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Thu, 25 Feb 2021 21:27:51 +0000 Received: by smtp414.mail.bf1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID ca656d193b07f6f02157faf7cfe89288; Thu, 25 Feb 2021 21:27:46 +0000 (UTC) Subject: Re: [FlyRotary] Re: RD-1C input shaft oil seal To: Rotary motors in aircraft References: Message-ID: <89dad3f1-4843-bbd7-b5e9-d62adfaf818e@verizon.net> Date: Thu, 25 Feb 2021 16:27:44 -0500 User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------2FC0CB3278410574E7942BAD" Content-Language: en-US X-Antivirus: Avast (VPS 210225-0, 02/25/2021), Outbound message X-Antivirus-Status: Clean X-Mailer: WebService/1.1.17828 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.aol Apache-HttpAsyncClient/4.1.4 (Java/11.0.9.1) Content-Length: 17236 This is a multi-part message in MIME format. --------------2FC0CB3278410574E7942BAD Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Thanks Bobby! When I Google *AZK35525*most pictures don't show any races. Not included? Any significant difference between the Timken and National 350909 seals? Finn On 2/25/2021 3:59 PM, Bobby Hughes BHughes@qnsinc.net wrote: > > 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. > > > > > 5MM needle cage assy  bronze inner race / steel outer race 35mm *AZK35525* > > > > 35mm > > > > 52mm > > > > 5mm > > > > ** > > > > *7000 rpm* > > 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. > > 350909 > > > > Rear Oil Seal  National Oil Seal > > 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 > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > > > *Disclaimer* > > The information contained in this communication from the sender is > confidential. It is intended solely for use by the recipient and > others authorized to receive it. If you are not the recipient, you are > hereby notified that any disclosure, copying, distribution or taking > action in relation of the contents of this information is strictly > prohibited and may be unlawful. > > This email has been scanned for viruses and malware, and may have been > automatically archived by *Mimecast Ltd*, an innovator in Software as > a Service (SaaS) for business. Providing a *safer* and *more useful* > place for your human generated data. Specializing in; Security, > archiving and compliance. To find out more Click Here > . > --------------2FC0CB3278410574E7942BAD Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit
Thanks Bobby!

When I Google AZK35525 most pictures don't show any races. Not included?

Any significant difference between the Timken and National 350909 seals?

Finn

On 2/25/2021 3:59 PM, Bobby Hughes BHughes@qnsinc.net wrote:

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.

 

5MM needle cage assy  bronze inner race / steel outer race 35mm    AZK35525

35mm

52mm

5mm

 

7000 rpm

 

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.

 

350909

Rear Oil Seal  National Oil Seal

 

 

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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This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.




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