A little elbow grease can improve their performance (remove seals, soak in alcohol or acetone, and relube after drying). Now about that value comment. If you're looking to use these in a project that requires a high degree of accuracy, I'd skip these. These might be a Grade B or QA/QC rejection product (meaning they were rejected, but still saleable in some way). If your project doesn't need that accuracy or a tight seal (e.g. it's for something like filament spool holders), these will work just fine and the price is great.

Perfect for what I need with 3D printing nd great pricing

I got these after reading a review saying they come ungreased, they don't. I tried washing 3 times though 91% iso and dawn in an ultrasonic cleanser and they seemed to be even stickier than before I put them in. I tried LA's Totally Awesome cleaner straight and it took the grease right off after only 1 time through the ultrasonic cleanser (3-5 5min cycles and some brushing). tossed them in some 3-in-1.

Ball Bearings have an enormous amount of friction - they don't spin at all. I returned mine right away.

was missing 2 bearings out of the pack and 2of the bearings dust shields were damaged. So for the price they are good, quality control could be better.

Easy to install and they spin fast and smoothly.