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

These came pretty sticky thanks to whatever grease they oack them with, not sure I can actually use these for anything than a filament guide for a 3d printer, like most have said here it seems some cleaning and wd40 goes a long way but jt doesnt make up for it and if you dont own wd40 for some reason then youl have to spend more money on a can of that first before using them.

These bearings worked for what I needed them for (filament spool rollers). They were sticky at first but as other reviewers pointed out that was easy to fix. What cant be fixed is the variability of the tolerances. The diameter of the inner hole was inconsistent even on opposite sides of the same bearing. A few of them also came with the metal shields smashed. They can be removed pretty easily bit if you need them to be shielded I would look elsewhere.

Poor quality control. One of the bearings was kind enough to be missing a side shield so I could see the guts of the thing. The side wasnt in the tube, it must be somewhere at the factory. You can see the bearing to the lower right of that one is either made incorrectly or possibly inserted backwards? idk. Luckily they should work for my application since its pretty light duty.

VERY Noisy and Rough. I seriously question the ABEC-7 rating. I got these because they were low cost, and you get what you pay for. As other reviewers noted, they come in plastic tubes of 10, and are coated in sticky grease. I wiped them clean, flushed them thoroughly with PB Blaster, 3-in-1 oil, air tool oil, WD-40.... they spin freely but feel very rough and are noisy. Rolling them in my fingers I can feel the roughness and I even go so far to say that it feels like there is dirt inside, they catch occasionally and are that rough. These will probably be a good solution for slow speed applications where noise and smoothness is not a concern. For smoother, higher speed operation, and quietness, Im going to spend a few more $ next time. I have the same size bearings from another manufacturer which were a higher cost, but there is a night and day difference in quality. Ill be saving these for something unimportant and testing purposes only. Nothing I build can accept this poor of quality for more than a brief period.

I bought these to use for some 3D prints. They are skateboard bearings, so they come pre-greased. I would have preferred to have non-greased bearings, but it makes sense that they would be greased.

The ball bearings did do what they were supposed to, but didn’t do it well. The bearings were heavily greased to the point of no free spin. With a nice isopropyl bath they end up working for what I needed them for.

Its 608 bearings in a pack of 20, its pretty much exactly what it says. Came in 2 of those plastic tubes that are barely better than just shrink wrapping them but thats fine, thats all I needed :)

These bearings dont seem to spin as freely as I hoped. Not sure if its due to the amount of lubrication but these are not smooth at all. For example you could use them in a fidget spinner but dont expect it to actually spin. Very tight so for that Im rating it lower.

They come coated in thick greasy shmoo and dont spin well at all. but a few liberal sprays of WD-40, spinning it a few times in-between sprays, and they spin real nice. about 4 out of 5 spin well so far, some have what feels like metal bits in them that prevents super smooth spin. i havent taken the lid off of them, just sprayed the sides, and the WD-40 works its way inside. for 10$ getting 20 of these, even if only half worked, i would have been happy. im using these for robotics, not skateboards. packaging is a little lacking, but ive seen worse

I bought these to use for 3D prints instead of skateboarding, so my review doesnt necessarily reflect their intended use. Ive noticed for about half of these bearings, they tend to bind up and stop spinning at lower speeds. And they dont come with any greese or oil in them as far as I can tell. Ive sprayed silicone lubricant in them and that seems to make some of them work better, but most of the problem bearings still bind up at low speeds. They all function, but if you want extremely smooth and reliable bearings, Id suggest you look somewhere else. They functioned just fine for my project, but I think the quality control could be better.