Heat resistance.
George
Here's the skinny:
LIGHTER. The ceramic ball is lighter then the steel ball. This means that
the ball exerts less force outward against the outer race grove as the bearing
spins. This reduction in outward force reduces the friction and rolling resistance.
The lighter ball allows the bearing to rev up faster, and uses less energy
to maintain it speed.
HARDER. The ceramic ball is harder then the steel ball. This gives you a
bearing that will last up to 10 times longer then the steel ball bearing
because it holds it's finish better.
SMOOTHER. The ceramic ball has smoother surface properties then the
steel ball. This means
less friction between the ball and bearing races giving you a faster spinning
bearing.
THERMAL. The ceramic ball has better thermal properties then the steel
ball. The ceramic ball will not heat up like a steel ball. This helps avoid heat
build up in the bearing, a primary culprit in skate and skateboard bearing
performance degradation.
LUBRICATION. The ceramic balls are impervious to oxidation, chemicals,
and require essentially no lubricant. The bearings are lubricated with a
very, very small amount of Aral Aralub oil, not a gel or grease.
Last edited by biker7; 05-04-05 at 03:18 PM.