Longboard Skateboard 608 ABEC-7 Bearings High-Speed Low-Friction Pre-Lubricated

son buenas pero no como esperaba, pero buenas

I bought these for a repair job on a Vacuum motor that used 608 bearings, I needed something quick but I was not happy with these bearings, somewhere notchy and rough for new bearings others where acceptable but every bearing suffered from wildly bad tolerances.The tolerances are pretty bad, they would not fit the shaft tightly and would slide on and off with no effort, they are friction fit and require hammering or a bearing tool to install/remove, the worn 10-year-old bearings I replaced were on there tight as they should be.The inner ID is 8.08-8.10 compared to the 8.00 mm Bearing I replaced, That's pretty bad. These are about 100 microns out of spec on the ID and 40 microns on the OD they are not even anywhere near the 0.0012 MM Or 1.2 Microns allowed deviance from the specifications.I ended up solving the problem with some epoxy on the shaft or I could have made a metal shim to friction fit, as it should be in the first place, I should not have to jerry-rig things it should be in spec like the rating states.Here is a list of specs for ABEC ratings for allowed tolerance deviation.ABEC 1: 0.0075 mm 7.5 Microns (0.000295")ABEC 3: 0.0050 mm 5.0 Microns (0.000197")ABEC 5: 0.0035 mm 3.5 Microns (0.000138")ABEC 7: 0.0025 mm 2.5 Microns (0.000098")ABEC 9: 0.0012 mm 1.2 Microns (0.000047")I would not recommend, many of them would roll notchy, be rough in some places, smooth in others.They are not even close to ABEC-9 precision bearings as claimed, and in fact, do not even fall on the scale at all being 195.257% out of spec.

Got the bearings on time and am using them. So far so good. All items are in good condition without defect.

okay for price

Bought these for my roller blades and my old dirty garbage bearings spin better than these do. Complete garbage! Dont waste your money

Good dealer. Good product