Never seen the ..innards.. of an NH baler. Per the attached diagram it looks like you may be dealing with a common self aligned pillow block bearing and the Allen head screw is securing the eccentric locking collar. Placing a small punch in the hex hole an giving it a few smart taps can help loosen them. Also if can access the side of the area the Allen threads into and again with a punch smack it a bit more properly this can help, see photo. Even though this seem counter productive to smash the area, the blows are for a millisecond egg shaping the threaded hole helping to loosen the bonds of the threads. If in fact it is an eccentric lock collar hopefully you know it needs to be driven to rotate it to unlock it from the shaft and bearing. Usually needs to be driven in the opposite way of the direction the inner race rotates. If your baler pressing stroke occurs as most do on the bottom half of the crank stroke the lock should drive clockwise to release.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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