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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › tt39 front bearing
11-01-2004 10:04 PM  13 years agoPost 1
B.Hofferth

rrApprentice

walkerton in.

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it seems to me that someone a while ago said that boca bearing or some bearing supplier had a front bearing that was "O" ringed for extra sealing. if someone knows if this is true, or knows what the bearing part #'s are for it it would be greately appreciated! thanks.

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11-02-2004 06:19 AM  13 years agoPost 2
TMoore

rrMaster

Cookeville, TN

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Call them up, Boca has a toll free #. They are really nice guys down there.

That's what I did.

TM

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11-02-2004 10:05 AM  13 years agoPost 3
garry keogh

rrApprentice

Wicklow, Ireland

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Look for the suffix ****.RS
The suffix ".rs" on a bearing code indicates rubber seal. Similarly ".2rs" indicates that it has 2 rubber seals, one on each side of the bearing. Look for the bearing with this suffix in Boca or any other good bearing supplier. I have a TT39 which spews out oil from the front bearing. Next time it comes out of the heli, it's getting a sealed bearing.
FYI, the seal is fitted to the outer ring and seals IN the lubricant by touching the inner ring of the bearing. It stands to reason that if you have a bearing with one seal, put in the bearing with the seal facing out of the engine to keep the lube in.
If you can only source a bearing with two seals, use a pin to get under the inner edge of the seal one one side and prize it out carefully. Having said that, there is very little holding the seals into small bearings, so you will not have much trouble.

Good luck

Garry

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