"Wheel bearing maintenance is of vital importance, since poorly serviced bearings can bring your bike to a crawl, or even worse, they have the potential to completely lock-up a wheel and cause injury." [...]
"The sealed double-row ball bearing (on the right) is what Harley uses for wheel bearings at the present time. It replaced the tapered roller bearing used on the left side of the frame and needs no service during its life span of approximately 100,000 miles. It is also double-sealed to resist pressure washing and keep out dirt."
Fonte:
www.baggersmag.com
