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

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.

If you have 608 bearings for guides these are great and priced right. You can replace every year for a very cheap investment.

Theyre basic sealed bearings from China that youre not supposed to open. They dont run fully smooth out of the container. If you work the bearing for a while, it does improve. But without disassembling and cleaning, it wont spin like a fidget spinner. Im using it for a roller on my Ender 3 printer, and for that its been fine. So just decide how smooth you need it to be. 3 of 5 stars overall.

Used on rollators for a 270lbs person. She likes to try to get the thing to turn on the none turning wheels while shes sitting on it and twists the bearings apart. After destroying 3 rollators because I didnt know what part to buy, these make it not matter. Pop out the old one, push in the new one and off we go again. As far as durability, she has destroyed one of these yet going on 8 months. So better than the original.

I got the bearing to use for the 3d print parts, but out of the box the bearing does not rotate too well. You may need some clean up and re lubricant depends on the use. Overall its OK for basic use.

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.

Bought these for a custom fidget spinner. With the original grease, it spun around twice. Two rotations. I removed the dust covers and grease and they worked much better (though obviously dont do that on a skateboard)

They work. Theyre decent quality but from what I could tell, not for high precision applications. The center bore wasnt always exactly centered and several spun rough but did work and will be sufficient for my needs. Id guess these were pulled from old equipment as many of the ones I received showed signs of previous external wear. I also had to clean these up as they were sticky to the touch, smelled awful and were initially very difficult to spin.I soaked half in Mineral Spirits and the other half in Acetone. Both methods seemed to clean these up really well and they all spun freely after cleaning. Ill likely repack with better grease when Im ready to use these. For my project, im more interested in lowest possible resistance and not concerned with speed or

Bought these for a filiment guide i was printing. 4 stars only because they arent high end bearing but they are excellent value and come in 2 plastic tubes for storage. Must have for 3d prints

I bought these to replace old bearings in my bandsaw guides. They work fine, though I did have one in the package with substandard machining and you could feel friction when spinning it. I tossed that one and the rest were good.