Green bearings and inner axle seals

[Oldgearhead]

Do you need the inner axle seal if you are running green bearings

 

[velocityss1985]

Absolutely, if not the gear oil will wash out the grease of the sealed green bearing.

 

[4mulas]

You actually don’t need them. The green bearing is completely sealed.

I have read once from a user where the inner seal interfered with the fit of the axle when using a green bearing but can’t verify the authenticity of the complaint. (Can’t remember his exact application either)

If the seals don’t interfere with anything it won’t hurt to leave them in.

 

[Vitamin_A12]

Absolutely, if not the gear oil will wash out the grease of the sealed green bearing.

Not picking on you but that’s a funny statement. Though I am not a fan of using green bearings, if they are sealed, how does the gear oil get inside to wash out the bearings?

 

[RJ Squirrel]

Not needed, the green bearing is sealed, and also has an O-ring around it that seals it to the axle housing. There is no need to remove the old axle seals, I leave them in.

 

[matthon]

I replaced the seals and add some grease to the o-ring on the bearing.
Just some extra insurance, doesn't hurt.

 

[Bird 426]

I'll leave mine in.

 

[RemCharger]

The one hundred percent preference would be to leave the seals in. You would only risk not running them if you were stuck on an island and had zero choice because there aren't any.
The lock collar would interfere with the seal , not the bearing. ..and it doesn't.

 

[69L48Z27]

I just did an 8.75 with green bearings for the first time. I installed the seals and confirmed no interference. Collar is not in contact as @RemCharger mentioned. Also doesn’t ‘sealed bearing’ just means it’s not serviced externally with grease? I don’t think a sealed bearing is intended to be a seal itself? I can see where it would possibly work that way, installing the seals for a couple $$ might be good insurance.

 

[matthon]

I don’t think a sealed bearing is intended to be a seal itself?

It has an o-ring, my guess is it's intended to seal the gear oil in, and anything out.

 

[RemCharger]

It's intended to be a last resort if the installer completely failed to put an inner seal in.

 

[kiwigtx]

It's moments like these that I miss Bob.

 

[RemCharger]

It's moments like these that I miss Bob.

The funny thing is, he always said the original is better. And nobody argued that point.

 

[kiwigtx]

The funny thing is, he always said the original is better. And nobody argued that point.

Bob would have enjoyed this thread..... just my opinion though.

 

[khryslerkid]

Dr Diff sent inner seals with my axles equipped with Green Bearings.

 

[69L48Z27]

It has an o-ring, my guess is it's intended to seal the gear oil in, and anything out.

View attachment 1954037

Yep, saw that O-ring. Wasn’t sure if the housing was machined to really allow for fluid sealing of if it was more of a way to center the bearing.