Finn,
A few us are / were using the bearing Steve identified. I had 34.5 hours on the new bearing when I sold the RV10. The bearing still look new.
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5MM needle cage assy bronze inner race / steel outer race 35mm AZK35525
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35mm
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52mm
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5mm
|
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7000 rpm
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My oil seal was leaking and replaced at the same time as the 5MM bearing. The leak was only detectable at idle. A small streak of oil was form below the seal. In flight the oil would blow everywhere making it impossible to located the source.
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350909
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Rear Oil Seal National Oil Seal
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Bobby – S21 kit has arrived.
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Thursday, February 25, 2021 12:46 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] RD-1C input shaft oil seal
So there's a bunch of posts of input shaft oil seal failures.
But what is the recommended oil seal?
I think I've traced my oil leak to that. (Tricky because found drops on
fittings near oil filter base after last flight. But after wrapping
paper towels around the fittings and doing a ground run-up, only traces
of oil is on the outside of them -- likely slung up from the input shaft).
On a different note. January last year I bought a “INA 81107TN
Cylindrical Roller Thrust Bearing, Polyamide Nylon Cage, Open End,
Metric, 35mm ID, 52mm OD, 12mm Width, 6500rpm Maximum Rotational Speed”
on Amazon for $18.40 to replace the input thrust bearings on my RV-3B.
(The stacked bearings are cutting a groove in the shaft.) Now the same
bearing set costs $135 and up. WTF! Did find SKF 81107TN on eBay for
$30.50. But dang! No inflation?
Finn
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