I'm pulling the blower off to see if a welder can fix it
Is this in working condition?
Yes, buy the one from Steve.
While the shaft can most likely be repaired by welding, it would require disassembly of the blower. For one thing, welding in place would wreck the seals from the heat, and the shaft also needs to be turned on a lathe to true it up once welded, and then set up on a mill to recut the keyway. Here is a video that shows the work needed (on a much larger shaft):
If you get a replacement blower, and can find someone to disassemble and reassemble the old blower (I don't have the special tools needed), I would be happy to give the shaft repair a whirl. I have a lathe, mill to recut the keyway, and TIG welder. would do it for free, just as an interesting project, as long as you aren't in a huge hurry. But I think even if I do the shaft repair for free the cost to disassemble and reassemble the blower (setting the timing and clearances, new seals, etc. might be cost prohibitive just to have a spare blower on the shelf.
If you're in Gilbert then I'm just a little ways away in
Phoenix.
BTW, you should try to figure out the reason for the failure before sacrificing another blower. One thing that can be an issue is excessive overhung load on the shaft caused by positioning the sheave (pulley) too far outboard. The Sutorbilt manual calls for the sheave to be no further away from the blower case than 0.38" (about 3/8"). If the sheave is way out there coupled with excessive belt tension, you can end up with a broken shaft.
