12 PCS 608-2RS Deep-Groove Ball Bearing - Double Rubber Sealed Shielded Miniature Deep Groove Bearing (8mm x 22mm x 7mm)

A very good product. Will buy again.

Works as it should but I'm not using them for that. They are bearing fir 3d printed gears and they are doing just fine.

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.

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.

I wouldn't put them in a precision piece of equipment, but great for 3d print projects! How can you go wrong at at this price. Using them for 3d printer projects that won't be subject to high speeds or heavy loads. they are working great.

These bearings hardly turn. Even soaking them in acetone over night to get out the packing grease. They still turn like they're packed with sand. There terrible.I roller skated all my life and had bearings like these and after soaking them for 30 minutes only they would spin like those finger spinners. Don't know what the hell are in these. Very disappointed. Can't return because I pulled all the rubber rings off them to thoroughly clean them.

I have used these in several projects and have had a great experience all around. They are well machined, and I haven't come across any defects. Pop them into to your project and get on with life. I wish more of life worked that way.

Came in two boxed. Perfect size, works like they should. Good Buy.

Excelente rodamiento

El balero trae medida de 8 mm de interior y viene más grande por 3 milésimas, realmente es un producto malo