Author Topic: 394 crank bearings and seals, oem or aftermarket?  (Read 512 times)

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Offline alsled

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394 crank bearings and seals, oem or aftermarket?
« on: November 09, 2013, 08:11:14 pm »
Picked up a 394 and will be going through it top to bottom, What do you guys use for bearings and seals, oem, or can I get the same thing at a local place?  What is the part numbers for the bearings and seals, not husky numbers.

Thanks,

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Offline 660magnum

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Re: 394 crank bearings and seals, oem or aftermarket?
« Reply #1 on: November 09, 2013, 08:18:13 pm »
The bearings are a 6203 available most anywhere that sells bearings 40mm OD x 17mm ID x 12mm wide

http://northwoodsaw.com/store/index.php?l=product_detail&p=604
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Offline 660magnum

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Offline sharkey

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Re: 394 crank bearings and seals, oem or aftermarket?
« Reply #3 on: November 10, 2013, 02:38:38 am »
The big thing is not to use bearings that have the plastic cage. 

The part number for the latest 394 bearings are; Husqvarna 738220325 (replaces 503250002)
BALL BEARING 6203C3-QE6

The bearing part number is 6203, with a C3 clearance.   Timken, SKF or NTN
http://www.locateballbearings.com/TimkenBearings.html

Offline mdavlee .

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Re: 394 crank bearings and seals, oem or aftermarket?
« Reply #4 on: November 10, 2013, 07:55:54 am »
What's wrong with the plastic cage? That's what most OEM bearings are using now. The stihl 460 bearings I just installed had plastic cages.

Offline alsled

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Re: 394 crank bearings and seals, oem or aftermarket?
« Reply #5 on: November 10, 2013, 08:42:00 am »
The latest version of the oem bearing, is it open on both sides or does it have seals on it?

Offline 660magnum

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Re: 394 crank bearings and seals, oem or aftermarket?
« Reply #6 on: November 10, 2013, 09:06:35 am »
Most often, after market bearings will have seals which are easily popped-off with a small screw driver.
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Offline KilliansRedLeo

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Re: 394 crank bearings and seals, oem or aftermarket?
« Reply #7 on: November 10, 2013, 10:07:42 am »
I have used SKF 6203 C3 2RS (two sided rubber seals) and just popped out the seals as 660 mentioned, work fine and are usually cheaper than the open bearing for some reason. I have seen both the plastic and metal ball retainer fail. One might think that the plastic retainer would cause less damage when failure occurs but that is not the case IMHO, catastrophic bearing failure creates a mess of the case no matter what material is used in the retainer.

I have also used Nachi bearings with no problems in Husqvarna saws.
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Offline alsled

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Re: 394 crank bearings and seals, oem or aftermarket?
« Reply #8 on: November 10, 2013, 11:01:27 am »
Thanks, personally I have no Idea why any manufactuer would put bearings on a 2 stroke crank with seals on them, lack of oil!!   Ski Doo tried this on some snowmobile engines, they failed very rapidly.

Offline KilliansRedLeo

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Re: 394 crank bearings and seals, oem or aftermarket?
« Reply #9 on: November 10, 2013, 11:05:55 am »
Factory bearings are open both sides

Here is what the case splitter looks like there are more than 1 of these tools listed in the service tools catalog for different series of saws 394 uses the one that ends in 61-01. Also, you will need the crank assembly tool which pulls the crank into the case there are several of these also depending on saw model. The crank installation tool is 502 50 30-08 the same tool is used for 281/288.

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