29-11-2018, 12:14 AM
Damian
Just to try and clear up some of what may be confusing terminology and explanations in the posts so far.
The "inner hub" is actually properly called the felt housing.
The washer is dished around part of its inner radius so that it sticks out towards the felt seal and will not touch the inner race of the bearing so it is free to rotate with the felt housing and outer bearing race.
The outer radius of the washer is trapped between the bearing outer race and the felt housing. If the washer is left out then the gap between outer race and felt housing would allow the hub outer, outer race and half shaft to move towards and away from the axle banjo direction (end float of the whole hub assembly)
It is probably difficult to see from that picture that the bearing inner race has a nut which tightens up against the front face of the inner race and pushes it back so that the rear face goes up against a shoulder on the axle case so holding it firmly in place against the axle casing.
The (outer) hub is held tight on the half-shaft taper and has screws which pull the felt housing (which is free to rotate independent of the axle casing) tight against the hub. The bearing sits half in the felt housing and half in the hub.
the only connection between inner and outer races are the balls of the bearing.
With the washer missing there is a gap between outer race and the felt housing; since the inner race is firmly held against the axle casing it will not move, but the half-shaft/hub/felt housing assembly can move in and out by the amount of the thickness of the missing washer such that with the inner race held tight and the outer race held in place via the balls the outer circumference of the outer race will slide in the housings of the hub and felt carrier (end float).
The outer race should be a good press fit in the hub and felt housing, so, as in one of the examples above with the washer missing it may not be obvious at first that there is anything wrong..........however this WILL lead in the end to rapid wear of the felt housing and hub as they slide in and out over the outer race so that the bearing becomes a sloppy fit in them resulting in ruined felt housing, hub and wobbly wheels.
There should be no reason why a correctly machined hub and felt housing with correct washer would not fit together clamping the correct bearing in place.
GK5268 is making matters worse by not having the washer (which must be the dished type) in place.....perhaps he has the wrong too thick felts which will not compress sufficiently?? But eventually those nice new hubs and the felt carriers will be prematurely ruined. Without the washer there is NO clamping of the hub/felt housing and outer bearing race
Where it is found that the felt carrier and hub housings are a bit worn so the outer bearing race is not an easy press fit but a loose fit then one of the LOCTITE bearing fit fluids can be used.....but do check up on which one to use as there are several to chose from according to how much wear there is.
Dennis
Just to try and clear up some of what may be confusing terminology and explanations in the posts so far.
The "inner hub" is actually properly called the felt housing.
The washer is dished around part of its inner radius so that it sticks out towards the felt seal and will not touch the inner race of the bearing so it is free to rotate with the felt housing and outer bearing race.
The outer radius of the washer is trapped between the bearing outer race and the felt housing. If the washer is left out then the gap between outer race and felt housing would allow the hub outer, outer race and half shaft to move towards and away from the axle banjo direction (end float of the whole hub assembly)
It is probably difficult to see from that picture that the bearing inner race has a nut which tightens up against the front face of the inner race and pushes it back so that the rear face goes up against a shoulder on the axle case so holding it firmly in place against the axle casing.
The (outer) hub is held tight on the half-shaft taper and has screws which pull the felt housing (which is free to rotate independent of the axle casing) tight against the hub. The bearing sits half in the felt housing and half in the hub.
the only connection between inner and outer races are the balls of the bearing.
With the washer missing there is a gap between outer race and the felt housing; since the inner race is firmly held against the axle casing it will not move, but the half-shaft/hub/felt housing assembly can move in and out by the amount of the thickness of the missing washer such that with the inner race held tight and the outer race held in place via the balls the outer circumference of the outer race will slide in the housings of the hub and felt carrier (end float).
The outer race should be a good press fit in the hub and felt housing, so, as in one of the examples above with the washer missing it may not be obvious at first that there is anything wrong..........however this WILL lead in the end to rapid wear of the felt housing and hub as they slide in and out over the outer race so that the bearing becomes a sloppy fit in them resulting in ruined felt housing, hub and wobbly wheels.
There should be no reason why a correctly machined hub and felt housing with correct washer would not fit together clamping the correct bearing in place.
GK5268 is making matters worse by not having the washer (which must be the dished type) in place.....perhaps he has the wrong too thick felts which will not compress sufficiently?? But eventually those nice new hubs and the felt carriers will be prematurely ruined. Without the washer there is NO clamping of the hub/felt housing and outer bearing race
Where it is found that the felt carrier and hub housings are a bit worn so the outer bearing race is not an easy press fit but a loose fit then one of the LOCTITE bearing fit fluids can be used.....but do check up on which one to use as there are several to chose from according to how much wear there is.
Dennis