Jump to content

ABEC scale

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by TheTrueChAoS (talk | contribs) at 15:48, 16 February 2007 (This is a page about ABEC bearing ratings not about skateboard bearings. It should be more general, perhaps another article could be made to strictly speak about skateboard bearings.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.


ABEC, stands for Annular Bearing Engineering Council, that standards defines tolerance (engineering) classes for major dimensions and characteristics of steel ball bearings. The ABEC scale of tolerance classes ranges from 1, 3, 5, 7 and 9. Higher numbers indicate closer conformance to certain critical bearing dimensions. Bearings manufactured within tighter tolerance ranges provide greater accuracy of shaft rotation and contribute to higher speed capability. However, the ABEC rating does not specify many other critical factors, including raceway uniformity, smoothness of the rolling contact surfaces, ball precision, and material quality.

ABEC Ratings

Bearings are rated on the Annular Bearing Engineering Council or ABEC scale. The higher the ABEC number, the greater the manufactured precision of the bearing. There are no required materials to meet the ABEC specifications. The bearings simply have to be made to a certain precision. ABEC ratings are 1, 3, 5, 7, and 9.

Most applications only require 1 or 3 ratings while some very high precision parts like machine spindles or mills will require 5, 7 or even 9 in ultra high precision.


References

Stub icon

This skateboarding-related article is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=ABEC_scale&oldid=108621160"