How much grease in the hub ?

[RichardHyde]

Quick question...

Having cleaned up the front hubs and removed all of the old grease and muck, how much fresh grease should there be in the hub ?

Thanks, Richard

[Carledo]

Quick question...

Having cleaned up the front hubs and removed all of the old grease and muck, how much fresh grease should there be in the hub ?

Thanks, Richard

A difficult one this, there's no stated amount, it's pretty much a judgement call.

I go about halfway between a thin coat and packed solid, it's worked for me all these years!

Having new grease of a decent spec is probably more important than the exact amount!

Steve

[tamtrucks]

if your using new bearings or even old good useable ones,spend time on getting grease in the bearing itself! pack the bearing thoroughly...main thing is the bearing not the hub

[cliftyhanger]

Indeed, the hubs don't need grease, the bearings do.
But as above, packing teh bearings is the important bit. I don't think grease escapes (unless you seriously overheat the brakes, seen that going down Stelvio with an Auto Stag, pretty scary. Lost most of the brakes) But I a,ways chicken out and have a ring of grease behind the bearings.

[Richard the old one]

I suggest you have a read of the advice provided on the SKF bearing site. Below is an extract from the site

Initial grease fill
Super-precision bearings operating at high speeds should have less than 30% of the free space in the bearings filled with grease.
Open angular contact thrust ball bearings for screw drives should be lubricated with a grease quantity that fills ~ 25 to 35% of the free space in the bearing.

Freshly greased bearings should be operated at low speeds during the running-in period (→ Running-in of grease lubricated bearings.) This enables excess grease to be displaced and the remainder to be evenly distributed within the bearing. If this running-in phase is neglected, there is a risk that temperature peaks can lead to premature bearing failure.

[tamtrucks]

in that case,,,do what SKF say