Ultra Mini High performance, Bearing upgrade system, the revolutionary new ultralight skate bearing system.
Only NiNjAs are made in Japan at the world’s most advanced
bearing manufacturing facility using state of the art materials…
facility is an automated “clean room” for superior finishing and construction.
NiNjA Bearing engineers have customized the NiNjA Bearing line to excel for
Inline speed skating as well as skateboarding demands including unmatched speed
under skate-load, superior side-load speed/strength, and superior
weight-bearing impact shock-load capabilities.
NiNjA Bearings are fully “Skate
Tested” and “Performance Proven”. NiNjAs also surpass both ABEC and the more
stringent JIS ratings, which is very good. Not bad.
NiNjAs’ high carbon chrome
bearing steel raceways are purified, refined and finished like no other.
balls are super-hardened AKS balls, micro-finished to perfection w/ the
implementation of ultra finite “ball matching automation” for exactness to
eliminate wobble, minimize friction and maximize speed.
NiNjAs were the first to utilize (and have
always had) cutting edge labyrinth technology with the most effective labyrinth
cut and shield configuration for maximum protection of inner bearing parts from
outside elements while providing unmatched speed.
NiNjA’s shields also assist
w/ a cooler spin and far less heat build-up compared to rubber-coated shields….
less heat means less friction and less eventual internal structural
NiNjA bearings are easy to service without removing their
come in pack of 16 bearings only.