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

I needed ball bearings that ran smoothly for my application. These bearings are packed with grease and didnt roll smooth enough for my project. However, I think theyll be ok for other applications.

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

Seems to be solid standard 608 bearings, though they are packaged with heavy grease an do NOT spin freely. You have to take time an resources to properly clean them out with a solvent before RE-greasing or oiling them. Out of the box, they are stiff to roll an notchy. Once I put them in a sonic bath an regreased them, they were fine. Much like standard mid-quality sk8 bearings. For the price, sure, theyre fine enough for skating, but for 3D print applications, they are not plug n play, you need to coddle them, therefore, I took a star or two off the score. Better off going to your nearest skate shop for ready to ride bearings.

They work as designed and were cheap, used in a 3d printed project.

Im not sure if its the batch I got and the heat melted the plastic (doubtful being in Northeast), but these are okay. It was very sticky and barely spun, but after letting them soak in a couple sprays of T-9, they were spinning... but not spinning the way Id expect bearings to, but the minimum amount. I purchased these for my Powermatic PWBS-14 Bandsaw, and they fit and match for a fraction of the cost from buying them directly from Powermatic. If purchasing again, Id try another company.

Great service

Filled with some of the cheapest thickest grease they could get. Takes a ton of effort to get these spinning smooth. Cleaned out the grease with brake cleaner, and used an oil meant for ball bearings and they spin much better now, but nowhere near high quality bearings.

Was swapping these into a 1/5 rc car and out of the 20 I was lucky to get 6 that werent gritty. Well see how long they last but next time Ill spend a bit more and get some from a company that has some better tolerances. After blowing out the grease and re-lubeing they got a bit better but still not as smooth as I am used to. Plus side, they dont chirp but thats about it. Update - 7/31/21 - They chirp. Got gritty quick and not smooth. Look elsewhere.

Used these in a small lawn windmill. Only needed 2 but have plenty of spares.

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.