100 Pack 608-2RS Skateboard Bearing, Rolling Bearings, 8x22x7mm 608rs Bearing

85/100 worked. 15 either broken or wont rotate. If this was a hug school exam Id say hey, solid B! But it isnt, so I gave it 3 stars instead of 4. If you need 100 working bearings youll want to order more than one package. If you only needed half, like I did, this works out ok.

OK, just OK. You get your moneys worth, but dont expect too much when you are paying about 25 cents per bearing. They arrive in industrial dirty condition, so you need to wipe them down with some WD-40 before use. Check them individually, I had one bearing missing a seal, and one bearing that was just useless. Several are grindy enough that I will use them only if necessary. The seals are good if you will be using these bearings in a dirty environment, such as shaping wood with a CNC. But the seals alo add friction, since they tend to rub against the inside of the bearings. If you are using just a few bearings, I would get better quality over quantity.

The inner race has the worst tolerances ive ever seen in my life.

As advertised

These are worse than bearings packed with sand. 30% of them had flat spots on the balls in the bearing that are supposed to be perfectly spherical. Other bearings had extra width on the inner race making it not fit into my application. Some of them the races where ground on a bias making the bearing wobble left to right and not track true. Every single bearing was so stiff when I recieved them that I had to spin them with my drill to get them moving, but now there is so much slop that it looks like bearings I should be replacing before even installing them. The runber dust shields should in theory seal on the inner and outer races; theese ones however let you see light through.... So bottom line if you need 45-50 extreamly light duty, wobbly noisy bearings this is the set to get. Otherwise stay away far far away. If you are thinking these might be good enough for a DIY CNC They are NOT!!

these are better then bearings on a $20 skateboard from walmart

Great value for the price.

there is an incredibly thick grease coating all of the bearings, making them spin VERY poorly. after soaking some in soapy water for 8 hours, it kind of helped, but they seized up again after drying. I used high quality PTFE lube on one, and it still preformed worse than a bearing I pulled out of a trashed fidget spinner without any added lube. Complete garbage.