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

I love these for 3d prints! They dont spin forever like a fidget spinner would, but then again they shouldnt. The grease is viscous enough to prevent free/loose movement on the filament holder that I printed. If these spun easily and for a long time, I would have tangled filament! I suppose the grease could be replaced if you need a longer spinning bearing, but you might be better off getting another product.

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.

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.

Used to replace bearings in a rollator walker.

Filled with some of the cheapest thickest grease they could get. Takes a ton of effort to get these spinning smooth. Cleaned out the grease with brake cleaner, and used an oil meant for ball bearings and they spin much better now, but nowhere near high quality bearings.

This is a very high quality bearing. As others have stated, its got a good thick lubrication applied. Out of the box, they are perfect for heavy loads. For most tinkering and crafting where you want as little friction/resistance as possible, youd probably want to heat these a little and get rid of that lube to install a lighter weight lubrication. Other bearings might spin better out of the box, but the quality will probably be lower. Id recommend these bearings.

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

Good bearings. I have used these in a variety of 3D printed projects. They exhibit a little more friction compared to the bearings found in fidget spinners, but they will last much longer I am sure.

Two out of 20 are very rough and poorly made. Quality control is questionable. All bearings needed break-in to spin. About 5 spin well, rest are just mediocre.

works in a lot of prints for 3d printers. i used to add to prints for a mount for the filament spools and a filament feed guide. greatly reduces tugging and grabbing and i have plenty of extras!