CNBTR 8mm ID 12mm OD 3.5mm Thickness Bearing Steel Mini Groove Ball Bearings DIY Industry MR128ZZ Pack of 10

great

These bearings were used to replace worn sleeve bearings for small lathe handwheel shafts. The small size outer race was appropriate for the minimal clearance available. The application is shaft stabilization in low speed application and for that purpose, these bearings are entirely satisfactory.

As described!

Well made, runs smooth, don't know the longevity yet.

Received a packet of 10 pcs. They all seem to work fine but have only used two in an application so far. No issues.

Measured with calipers, dimensions are all completely accurate which is great. 8 out of the 10 roll very smoothly and I will be using them. Of the other 2, one grinds a bit and locks up every rotation, the other spins freely but grinds very roughly. I need smoothness so I won't be using those 2.

I purchased hoping to make L*g0 wheels with the steel axles. But they wouldn't accept the 5mm diameter of the steel axles.

1 of the bearings was damaged and hard to rotate although with how many that are in the bag, this is hardly an issue considering that there are 10 in a package.