XiKe 10 Pcs 608ZZ Skateboard Bearings,Double Metal Seal Bearings 8x22x7mm, Deep Groove Ball Bearings.

Worked as describedGood value fit and qualutym

608ZZ is used in may consumer grade motors, such as those for shop fans and blowers. Most of the 608 bearings available on Amazon are "skateboard rated," meaning they are manufactured to loose tolerances and use rubber seals. This means that if you use skateboard 608 in an electric motor, you will get lots of noise and reduced bearing life. These bearings are proper 608ZZ, made to tight tolerances and sealed with metal. The tolerances are so tight you will need to clean off rust from motor rotor shafts for the bearings to fit, this is a good thing, shows that the machining on these bearings are of close tolerances. A close tolerance bearing is a quiet bearing. I use 608 to repair fan motors, and these are even quieter than the new originals sometimes! If you need 608ZZ for electric motors, you will be hard pressed to find a better bearing for the cost than Xike. They are even packaged in a cardboard box and a foam tray, really shows this manufacturer cares about their product. Will recommend and purchase again.

Had a bearing noise in the fan on my window AC unit so I tore it down to inspect. I worked for an electric motor repair shop so I had a little upper hand on the repair. Ordered these, put it back together and all is well.To the people complaining about the labeling on the bearings here is a little lesson. A 608 is the exact same size and quality as a 608z or a 608ZZ or a 608RS. Some bearings only put one Z on it because the only difference between a 608z and a 608zz is the 608z only has a shield on one side, whereas a 608zz has a shield on both sides. A 608 is unshielded and a 608RS is a sealed bearing.

Great service and a quality product.

As others have probsbly said, if you're using this for a fidget spinner or something that requires little drag, you're better looking elsewhere.The drag is so high that it stops nearly immediately. In some applications this probably isn't a problem, but something to keep in mind.When it comes to the dimensions, I had no issues and everything was within the tolerances, which is great.If these just had slightly more spin, I'd be extremely happy.However, for some, the drag might actually be beneficial and may work for your overall design.

I used these to replace the guide bearings on my WEN 9" Bandsaw. The WEN takes 2 different bearings, 3 of these and 3 626ZZ bearings. I bought a sleeve of each so I have plenty of replacements for the future.

I tested these new Vs the uxcell ones. The XIKE ones spin about 50% more free and are spec’d to 30k plus rpm. Perfect for my brushless motor that runs only 22k rpm. Buy this 10 pack, don’t bother buying the uxcell 20 pack.

I too also used bearings for my crazy loud window ac unit. Now it is as quiet as can be. Stamping says 608z but it is double sealed and no bearing showing on other side. So far there great for using for a motor