608ZZ 8 x 22 x 7 mm Deep Groove Ball Bearing, 20 Pcs Double Metal Shielded, Fit for Skateboard Bearings, 3D Printer RepRap Wheel, Longboard, Roller Skates, Inline Skates, Scooters etc. (Pack of 20)

The media could not be loaded.  I usually read reviews before buying an item, but for this, I didn't. I saw the good reviews and purchased. I received these and couldn't figure out why they got such great reviews since I was using these for making homemade 3D printed fidget spinners. This bearing is also used for skateboards and roller blades which makes sense that there would be a little more friction on the bearing. I easily solved the friction issue by laying out all 20 bearings on a foam plate and spraying them with WD40 lubricant. I then picked them up one by one and worked the lubricant into each one by spinning several times. They sat with an overspray of WD for maybe 4 hours and I just put a spinner together and the video shows the results. Very happy with my purchase. Would give it 5 stars if I wouldn't have had to modify.

Very happy with these bearings - so far. They are a bit sticky right out of the package, but no reason to be disappointed, simply use some machine oil (I used the machine oil that works on my air compressor and air tools) to clean the bearings up, then wipe clean with a soft rag. Anyway, these are meeting my need for less expensive guide bearings for my bandsaw. I'm sure someone will caution using these for this purpose, but the truth is their made to run at higher rpm than I run my bandsaw, their sealed - unlike the bearings that come with the bandsaw so that sawdust doesn't build up quickly in them causing them to seize then explode like the bearings that are sold specifically for my bandsaw, they appear to be lasting longer then the ones sold specifically for my bandsaw, and they cost nearly a third of the price of the cheaply built bearings that are sold specifically for my bandsaw. So 20 bearings for about a third the price of 6 less quality bearings? To me that's a no brainier and a win win. (Note: my bandsaw is a Rikon 14" 10-325 model - please make sure that if you decide to invest in these bearings for this purpose that your not violating your warranty, unless you really don't care. I'm past my warranties life and these bearings, in my opinion, are actually better than the ones sold specifically for this bandsaw, so I've no doubt I'll be getting more for this price!)

very satisfied

They don't spin right away. They coat them in some really sticky packing grease. That needs to be cleaned off, and that isn't an easy thing to do. When you do get them clean they are a bit crunchy. All in all they are cheap bearings. You get what you pay for.

So far so good

I more than go 6 months before even a bearing gives me any problems. With this its no problems quadskates and 16 bearings new their fast.

These are straight forward skate bearings.My project was to create spool holders for my 3D printer's filament spools. It makes the spools spin easier and takes some strain off of the extruder motor that pulls the filament from the spool and feeds it into the machine.The spool weight is just over 1.2 kilogram (approximately 2.4 pounds) and these have absolutely no issue with that scale of weight. I only need to of them per spool holder, so one box is more than enough.

I'll give it 5 stars, but I do warn of possible weak metals in the mix. I used them for anti-wobble connectors on an Anet A8 3d printer and while pressing one into the connector, it collapsed the race protector. They do work and are smooth as glass when it comes to spinning them. I don't see how they could spin free enough to use as a fidget spinner bearing, but you never know til you try. So far, it is a pretty good product for the price.