Replacing a Staton friction roller is labor-intensive, especially the 1.375" and 1.5" rollers. The spindles are larger than the 1.375" bearing holes. The bearings must be pressed off the roller while still in the housing. If not there's no way to remove the spindle. Ya just can't get to the bearings to remove them.
It costs me over $100 and three days to replace a Staton roller. UPS shipping also kills me.
I'm considering this kit or Dimension Edge for my next project, mainly for ease of changing spindles. 5+hp, 1.25" friction roller, 40mph at 12,155rpm.