In order to keep your motor in top running condition, you need a good
set of bearings. Occasionally, after a crash or landing in the dirt,
the bearings can become damaged and need to be replaced. The Scorpion
HK-40mm Motor Bearing Kit includes a pair of original equipment
replacement bearings to fit the Scorpion HK-4025 and HK-4035 Series
These bearings measure 16mm OD x 8mm ID x 5mm thick, and are an exact
replacement for the stock bearings that come with the motors.
Please note, The bearings are an exact fit into the motor housings,
so they do fit snugly. When removing the old bearings, you may need to
gently tap them out. However, when installing the new bearings, do not
tap them in with anything, as this can dent the ball races and ruin the
bearings. When installing ball bearings they need to be pressed in by
the outer part of the race. Never apply pressure to the inner race, as
this can damage the bearing and lead to premature failure.