Tonmp 100 PCS 608-ZZ Ball Bearing - Double Metal Sealed Shielded Miniature Deep Groove Bearings for Furniture Wheel,Skateboards, Inline Skates, Scooters, Roller Blade Skates (8mm x 22mm x 7mm)

I am pleased with my order and is a great deal. So far, I found one bearing a bit crunchy and will try to clean it. Bearings will be useful in my projects.. thank you.

Product was packaged in two little containers ideal for storage. It’s exactly what it says it is 608 bearings can’t go wrong at this price

The quantity is large and the price is cheap, but I don’t know if it can be transferred at high speed

As described

Some are super smooth and some are a little gunked up and probably need to be taken apart and reoiled. But I find them addiquite for my some 3d printed parts I made.

Having been bitten by inconsistent measurements in the past (with other types of components), I measured one pack of 12 and found that the inside diameter was between 8.05 and 8.10mm, and the outside diameter was between 21.92 and 21.98mm. Id say these safely have a tolerance of 0.1mm, while my 3d printer typically has a tolerance of 0.35mm, so these should work pretty well for me and not significantly impact the tolerance of my builds.

Bought 200 of these. Briefly looked at all of them when they arrived. Three had obviously damaged seals. One was damaged enough prevent smooth rotation. Clearances are sloppy, but I didnt attempt to measure that. Seem to be a good value for non critical applications.

If youre using these for skateboarding or something else that puts them under heavy load WD-40 will probably ruin them, but for 3D printing if you give the bearings a quick shot they loosen right up.

A spray can of white lithium grease is 100% necessary to get them moving. One bad one out of the 20 I lubed. Worth it though considering how cheap this is for 100.

Wouldn’t recommended for skating either