Sackorange 608 ZZ Skateboard Bearings, Double Shielded,8x22x7 Miniature Ball Bearings（Pack of 20)

These bearings dont seem to spin as freely as I hoped. Not sure if its due to the amount of lubrication but these are not smooth at all. For example you could use them in a fidget spinner but dont expect it to actually spin. Very tight so for that Im rating it lower.

Came quickly and just ad described, durability is something Ive have to see. Size aas correct as well.

Two out of 20 are very rough and poorly made. Quality control is questionable. All bearings needed break-in to spin. About 5 spin well, rest are just mediocre.

Thse seem well made. The dimensions are quite accurate. I found absolutely no rust. They spin amazingly well for the price. Out of 40, Ive had two that grated a bit, but none that didnt spin at all. As other reviewers mentioned, they come packed in heavy grease (probably to avoid corrosion), and you need to soak them in PB Blaster, WD-40, or some other light penetraiting oil. Im using these for 3D printer spool holders.

Used to replace bearings in a rollator walker.

I was worried at first because the didnt want to spin, but once I put them on my board, they (for lack of a better word) loosened, it was smooth cruising. Great product..

Used with 3d printing projects. Sizing seems accurate, and rotating action seems smooth with low friction. Looking forward to finding more uses and buying again, cause its FUN making stuff

Ive used these for around a year in a few applications and overall if youre looking for something low speed with radial only (no axial) load then these will probably be fine. Anything high speed (greater than around 200 rpm) will quickly destroy the bearings and anything with any axial load will quickly destroy the internal balls. I used these in a cnc router as guide for lead screws and the axial load destroyed them in less than 20 total hours of use.

Had to clean with WD-40 but after that they all spun freely no problem

Picked this up for a spool holder and they worked great! Had to spray down with some WD-40 and roll a bit but once that was done they worked great. Have a few more filament guides Ill print that will use this but great for what they needed to do.