|
Thanks, yes I looked at that.
0.25" wide but should be OK. Also the
slighter less than 1.5" seal OD can be handled with RTV or other
sealant.
But look at this from SKF's web site:
| Limiting speed |
3 840 r/min |
| Maximum
operating temperature |
212 °F |
| Minimum
operating temperature |
-40 °F |
| Permissible
circumferential speed |
1 002 ft/min |
| Rotational
speed |
3 840 r/min |
Limited to 3,840 RPM?
Shaft circumference: 1"*Pi/12 feet.
1002/Pi*12 = 3,827 RPM.
This is for the input shaft where we
might see as high as 7.500 RPM (at least on the Renesis).
Doesn't mention max pressure but I've
seen 7 psi elsewhere. Shouldn't be a factor if well vented (big
PSRU oil return line and good engine "crankshaft" (oil pan) vent).
I'm increasing my PSRU main oil return
line to 1/2" NPT -- 3/4" ID hose and also cutting a small groove
in the mount plate behind the input shaft thrust bearing race to
allow oil that makes it to the seal to drain.
Finn
Fin: this is the PSRU “rear seal” that Dennis installed in the “C” model on my 7A w/Renesis in 2024ish.
Doug
Sent from my iPhone
--
Homepage: http://www.flyrotary.com/
Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html
|