Hello Appsy and Beech
The roll pins here must be the captive device.
Removing it should free the bracket from roller shaft.

In the day, a spray lubricant and a soft mallet would do the trick.
Plan B would be a puller or localised flame, combined
with Plan A.

Beech has a good diagnostic approach I think.
But, because a roll pin is used, it makes no engineering sense
that the roller shaft would be peened to a larger diameter.

The roller shaft does not spin.
The stubborn end bracket has no bearing. It's a tolerance sleeve
that has become corroded over time - best guess.

[Linked Image]

Hope this helps.

Jack