There is indeed a 3/4, 25mm(0.9750) and 1" axles. However all the bearings are a little over 3/4 wide and very close to the same OD. They are also all double row bearings due to the inner diameter/outside diameter ratio but also the fact of the side load. Same as the sealed wheel bearings of newer cars that no longer have tapered wheel bearings this is how the side thrust is handled and also no longer require maintenance. However one good power washing or someone putting 250 lbs of torque on the axle nut and the bearing will soon be trash. Sounds like since your seal was displaced, someone did a power washing on it. The rubber seal is easily rolled out with a small rounded flat screwdriver

 

Double row Harley bearing 9247 (20mm width ) through 2007

Single Row Harley bearing 9276 ( 15 mm width ) 2008 to present

 

don't get me started......

 

You CAN use a power washer on these bikes.... You just have to be smarter than the power washer!

 

this wasn't caused buy a power washer . because no one but me washed it and i used a sponge ... the tech that repaired it confided that they had replaced a lot of defective bearing recently .

 

I power wash my bike regularly.....There are things you don't "blast"....... wheel bearing areas, dashboard switches, etc. The overspray is sufficient for those areas.

I've been caught in rainstorms that get those areas wetter than I get them when I wash the bike.

Grasshopper guts are resilient as hell and washing the bike between the downtubes and the lower fairings etc.....power washer is a godsend

~Joe


~Joe

 

And let's not forget S100 a lot of people use that stuff to clean their bikes...If not properly rinsed that is some corrosive stuff...I would not doubt that that is the cause of some bearing failures...Metric bikes used sealed bearings long before Harley ever thought about using them ...and we rarely replaced wheel bearings on them.

 

Power washing will not hurt a bike at all. Jeezzee you guys. I fly airplanes and I go 500 plus MPH thru rain ice and snow. Never had a flap or wheel bearing go..

Back on the farm we power washed ALL our equipment. Combines are nothing but bearings....

Hell my local dealership has an automated bike wash that works like a car wash. Always a line of bike to get thru it....Run thru it many times with no problems

 

I give up. Never argue with a pilot. I do a lot of flying. Glad they don't work on the planes. A power washer will roll the rubber lip seal of the the bearing up if not completely out. I can roll it up with my fingernail. I was not saying Baust did that but in his first post he says he got the bike this spring. Assumed someone had did the damage before he got the bike. I am not referring to a power car wash. I was referring to a power washer you clean siding and treated decks. My power washer will cut a 1/32 gouge in treated yellow pine if you're not careful.

 

I don't know about your bike, but when I replaced the rear tire on my 2010 RK, I checked the bearings. They are double row sealed ball bearings. And with 17K miles on the bike, they still felt like new.