The higher this number is the tighter the tolerance of the bearing and the better the degree of precision of the bearing.
Ceramic bearings vs abec 9.
Abec and other rated bearings.
With its abec 9 rating one can instantly confirm that the mini skater precision 608 zz bearings are among the most precise skateboard bearings available in the market at present.
True abec 9 bearings are intended for critical applications such as nasa would require and are expensive.
Combine that with some lubrication you will enjoy your smooth rides and top speed without a doubt.
Abec ratings annual bearing engineers committee 1 3 5 7 and 9 were meant to provide a good better best sort of metric but chuck panaccione from enduro bearings says this.
However a skateboard with 54mm wheels turning 20 000 rpm will be traveling.
Back in the 80 s they had to sort bearing lots to get the abec 3 and abec 7 bearings.
The bearings are abec 9 rating which meets the top precision you could have asked for.
Abec 9 synopsis ceramics will provide you with the ultimate in smoothness and bearing performance.
There s a lot of mislabeling and misinformation in the bearing market.
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The best skateboard bearings.
Abec only grades tolerances not materials hardness or smoothness of components.
It makes use of chrome steel material which is a big advantage as it is known to be not only durable but also resistant to possible deformities caused by heavy loads.
In an application like this an abec 7 or 9 bearing rating may be appropriate.
The abec tolerance does cover out of roundness and for this reason i would use abec 3 or better.
German engineered inner outer races along with a new and more advanced black ball ceramic formula provides you with a lighter smoother and faster ride far superior to any other bearings on the market.
In addition the bearings are also very quiet when rolling in many types of wheels.
Abec 9 and higher bearings would be ridiculous to use in a skateboard unless you are doing downhill luge style skating or something else where your goal is to go insanely fast.
If you aren t spending a fortune on these bearings then don t trust that they are in fact abec 9.
The abec is the dimentional tolerances.