Sachs main bearings

[imported_n/a]

I went down to my local bearing house today to order bearings for a Sachs engine.  My parts book calls for M20 DIN 615 mains.  Well, the M20 that I was shown had plastic cages for the balls to ride in.  I was of the understanding that the cages should be steel or brass.  Is the use of plastic an improvement on the old bearings or a disaster waiting for a place to happen?  Any feedback would be appreciated.

Glenn



 

[Don Roth]

Glen..
My OEM  bearings (125/B6) have the same
plastic cage of which you speak, I assume
that they are better, but you know what happens when you assume......

 

[Doug Wilford]

You are fortunate your bearing house had the bearings.   The plastic cage is fine the balls won't know the difference.  The bearing company knows this is what they call a magneto bearing and everything will be okay.

 

[imported_n/a]

Don and Doug, thank you very much for your help.  POG rules!!

 

[imported_n/a]

In thinking about it, is the M20 Sachs main bearing the same or interchangable with the M20R40/55SV6 that is specified for the small-journal Jackpiner main bearings?  My bearing house couldn't find the latter bearing in their catalogs.


 

[Doug Wilford]

Really don't know about interchanging those bearings, the book calls the 175 a shouldered bearing..  I think you need someone who can decifer those other numbers.  or compare the two to see where the differences are.

 

[imported_n/a]

Thanks, Doug.  I'll do some more homework.

Glenn