No experence with that sized track, but could a rock or something solid have gotten between the bogies and caused such damage as pictured ? I found a smaller rock in one of my bogies on my cat 247B skidsteer and felt it may have resulted in damage to the track,  if I wouldn't have found it when I did and I hadn't run it more then a few feet with it stuck in there. Luckily, I just stopped to stretch my legs and seen it there . . . . .