Bearing came loose when cutting less than 200 linear feet of use. Very straight cut. I was very happy with the performance. Then there was a small jump and a catch in the last round of three. After switching back on, the cut seems to be easy. Then I noticed that the camp was gone. The bay below was no longer smooth. Not only did the cut move horizontally, but a small edge of the shaft (the stop where the bearing rests?) also interfered with the work. Very disappointed, this shouldn't have happened.