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

They pretty sticky out of the box but thats just because theyre packed with grease, a quick spray with some simple green followed by some compressed air and some oil frees them right up. You could skip all that and just blast them with WD-40 but I like to use actual bearing oil. That said, the tolerances are actually kinda terrible, they have quite a bit of slop in them and they feel rough when you spin them. I suspect thats why they over grease them, to hide the bad tolerances and low quality balls/races inside. I dont use them for anything load bearing or fast speeds, these are just used for the filament roller guides on my 3d printer.

I read a lot of reviews stating they dont spin very well. This is 100% true. When you get them, they are gummy. A spray of WD40 and working them a bit will have them spinning nicely in no time. I dont use them for whatever they were manufactured for, so I cant say if they are good for whatever that is, but for hobby projects or 3D printed stuff, they work swimmingly.

Used to replace bearings in a rollator walker.

very good for my job

Came quickly and just ad described, durability is something Ive have to see. Size aas correct as well.

Like others mentioned, these come packed in grease and nicely stacked in tubes. Once you spray a dab of WD40 on them they spin very freely and the dimensions are accurate from what I can see. I did receive one that was slightly damaged but the rest were all good. I would buy these again.

Im not sure if its the batch I got and the heat melted the plastic (doubtful being in Northeast), but these are okay. It was very sticky and barely spun, but after letting them soak in a couple sprays of T-9, they were spinning... but not spinning the way Id expect bearings to, but the minimum amount. I purchased these for my Powermatic PWBS-14 Bandsaw, and they fit and match for a fraction of the cost from buying them directly from Powermatic. If purchasing again, Id try another company.

I don’t know much about bearings but from what I’ve gathered, these are commonly used with 3D printed parts for printer upgrades. I figured I’d buy a set for filament storage and a filament guide. So far, these are doing just fine. I followed the advice of other reviewers and used a liberal amount of WD40 to get these in working order. I soaked a shop towel and put these in a ziplock bag overnight and the gunk previously seized these bearings is now gone.

They roll. Several of them have dents in the steel seals, but honestly, as long as they turn smoothly, I dont care.

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.