The idler is pretty beefy, but yeah, its possible.
Essentially a steel sleeve that is greased, with two smaller steel sleeves in side that, which have a gap in the middle for grease. The outer sleeve keeps the bolt from crushing the ends together too much when tightened. The inners allow the bolt to stay greased.
at the end that the center link attaches to, there are two sealed roller bearings. Easy to replace if they fail, just a snap ring. Its a nice unit.
Baby Beast 2- 1999 4Runner SR5
Baby Beast -1987 4Runner SR5-Gone, but not forgotten