100 Pack 608-2RS Skateboard Bearing, Rolling Bearings, 8x22x7mm 608rs Bearing

I was expecting to get the same bearings in the picture which showed ABEC-7 bearings. They also came very dirty and greasy. They barely rolled and was just a half step up from the 20 year old rusty ABEC-1 bearings that were on the board before hand. Changed the wheels and trucks so I know that wasnt the problem.

Muy bueno

Good bearings. Slight surface corrosion on outside but none visible under seals. Light coat of oil here and there but no evidence of intentional lubrication inside. Clean, lubricate, and inspect seals before use.

Three are a bit crunchy but the rest all spin nice after soaking in pb blaster..thx to all reviewers that suggested this. Yet to know how durable So far so good

Only used 4 of these so far but they seem pretty good for the price

Perfect bearings for my truck bed drawer project. Exactly as advertised.

WayneChicago is right on with his review and the cleaning. I bought some ZZ bearings I thought were compete rubbish (ironically the same brand/seller without knowing) Then I bought some more expensive RS ones, that were nicer, but a lot more. I needed a lot for my project, I saw his review and the comments on cleaning and I took a chance. When I realized the rubbish ones were the same brand, I tried cleaning those first and I was very happy with the results. Heres my observation/experience. Originally I soaked them in WD40 for seconds, maybe a whole minute, but I thought the WD40 would cut that grease. I think with some, probably the ZZ ones I had, the grease hardens and particles become the grit. Soaking for 6+ hours certainly broke down the grease. I noticed 2 ZZ didnt spin as fast as the others, so I put them back to soak. While soaking, I tried shaking them up every now and then, mostly it just sat there. Upon taking them out, I spun them before drying, some didnt spin so great, but got better and better as I spun them. I think longer soaking may have helped, I probably should have let them soak all day. The set I got came in 2 paper boxes. Each box had 5 tubes of 10 bearings. The bearings were all uniform, and generously coated with some grease. They didnt spin very well in that condition, There were no deformities, there were no defects in the lot. My application is fidget spinners, and after cleaning and light oiling they spun exceptionally well. If you need to take them out of the box and use immediately these probably arent for you. Unless of course your application requires the grease. But if you dont mind cleaning and oiling. They are quite the bargain. Just remember if you clean them, do it safely and well ventilated and Im thinking the longer they soak the better. The cleaning liquid I used was dark blue/green after all the soaking.

You get what you pay for. I realize these are only ABEC 1 rated. But, wow are they sloppy. the 8mm hole has a decent amount of variation. turned a shaft to fit the 1st bearing perfectly, the next wouldnt go on, and the next was loose.Once a shaft is fitted to the hole, ALL i tested (gave up after about 20) have more wable than Id expect. IE, spin it on a fixed shaft, and the outside casing doesnt spin even close to true with the inner casing. Some were pushing almost 1/6th inch.

These bearings arent a bad deal if you know some things going in. I am using these for a filament drybox for keeping 3D printer filament dry. Out of the box, these have a sticky machine oil/grease on them (probably to prevent rust) and do not free spin very well. If you open the seal with a knife and blast them with white lithium aerosol, they spin very easily. It doesnt look like they are packed with any kind of lubricant inside the bearings.

I had purchased these to use in various 3D printer guides, but they have way too much friction. Instead of rolling they just sit there as filament passes over them. I tried printing a fidget spinner as well. As I spin the spinner as fast as I can, it comes to a complete stop within a couple of second. I guess you get what you pay for.