Rebuilding Jacobsen 626, needle bearing numbers 343470
I'm going through a Jacobsen 626 Mod.52638 I found the pinion and sprocket assembly rocking on it's shaft and had dug into the shaft badly. Tracking down the bearing that should go in there was a chore but should someone else need them here you go. The needle bearings are part number 343470 or JA343470. They cross over to MTD P/N 941-0349 which is what I ordered. What I received was a SCE1011-P which is also a BP1011.
Likely used on MTDs as well.
They are readily available and you should be able to find them for under $10 each on Amazon, Ebay or a bearing supplier.
They do have a SEAL AT ONE END
. You need to pay attention as once you press or carefully pound them in you don't want to have to try and remove them to get the seals facing outward.
I measured the bearing and the OD is .813, I used a metric socket that was a bit smaller and it worked great for pounding the broken shells out. They are a tight fit and you need to hit it pretty hard to get them out.
Someone destroyed the bearings before me and tried to use a bushing in there. Might have been ok if they greased it but it was a half way measure and the cause of the damage to the shaft that I had to fabricate new for the gear cluster to ride on.
In the photo below you can see the green seal lip on the top bearing and inside the end of the first bearing and the start of the second. Would like to add a way to grease it but there isn't room between the two bearings.
Make sure the windows are up before the snow plow goes by !!
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Last edited by Kiss4aFrog; 05-01-2014 at 09:22 PM.