Brad - Looks like the bearing locking collar hit the spring. The bearing was either in the wrong location on the crank or the collar came off the bearing. That all I can think would cause it.
Roger- The Q throwers were made by IH CC and the H throwers were made by Haban for IH, both are considered OEM products. I own one of each QA-36A and H-48. Overall I like the H series better, mainly because of the drive train has more “off the shelf” parts in it. The Q chain tensioning is good, but specialized and expensive to replace. The H gear box is more durable for heavy loads because of its design. The Q gear box is not weak by any means, just not the same design as the H. Haban is out of business, so no OEM parts are available for the H series and the Q series is getting there. If you had to do a complete rebuild on each one, the H would be less costly due to being simpler (less parts) and more common parts. The H auger is easier to rebuild over all than some Q’s. The QA-xxA series has a welded drive sprocket, hard to remove/replace, same goes for the auger bearing shafts.
JMO
Jim