Originally Posted by Dragonhawk ficht
The flat side should always face out, which should stop dirt entering the rollers.
forgot to mention, greese should then be applied to the recessed bit, which face the rollers, to help dissipate heat build up.
OK, thanks a lot! I really recommend to keep also the super hub seal in good condition....don't ask me why...I am lucky that i heard some noise from the bearings when manually moved the
trailer, most likely would have lost a wheel if went driving in that condition. Nothing left of the bearing, falling apart when removing the hub. Looks like grease went out and crap went in....