You got that right! These are composite and are in nice shape but the bearings are junk. After much thinking I am leaning towards cutting the blade mount from the shaft and removing the shaft and composite sprocket Assy. upwards through the mandrel. I can then attempt to remove the sprocket in a much safer manner in a press with a jig to press on the sprocket near the shaft. I figure welding the blade mount back on square with the shaft can be done for much less than replacement cost of the sprockets or even fab a keyed hub that bolts to the end of the shaft to facilitate future removal!
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