Cracked bearing
Thread Starter
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Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
I went with the baker bearing this past spring. About 4000 miles, bearing is fine, seal is starting to weep (it's primary oil, not tranny oil).
It's a 6205 bearing with the inner diameter of the race honed out a little (brake cylinder hone) to slip on the shaft. I can't remember the shaft diameter dimension. It's a single row ball bearing. 25 x 52 x 15 mm in size
The All ***** is a 5205 double row ball bearing with the inner honed out slightly to slip on shaft also. It is 25 x 52 x 20.6 mm in size.
The all ***** seal is a 1.125 x 1.781 x .31 (inches) or 25 x 52 x 8 (mm)
The baker bearing uses both snap rings in the primary like the stock IPB bearing, the all ***** only uses the snap ring in the primary that is closest to the transmission, it does not use the inner snap ring that is closest to the clutch. The all ***** bearing is wider so the clutch side snap ring can't be used.
I'm going to give the 5205 a try this winter when I replace the weeping seal and some other transmission parts.
I think the old shovel heads (or maybe earlier) used the 6205 slip on bearing before they came out with the press on inner primary race style. YD
It's a 6205 bearing with the inner diameter of the race honed out a little (brake cylinder hone) to slip on the shaft. I can't remember the shaft diameter dimension. It's a single row ball bearing. 25 x 52 x 15 mm in size
The All ***** is a 5205 double row ball bearing with the inner honed out slightly to slip on shaft also. It is 25 x 52 x 20.6 mm in size.
The all ***** seal is a 1.125 x 1.781 x .31 (inches) or 25 x 52 x 8 (mm)
The baker bearing uses both snap rings in the primary like the stock IPB bearing, the all ***** only uses the snap ring in the primary that is closest to the transmission, it does not use the inner snap ring that is closest to the clutch. The all ***** bearing is wider so the clutch side snap ring can't be used.
I'm going to give the 5205 a try this winter when I replace the weeping seal and some other transmission parts.
I think the old shovel heads (or maybe earlier) used the 6205 slip on bearing before they came out with the press on inner primary race style. YD
Seasoned HDF Member
Joined: May 2008
Posts: 21,173
Likes: 12,740
From: South Carolina
I don`t think the washer riding against the bearing would cause a crack.
I`m thinking somebody froze that bearing and tapped it into the case (in the jet engine world, we never freeze a bearing, but we do heat the support that the bearing fits into, in this case the primary case could be heated to make it easier to install the bearing).
I`m thinking somebody froze that bearing and tapped it into the case (in the jet engine world, we never freeze a bearing, but we do heat the support that the bearing fits into, in this case the primary case could be heated to make it easier to install the bearing).
Club Member
Joined: Mar 2009
Posts: 66,125
Likes: 51,441
From: Niles Canyon Ca.
I'm seeing a misalignment radial loading failure with that bearing, washer digging in was a result not the cause. Question is why and how now, severe sudden shock will do it, somebody beat it in with a punch,this could crack or misalign it in the bore, mainshaft has a wahoo but there'd been big vibration with that one, lastely castings are out somehow. Or just maybe a bad bearing, not common but does pop up occasionally.
Thread Starter
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Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
This old bearing was installed by me four years ago, no freezing or heating anything, simple press fit. But it is gouged up from the washer real bad and discoloration from heat.
Tourer
Joined: Sep 2017
Posts: 280
Likes: 96
From: DFW Texas
One guess is that the rubbing may have heated one side of the race more than the other and it built up stresses until a crack formed, and then the rest of the story. No proof, just a thought.
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Club Member
Joined: Mar 2009
Posts: 66,125
Likes: 51,441
From: Niles Canyon Ca.
Memory serves me there were two variations of that reinforcing washer but off hand can't remember what the differences were, think I still have a couple in my stuff somewhere.
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Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
do you know if that washer should be a snug fit when it goes back on