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Old 03-24-2017, 04:03 PM   #1
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LN Eng IMS Bearing Question

Evening Guys

I'm considering purchasing the LN Engineering IMS retro fit single row bearing.

My question is I don't see how it keeps the oil in?

On the factory IMS it has an "O" ring on the center stem which the flange goes over
to keep the oil in.
This makes sense to me.

But I don't see how the LN bearing achieves this.

I look at pictures on line and it does not show how it does this.

Does it have a groove cut on the inside on the flange (for an "O" ring) where it slides
over the center stem? (in reverse of the OEM system)

I just like to know how things work before I drop a bunch of cash.

Thanks
Bart

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Old 03-24-2017, 04:30 PM   #2
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Originally Posted by Muskoka Minute View Post
Evening Guys

I'm considering purchasing the LN Engineering IMS retro fit single row bearing.

My question is I don't see how it keeps the oil in?

On the factory IMS it has an "O" ring on the center stem which the flange goes over
to keep the oil in.
This makes sense to me.

But I don't see how the LN bearing achieves this.

I look at pictures on line and it does not show how it does this.

Does it have a groove cut on the inside on the flange (for an "O" ring) where it slides
over the center stem? (in reverse of the OEM system)

I just like to know how things work before I drop a bunch of cash.

Thanks
Bart
The LN bearing uses an o=ring on the center bolt, but no undercut as that was a weakness in the factory bolt that led to many failures:



And the design does work, we have not had one leak yet.
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Old 03-24-2017, 07:08 PM   #3
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So where does the "O" ring sit?
Between the flange and the bottom of the stem?
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Old 03-25-2017, 07:16 AM   #4
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OK I figured it out.

Where the flange sits at the bottom of the stem it has a chamfer cut into it where the "O" ring site.

Now that makes sense..

Cheers!
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Old 03-25-2017, 10:52 AM   #5
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Originally Posted by Muskoka Minute View Post
OK I figured it out.

Where the flange sits at the bottom of the stem it has a chamfer cut into it where the "O" ring site.

Now that makes sense..

Cheers!
Correct. The factory center bolt tend to snap right at the under cut for the O-ring, so LN used a larger bolt without the grove to prevent that.
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Old 03-25-2017, 11:28 AM   #6
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Originally Posted by Muskoka Minute View Post
OK I figured it out.

Where the flange sits at the bottom of the stem it has a chamfer cut into it where the "O" ring site.

Now that makes sense..

Cheers!
There is also an o-ring in the i.d. of the flange bore which seals on the stem of the IMS center bolt.

Our design has dual seals.

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