NSK608ZZ 10Pcs Precision Bearings 8x22x7mm, Rotating Quiet High Speed and Durable ＆ Double Metal and Pre-Lubricated, Deep Groove Ball Bearings.

bought about 20 sets of these for building an animatronic pentecostal with my son. they worked out very nice. perfectly smooth and quiet.

I replaced the bearing in my flex shaft with these. The run quiet and cool even at high speed.

These are a bit more expensive than other similar Bearings here, but are far superior. A quiet, smooth running, Bearing.

These bearings were purchased to replace worn out ones in a Dayton fan that it is used for recirculating air in our house. The original ones lasted 10 years so took a chance with these as a replacement. They have been in about a month or so and are still running quietly. The original bearings were much tighter in the motor housing and difficult to remove versus these that I could press in by hand. I guess time will tell how long these last but so far so good.

I needed to repair my wireless fan and air purifier because they made noise when they were running. First, I bought and replaced several brand of abec 5 bearing on Amazon, but they make more noise because they are cheap and Chinese brand. Finally, I bought NSK's bearing, and I replaced it. My wireless fan and air purifier doesn't makes any noise. Do not buy Chinese maker. Don't waste your money.

My ac fan was very noisey. To buy a brand new fan. It will cost $125. Took fan motor apart and found bearing number. Install new bearing and I have a quite acUnit now.

as advertised

Title says these are rated for high speed constant use. Bought for pellet stove blower fan replacements and they lasted less than a month. They were the proper size and looked quality, but apparently these are only suited for skateboards.Edit: 12-8-2022 I removed the blower fan from the pellet stove and inspected the NSK bearings. There are 3 per blower assembly and one bearing was extrememely hard to turn, one required medium effort to turn and the outboard one seemed just a bit better than the latter. I removed the metal cover plate on the seized ones and could see the little grease that was used, was all dried up and crusty. It would appear they are using an inferior grease product and these will not survive in anything constant duty or anything that will elevate the ambient temp of the bearings. I literally put two drops of oil into the bearing and after a few revolutions, it was rolling much better. This was just an experiment and does you no good because the bearings are not serviceable and in my case, not accessible without ripping everything appart. So as I said previously, these are not good for anything but light duty ambient conditions like skateboards...and even then who knows. Many hours of labor lost by going with these bearings and $25 for the bearings themselves.