Bearing filter

[nuz69]

The front bearing is dustproof anyway, althought we can see a lot of dirt, the dirt don't really get in the bearing itself, so I think that what you doing is not necessary ^^
Anyway, if you try to lubricate your bearing, this will reduce a lot its life time, because with liquid you will force the dust to go inside the bearing. Only water and oil can kill a sealed bearing.