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+--- Thread: Fixing a Leaky RF-45 Mill Head - Enco (/thread-157.html)
RE: Fixing a Leaky RF-45 Mill Head - EdK - 04-29-2012
The subject of proper orientation came up and is good one. Based on what Mayhem said I think this is the way they should be oriented. (See image below.) Please correct me if I'm wrong.
That bottom section of that gear assembly is what the seals are running on. You can see the wear marks from the old seals. The only point where oil has access to get by the seals is the joint between the upper seal and the gear assembly collar, for lack of a better word, that the upper seal rides against. Why would two seals be required?
Thanks,
Ed
[attachment=943]
RE: Fixing a Leaky RF-45 Mill Head - EdK - 04-29-2012
Based on this picture from a seal manufacturer's web site, the orientation in my image is correct.
Ed
[attachment=944]
RE: Fixing a Leaky RF-45 Mill Head - DaveH - 04-29-2012
Ed,
In terms of the dual seal I think just a back up in case one fails.
I have seen two seals used where the seals are packed with grease prior to installation the second seal helps to retain the grease for lubrication.
If the seals run without lubrication they die
DaveH
RE: Fixing a Leaky RF-45 Mill Head - ETC57 - 04-29-2012
(04-29-2012, 10:35 AM)f350ca Wrote: He didn't ask how we (self included) put in seals, he asked how to do it properly.
Greg
But Greg, I always thought installed with no damage was a proper install.
Jerry.
and yes Mayhem my set goes up to 3 1/2", so I do have some rather large sockets.
.
RE: Fixing a Leaky RF-45 Mill Head - ETC57 - 04-29-2012
(04-29-2012, 12:21 PM)DaveH Wrote: Ed,
In terms of the dual seal I think just a back up in case one fails.
I have seen two seals used where the seals are packed with grease prior to installation the second seal helps to retain the grease for lubrication.
If the seals run without lubrication they die
DaveH
That was my thought Dave,
It is meant to act as sort of a packing filled with grease. Bear in mind Ed this is just a guess, I know nothing about your mill.
Jerry.
RE: Fixing a Leaky RF-45 Mill Head - DaveH - 04-29-2012
DaveH
RE: Fixing a Leaky RF-45 Mill Head - doubleboost - 04-29-2012
I have a good selection of old bearing races at work for fitting seals
I must admit i also have a good selection of socketts
John
RE: Fixing a Leaky RF-45 Mill Head - EdK - 04-29-2012
The OD of the seal is 45mm so I'm going to need to make a custom tool to seat the seals.
Ed
RE: Fixing a Leaky RF-45 Mill Head - doubleboost - 04-29-2012
Hi
Ed
As long as it will clear the bore the seal fits in and has a nice smoth end a simple piece of tube will do
A machined tube with a depth stop would be even better
John
RE: Fixing a Leaky RF-45 Mill Head - EdK - 04-29-2012
John,
A piece of tube would have been my preference but I don't have any tube near that size so I made this to press the seal in.
Ed
[attachment=946]