I have a air chisel and compressor and like that idea. I don't think I have a hammer end but I will check. I think I bought mine +25 years ago and have used it to break up concrete in small areas in the past.
Before I replace the bearings I want to check the pulley alignment again just to make sure that isn't causing the deck belt to jump off.
thanks for the idea..
Neither did I when I first tried it.
Ground the pointy bit to a big round end but it still would expand the shaft like peening over a rivet if I was not careful.
The hammer end is called a plenishing bit and I am sorry I did not buy one years ago as I use it lot when repairing decks.
I can virtually sit on it then turn it on so I am making 20,000 100kg blows a minute but they are only 1/2 " so you can really move metal around.
Thus oxy welds that I used to grind smooth I can now plenish smooth thus retaining the extra metal thickness and work hardening the weld thus stiffening the repair.
The idea of the preload is to stop the hammer causing balls to hammer into the races.
Also excellent for removing wheels that have rusted solid onto rear axels .
The axel is only held in by a circilp agains some alloy and it is really easy to wreck the housing.
We have a local brand ( Cox ) who fit cast alloy wheels onto a steel tapper with a locating key and prior to this SOP was to change the tyres on the mower.
Now I can pull them off every couple of years