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

When I first got into 3D printing, I didnt know these things existed. I quickly found, however, that the 608 is the bearing of choice for many 3D-print projects that need rotating parts. I really dont know how long it is going to take me to use all of these (so far Ive only used them in three projects), but I couldnt pass up the quantity price. They fit perfectly in every project that calls for a 608, they turn smoothly -- whats not to like.

WayneChicago wrote an excellent review. You should read that before reading mine. He outlines is perfect detail all the reasons why people buying these are complaining. Only he says it with tact and finesse. But I dont have that. So if you want a more direct rebuttal to the absolute nonsense youll read in the product review section about these being akin to sand-filled garbage, then keep reading. However, If sciency words are just flowery nerdspeak to you and breaks your brain, then just sop reading now and go buy the grossly overpriced BONES bearings. They make the cool whizzing sound on first rip out of the box. Plus theyre all shiny and you cant put a price on shiny, can you? Now....If youre not a mental tree stump and words with more than 3 syllables dont frighten you, then by all means, continue on! General Complaint: These are covered in some kind of oil and dont spin. Rebuttal: That is CORRECT! The insides are packed with grease which is thick. Think cooled bacon grease. When you reheat cooled bacon grease, what happens to it? It thins out and becomes more viscous, right?? Same thing applies here. These are packed with grease because theyre designed to be run in machines for long periods of time. Which means heat from rotational friction, which means the grease viscosity inside the bearing thins due to thermal conduction. This is WHY they were built the way they come in the box. So you can use them in machine type applications right out of the box, where thermal friction needs to be considered. Ok, but can I still use them for skateboard or roller skate wheels though? YES, you can but you need to do a little work first. No big deal if youre not lazy. If you want these bearings to spin like a fidget spinner and go whizzzzzzz, you have to dissolve the grease inside the bearings and use a thinner lubricating agent in its place. WayneChicago goes over how to do just that in his review. So I dont have to. Thanks, Wayne! *fistbump* And if you cant find WayneChicagos review, dont act like you dont have Google. Just look up How to dissolve grease in ball bearings. This isnt rocket science... As far as I can tell, the outside grease feel is just machining oil which is often times applied to metal surfaces as a water repellant to keep the surfaces from rusting due to atmospheric conditions. Wood workers and machine shop operators know exactly what Im talking about. Probably some mechanics too. Why would they do that? Well...where are these things made? Is there any water that might get into the bearings in transit from the factory to your house? Yeah, there is. Theres literally an ocean of it. Highly corrosive salt water to boot. So, in order to make sure these dont arrive as little jammed up rust cakes at your doorstep courtesy of the Amazon delivery guy, they coat them in a light oil or maybe even some of the inner grease to prevent that from happening. Youre WELCOME!! Its a prophylactic measure against people who dont know better. And also so people dont buy these and end up in their review section complaining about that too. Like so many other people are out here doing. The people complaining simply dont know what they dont know. And are trashing a decent product for the price from a company that is CLEARLY putting in an honest effort to deliver value to the consumer for a VERY REASONABLE PRICE. Some of these might have manufacturing defects, Some might last longer than others. When I bought mine they were under $0.30 each. Im not putting mine under heavy load for long durations anyways, and Ill have PLENTY of replacements should some of them give out, as they sometimes do. I have not tested them yet but I dont need to to know that I DID NOT get screwed on the transaction. This is EXACTLY what I expected and Im sure will exceed my expectations in performance. Sure, you get what you pay for. But if you know what you need to know before making a purchase, youll find INCREDIBLE value in these bearings given youre buying them for the right application. If you find yourself with a chapped ass complaining about this product because you didnt know what you needed to know before making the purchase, chances are you also didnt take my advice and spring for the BONES. And thats on you, playa... -5 Stars.

I used these bearings on two pairs of rollerblades. 32 bearings. 1/2 are breaking down and have spilled grease. 1 bearing completely blew out and shot bearings everywhere. Ive been rollerblading since 93. Its the bearings. Unsafe at any speed.

They work for what I am using them for .

These are not suitable for skating, or fidget spinners. They are full of heavy grease, and the plastic cover rubs on the inner bearings balls. The bearings are probably made for very heavy machine loads, because the ball cage is metal and double sides. Even de-greasing them and re-applying a light lubricant will not work. Maybe for other uses this bearing is OK, but definitely not OK as a skateboard bearing, which is what the product has in the title during the time of purchase and review.

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

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

Muy mala calidad lo que se muestra en la foto no tiene nada que ver con el producto

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.

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.