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

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.

Inner races have very poor tolerances... guess you get what you pay for but I really wouldnt consider these rideable on a skateboard, wheels wobble pretty hard. Very thick grease on them too.

I bought these to use in DIY tools with parts I’ve made on a mill or lathe. I made the mistake of not reading all the reviews. If you want cheap bearings in bulk, this is a great buy. If you want any kind of quality, keep looking. They came in two packs of five tubes of ten bearings each. Every single one of them has some kind of rust. I didn’t expect any rust. If I’m going through the trouble of hand carving metal on a manual mill or manual lathe to build a tool, I don’t want to use rusty parts. I doubt I’ll ever buy these again. The only reason they got a second star was because of the low price per bearing. I’m sure I can find something to do with them, I just can’t use them in anything I ever want to sell if I want to build any kind of reputation for quality work.

Overall very decent bearings for fidget spinners. Not Amazing, but the affordability alone makes these bearings a competitive product and after thoroughly cleaning them they worked well and spin for a decent amount of time. If you are using these bearings to make spinners as gifts (as I did) then these will work just fine. If you are making them to sell… I would probably pay just a little more for a higher quality bearing. I am not sure why I liked the “single lip contact seals” of these bearing so much but they were very easy to remove for cleaning and better yet easy to put back onto the bearing afterwards. Just don’t pry them up where the “608RS” is stamped as they are thinner there and are more likely to break in that area. Taking everything into account I would say that you get a good bearing for the price. The only thing I didn’t like (which cost a star 4/5 instead of 5/5) was the lubricant that they used inside of the bearing. I am not sure if they used a silicon or what but when I received the bearings, they were stiff and sticky and didn’t want to spin. With other bearings I was used to having them packed with grease. This was not the case here. These bearings were hard to spin and were pretty much unusable directly out of the package. These bearings were not packed with grease (as many bearings are) and when I took them apart to clean them, I didn’t see any grease at all. As I mentioned before they seemed sticky as opposed to being slick or slippery and I had a difficult time even spinning them. I figured I would simply soak them in 100% Pure Acetone as this is usually enough to remove lubricants from bearings that I have worked with previously. Unfortunately, after soaking them for over 24 hours in Pure Acetone (shaking the container occasionally) they were still stiff and sticky! I almost didn’t believe it. I soaked them for another 24 hours and they were still sticky! I ended up having to use some Carburetor Cleaner and then an Engine Degreaser to cut through whatever was making them sticky. I was kind of shocked at how resilient this sticky substance was. After finally being able to remove the sticky stuff from the bearings they smelled pretty bad (engine degreaser smells). So, I soaked them in 100% Acetone again for a couple of days, took them out, sprayed them off with compressed air while spinning each one and then I let them dry. They still kind of smelled so I soaked them again in a clean container with fresh and clean Acetone and that seemed to do the trick. Kind of a lot of work I suppose. But once they were cleaned the bearings fit perfectly, spun well and helped make some pretty good custom fidget spinners. If you don’t feel like thoroughly cleaning your bearings when you receive them then you might not enjoy this particular product. If you are willing to spend some time cleaning and applying some of your own elbow GREASE to get these bearing clean and spinning properly then for the price you probably can’t go wrong.

The price is really the only reason they earned 4 stars. The quality and function varied wildly within the batch; some of the stamped steel bearing cages were deformed to the point of being almost completely locked up. However, they werent too greasy or messy and all of them were dimensionally correct. They came with a heavier grease in the bearings, more fit for doing work than hitting maximum RPM. I needed about 60 of these for my project and had to trouble coming up with that many acceptable pieces out of the hundred, so Im satisfied.

i needed 63 of these to biuld my MPCNC, they seem to spin fine and fit right what else could you really ask for out of a bearing

These bearings are not hardened as advertised. Upon disassembling, the bearing races and even bearing balls were not hardened and could be easily deformed with slight pressure between pliers and were also easily filed with low grade carbon steel hand files. The wobble was also significant, with the inner shaft and outer being able to skew in excess of 4 degrees without load. The seals were also garbage with holes and flashing still present, but that of lesser importance. Perhaps a more telling sign is the warning in the photo: Note... not professional bearings. That is, these are not bearings any company would use in a consumer product. Because they are not precise, wear will increase. Because they are not hardened, they will easily abrade away. The thick grease is likely there to disguise the rough texture of the races and the already malformed balls. If you use these bearings, do not do so in an expensive piece of equipment or in a skateboard where a bearing failure could mean a trip to the hospital. Go ahead and drop the same amount of money on 6-12 good bearings from a reputable source. If, however, you are going to make a fidget spinner, go nuts. Thats about the only use where quality is of second concern.

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.