Swing arm bearings are tapered roller bearings. That one isn't.
Yeah, I knew that, I was looking for tapered roller bearings that size but didn't find any 17X40X17 -- I posted that bearing without looking at what it really is.
I didn't see any tapered roller bearings that size, but I think I'm going to do what kaopono says below -- I don't see those bearings failing and I have a spare if it does.
It came up because I ran into a guy with 300,000 miles on his Suzuki tourer and he said he puts new swingarm bearings in every major service interval. Maybe it's just got crappy bearings.