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)

They do spin, but dont spin well for my use, a couple came squished and dont spin at all

Picked these up for putting into 3D prints. I am using these bearings in low stress environments so I cannot comment to how they will perform in heat or high RPM uses. This cheap 50 pack is working well in my custom spool holders for my 3D printers. I have replaced the stock spool holders in my Anycubic Mega X, FLSUN Q5, and Creality Ender-3 with spool holders that use these bearings and they work fantastically.

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.

Must clean and use lite oil..

Excelente producto seriedad del vendedor

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.

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